FPUS55 KCYS 180738 ZFPCYS Zone Forecast Product for Southeast Wyoming and Western Nebraska Panhandle National Weather Service Cheyenne WY 137 AM MDT Mon May 18 2026 WYZ118-181500- Central Laramie County- Including the city of Cheyenne 137 AM MDT Mon May 18 2026 ...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY MORNING... .REST OF TONIGHT...Rain and snow showers. Snow accumulation around an inch. Colder with lows around 30. Northeast winds around 15 mph with gusts up to 25 mph. Chance of precipitation near 100 percent. .MONDAY...Snow showers. Rain showers in the morning, then a slight chance of rain showers and thunderstorms in the afternoon. Additional snow accumulation of 1 to 3 inches. Total snow accumulation 1 to 5 inches. Much cooler. Near steady temperature in the lower 30s. Northeast winds 15 to 20 mph with gusts up to 30 mph. Chance of precipitation near 100 percent. .MONDAY NIGHT...Mostly cloudy. A chance of snow showers in the evening. Widespread frost after midnight. Little or no additional snow accumulation. Cold with lows in the mid 20s. North winds 15 to 20 mph with gusts up to 30 mph, becoming northwest 5 to 10 mph with gusts up to 20 mph after midnight. Chance of snow 50 percent. .TUESDAY...Widespread frost in the morning. Mostly sunny. Not as cool with highs in the mid 40s. West winds 5 to 10 mph. .TUESDAY NIGHT...Mostly cloudy. Cold with lows in the lower 30s. South winds 10 to 15 mph. .WEDNESDAY...Partly sunny. A chance of rain showers in the afternoon. Not as cool with highs in the upper 50s. Chance of rain 40 percent. .WEDNESDAY NIGHT...Partly cloudy. Lows in the mid 30s. .THURSDAY...Partly sunny. A chance of rain showers and thunderstorms in the afternoon. Highs in the lower 60s. Chance of rain 50 percent. .THURSDAY NIGHT...Mostly cloudy. A chance of showers in the evening. Lows in the mid 30s. Chance of rain 50 percent. .FRIDAY...Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the mid 60s. Chance of rain 30 percent. .FRIDAY NIGHT...Partly cloudy. Lows in the upper 30s. .SATURDAY...Sunny. Highs in the lower 70s. .SATURDAY NIGHT...Partly cloudy. Lows in the mid 40s. .SUNDAY...Sunny. Highs in the upper 70s. $$ WYZ115-181500- Laramie Valley- Including the cities of Bosler and Laramie 137 AM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... ...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY MORNING... .REST OF TONIGHT...Snow showers, rain showers with a slight chance of thunderstorms. Snow accumulation of 1 to 3 inches. Colder. Near steady temperature in the lower 30s. East winds 15 to 20 mph with gusts up to 35 mph. Chance of precipitation near 100 percent. .MONDAY...Snow showers in the morning, then snow showers with a slight chance of thunderstorms in the afternoon. Snow may be heavy at times in the morning. Additional snow accumulation of 2 to 4 inches. Much cooler with highs in the lower 30s. Northeast winds 15 to 20 mph with gusts up to 35 mph. Chance of snow near 100 percent. .MONDAY NIGHT...Mostly cloudy. A chance of snow showers in the evening. Additional snow accumulation up to 1 inch possible. Total snow accumulation 2 to 15 inches. Cold with lows around 20. North winds 10 to 15 mph, becoming west around 5 mph after midnight. Chance of snow 50 percent. .TUESDAY...Partly sunny. Widespread frost in the morning. A chance of snow showers in the afternoon. Little or no snow accumulation. Highs in the upper 30s. Southwest winds around 5 mph, becoming east in the afternoon. Chance of snow 50 percent. .TUESDAY NIGHT...Mostly cloudy. Cold with lows in the mid 20s. South winds 5 to 10 mph. .WEDNESDAY AND WEDNESDAY NIGHT...Partly cloudy. Highs in the lower 50s. Lows in the upper 20s. .THURSDAY...Mostlysunny. A chance of rain showers and thunderstorms in the afternoon. Highs in the upper 50s. Chance of rain 50 percent. .THURSDAY NIGHT...Mostly cloudy with a chance of rain showers in the evening, then partly cloudy after midnight. Cold with lows in the lower 30s. Chance of rain 40 percent. .FRIDAY AND FRIDAY NIGHT...Partly cloudy. Highs around 60. Lows in the mid 30s. .SATURDAY...Sunny. Highs in the mid 60s. .SATURDAY NIGHT...Partly cloudy. Lows around 40. .SUNDAY...Sunny. Highs in the lower 70s. $$ NEZ019-181500- Scotts Bluff County- Including the cities of Scottsbluff and Gering 137 AM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... .REST OF TONIGHT...Showers, cooler with lows in the mid 30s. Northeast winds 15 to 20 mph with gusts up to 30 mph. Chance of rain near 100 percent. .MONDAY...Rain showers. A slight chance of thunderstorms and snow showers in the afternoon. Snow accumulation up to 1 inch. Much cooler. Near steady temperature in the upper 30s. North winds 15 to 20 mph with gusts up to 30 mph. Chance of precipitation near 100 percent. .MONDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Widespread frost after midnight. Cold with lows around 30. Northwest winds 15 to 20 mph with gusts up to 30 mph, diminishing to 5 to 10 mph after midnight. .TUESDAY...Widespread frost in the morning. Sunny. Not as cool with highs in the upper 50s. West winds around 5 mph. .TUESDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. Lows in the mid 30s. Southwest winds around 5 mph. .WEDNESDAY...Partly sunny. A chance of rain showers in the afternoon. Highs in the mid 60s. Chance of rain 30 percent. .WEDNESDAY NIGHT...Partly cloudy. Lows around 40. .THURSDAY...Mostly sunny. A chance of showers in the afternoon. Highs around 70. Chance of rain 50 percent. .THURSDAY NIGHT...Mostly cloudy. A chance of showers in the evening. Lows around 40. Chance of rain 50 percent. .FRIDAY...Mostly sunny. A chance of showers in the afternoon. Highs in the lower 70s. Chance of rain 30 percent. .FRIDAY NIGHT...Partly cloudy. Lows in the lower 40s. .SATURDAY...Sunny. Highs in the upper 70s. .SATURDAY NIGHT...Partly cloudy. Lows in the upper 40s. .SUNDAY...Sunny, hot with highs in the mid 80s. $$ WYZ101-181500- Converse County Lower Elevations- Including the cities of Bill, Douglas, Deer Creek, and Glenrock 137 AM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... ...FREEZE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... .REST OF TONIGHT...Rain and snow showers. Snow accumulation up to 1 inch. Colder with lows in the upper 20s. North winds 15 to 20 mph with gusts up to 35 mph. Chance of precipitation near 100 percent. .MONDAY...Snow showers with a slight chance of rain showers. Snow accumulation of 1 to 3 inches. Total snow accumulation up to 13 inches. Breezy and much cooler with highs in the mid 30s. North winds 15 to 25 mph with gusts up to 40 mph. Chance of precipitation near 100 percent. .MONDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Widespread frost after midnight. Cold with lows in the mid 20s. Northwest winds 10 to 15 mph. .TUESDAY...Widespread frost in the morning. Mostly sunny. Not as cool with highs in the upper 40s. West winds 5 to 10 mph. .TUESDAY NIGHT...Mostly clear. Cold with lows in the upper 20s. Southwest winds 5 to 10 mph. .WEDNESDAY...Sunny. Not as cool with highs in the lower 60s. .WEDNESDAY NIGHT...Partly cloudy. Lows in the mid 30s. .THURSDAY...Partly sunny. A chance of rain showers in the afternoon. Highs in the lower 60s. Chance of rain 50 percent. .THURSDAY NIGHT...Mostly cloudy. Lows in the mid 30s. .FRIDAY...Mostly sunny. A chance of rain showers in themorning. Highs in the mid 60s. Chance of rain 30 percent. .FRIDAY NIGHT AND SATURDAY...Partly cloudy. Lows in the upper 30s. Highs in the mid 70s. .SATURDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the lower 40s. .SUNDAY...Sunny. Highs in the upper 70s. $$ WYZ108-181500- Goshen County- Including the city of Torrington 137 AM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... .REST OF TONIGHT...Rain and snow showers. Snow accumulation up to 1 inch. Cooler with lows in the lower 30s. Northeast winds 10 to 15 mph with gusts up to 25 mph. Chance of precipitation near 100 percent. .MONDAY...Rain and snow showers. A slight chance of thunderstorms in the afternoon. Snow accumulation around an inch. Total snow accumulation up to 4 inches. Much cooler. Near steady temperature in the mid 30s. North winds around 15 mph with gusts up to 30 mph. Chance of precipitation near 100 percent. .MONDAY NIGHT...Mostly cloudy with a chance of rain and snow showers in the evening, then partly cloudy after midnight. Widespread frost after midnight. Little or no additional snow accumulation. Cold with lows in the upper 20s. Northwest winds 10 to 15 mph. Chance of precipitation 50 percent. .TUESDAY...Widespread frost in the morning. Mostly sunny. Not as cool with highs in the lower 50s. West winds around 5 mph. .TUESDAY NIGHT...Partly cloudy. Lows in the lower 30s. Southwest winds 5 to 10 mph. .WEDNESDAY AND WEDNESDAY NIGHT...Partly cloudy. Highs in the mid 60s. Lows in the upper 30s. .THURSDAY...Mostly sunny. A chance of rain showers in the afternoon. Highs in the upper 60s. Chance of rain 50 percent. .THURSDAY NIGHT...Mostly cloudy with a chance of rain showers in the evening, then partly cloudy after midnight. Lows in the upper 30s. Chance of rain 40 percent. .FRIDAY...Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the upper 60s. Chance of rain 30 percent. .FRIDAY NIGHT...Partly cloudy. Lows in the lower 40s. .SATURDAY...Sunny. Highs in the upper 70s. .SATURDAY NIGHT...Partly cloudy. Lows in the upper 40s. .SUNDAY...Sunny. Highs in the mid 80s. $$ NEZ003-181500- Box Butte County- Including the cities of Alliance and Hemingford 137 AM MDT Mon May 18 2026 ...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY MORNING... .REST OF TONIGHT...Rain showers likely. Cooler with lows in the mid 30s. Northeast winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 70 percent. .MONDAY...Rain showers. A slight chance of thunderstorms and snow showers in the afternoon. Little or no snow accumulation. Much cooler with highs around 40. North winds around 20 mph with gusts up to 35 mph. Chance of precipitation near 100 percent. .MONDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Widespread frost after midnight. Cold with lows in the upper 20s. North winds 15 to 20 mph with gusts up to 30 mph, becoming northwest 5 to 10 mph after midnight. .TUESDAY...Widespread frost in the morning. Mostly sunny. Not as cool with highs in the mid 50s. Northwest winds 5 to 10 mph. .TUESDAY NIGHT...Partly cloudy. Lows in the mid 30s. South winds around 5 mph. .WEDNESDAY...Partly sunny. A chance of rain showers in the afternoon. Breezy with highs in the lower 60s. Chance of rain 40 percent. .WEDNESDAY NIGHT...Partly cloudy. Lows in the upper 30s. .THURSDAY...Mostly sunny. A chance of showers in the afternoon. Highs in the upper 60s. Chance of rain 50 percent. .THURSDAY NIGHT...A chance of thunderstorms in the evening. Mostly cloudy with a chance of showers. Lows in the upper 30s. Chance of rain 50 percent. .FRIDAY...Partly sunny. A chance of showers in the afternoon. Highs around 70. Chance of rain 40 percent. .FRIDAY NIGHT...Partly cloudy. Lows in thelower 40s. .SATURDAY...Sunny. Highs in the upper 70s. .SATURDAY NIGHT...Partly cloudy. Lows in the mid 40s. .SUNDAY...Sunny, hot with highs in the mid 80s. $$ WYZ109-181500- Central Carbon County- Including the city of Rawlins 137 AM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... ...FREEZE WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH TUESDAY MORNING... .REST OF TONIGHT...Snow and rain showers. Patchy blowing snow. Snow may be heavy at times. Additional snow accumulation of 2 to 4 inches. Windy, colder. Near steady temperature in the lower 30s. Northeast winds 20 to 30 mph with gusts up to 50 mph. Chance of precipitation near 100 percent. .MONDAY...Patchy blowing snow in the morning. A slight chance of thunderstorms. Snow showers. Snow may be heavy at times in the morning. Additional snow accumulation of 6 to 10 inches. Very windy and much colder. Near steady temperature in the upper 20s. Northeast winds 25 to 35 mph. Gusts up to 60 mph, decreasing to 50 mph in the afternoon. Chance of snow near 100 percent. .MONDAY NIGHT...Mostly cloudy. A chance of snow showers in the evening. Widespread frost after midnight. Additional snow accumulation up to 1 inch possible. Total snow accumulation 6 to 23 inches. Cold with lows around 19. North winds 15 to 20 mph with gusts up to 35 mph, becoming northwest around 5 mph after midnight. Chance of snow 50 percent. .TUESDAY...Mostly cloudy in the morning, then clearing. Widespread frost in the morning. Highs in the mid 30s. West winds around 5 mph. .TUESDAY NIGHT...Mostly clear. Cold with lows around 19. South winds around 5 mph. .WEDNESDAY...Sunny. Not as cool with highs in the upper 40s. .WEDNESDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Not as cold with lows around 30. .THURSDAY...Partly sunny. A chance of rain showers and thunderstorms in the afternoon. Highs in the mid 50s. Chance of rain 40 percent. .THURSDAY NIGHT...Mostly cloudy. Cold with lows in the lower 30s. .FRIDAY AND FRIDAY NIGHT...Partly cloudy. Highs in the upper 50s. Lows in the mid 30s. .SATURDAY...Sunny. Highs in the mid 60s. .SATURDAY NIGHT...Partly cloudy. Lows around 40. .SUNDAY...Sunny. Highs in the lower 70s. $$ NEZ002-181500- Dawes County- Including the cities of Chadron and Chadron St Park 137 AM MDT Mon May 18 2026 ...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY MORNING... .REST OF TONIGHT...Rain showers likely. Cooler with lows in the mid 30s. Northeast winds around 15 mph with gusts up to 25 mph. Chance of rain 70 percent. .MONDAY...Rain showers. A slight chance of snow showers in the afternoon. Snow accumulation up to 1 inch. Much cooler. Near steady temperature in the upper 30s. North winds 15 to 20 mph with gusts up to 30 mph. Chance of precipitation near 100 percent. .MONDAY NIGHT...Mostly cloudy with a chance of rain showers in the evening, then partly cloudy after midnight. Widespread frost after midnight. Cold with lows around 30. Northwest winds 15 to 20 mph, diminishing to around 5 mph after midnight. Chance of rain 50 percent. .TUESDAY...Widespread frost in the morning. Mostly sunny. Not as cool with highs in the upper 50s. West winds 5 to 10 mph. .TUESDAY NIGHT...Mostly clear. Lows in the mid 30s. South winds 5 to 10 mph. .WEDNESDAY...Partly sunny. A chance of rain showers in the afternoon. Highs in the mid 60s. Chance of rain 40 percent. .WEDNESDAY NIGHT...Partly cloudy in the evening, then becoming mostly clear. Lows in the lower 40s. .THURSDAY...Mostly sunny. A chance of showers in the afternoon. Highs in the upper 60s. Chance of rain 50 percent. .THURSDAY NIGHT...A chance of thunderstorms in the evening. Mostly cloudy with a chance of showers. Lows in the upper 30s. Chance of rain 50 percent. .FRIDAY...Partly sunny. A chance of showers in the afternoon. Highs around 70. Chance of rain 30 percent. .FRIDAY NIGHT AND SATURDAY...Partly cloudy. Lows in the lower 40s. Highs in the upper 70s. .SATURDAY NIGHT...Partly cloudy. Lows in the upper 40s. .SUNDAY...Sunny, hot with highs in the mid 80s. $$ NEZ055-181500- Cheyenne County- Including the cities of Sidney and Brownson 137 AM MDT Mon May 18 2026 ...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY MORNING... .REST OF TONIGHT...Showers likely. Cooler with lows in the mid 30s. Northeast winds around 15 mph with gusts up to 25 mph. Chance of rain 70 percent. .MONDAY...Rain showers. A slight chance of thunderstorms in the afternoon. Breezy and much cooler with highs in the lower 40s. Northeast winds 15 to 25 mph with gusts up to 35 mph. Chance of rain near 100 percent. .MONDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Cold with lows in the upper 20s. Northwest winds 15 to 20 mph. Gusts up to 35 mph in the evening. .TUESDAY...Mostly sunny. Not as cool with highs in the mid 50s. Northwest winds 5 to 10 mph. .TUESDAY NIGHT...Mostly cloudy. Lows in the mid 30s. East winds around 5 mph, becoming south after midnight. .WEDNESDAY...Mostly cloudy. A chance of rain showers in the afternoon. Highs around 60. Chance of rain 30 percent. .WEDNESDAY NIGHT...Mostly cloudy. Lows in the upper 30s. .THURSDAY...Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the upper 60s. Chance of rain 50 percent. .THURSDAY NIGHT...Mostly cloudy. A chance of showers and thunderstorms in the evening, then a chance of showers after midnight. Lows in the upper 30s. Chance of rain 50 percent. .FRIDAY...Partly sunny. A chance of showers in the afternoon. Highs around 70. Chance of rain 30 percent. .FRIDAY NIGHT...Partly cloudy. A chance of showers in the evening. Lows in the lower 40s. Chance of rain 30 percent. .SATURDAY AND SATURDAY NIGHT...Partly cloudy. Highs in the upper 70s. Lows in the mid 40s. .SUNDAY...Sunny. Highs in the mid 80s. $$ NEZ054-181500- Kimball County- Including the city of Kimball 137 AM MDT Mon May 18 2026 ...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY MORNING... .REST OF TONIGHT...Rain showers. Cooler with lows in the lower 30s. Northeast winds around 15 mph with gusts up to 25 mph. Chance of rain near 100 percent. .MONDAY...Rain showers. Snow showers with a slight chance of thunderstorms in the afternoon. Snow accumulation up to 1 inch. Much cooler. Near steady temperature in the upper 30s. Northeast winds 15 to 20 mph with gusts up to 30 mph. Chance of precipitation near 100 percent. .MONDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Cold with lows in the upper 20s. Northwest winds 15 to 20 mph. .TUESDAY...Widespread frost in the morning. Mostly sunny. Not as cool with highs in the lower 50s. Northwest winds 5 to 10 mph. .TUESDAY NIGHT...Mostly cloudy. Lows in the mid 30s. South winds 5 to 10 mph. .WEDNESDAY...Partly sunny in the morning, then mostly cloudy with a chance of rain showers in the afternoon. Highs around 60. Chance of rain 40 percent. .WEDNESDAY NIGHT...Mostly cloudy with a chance of showers in the evening, then partly cloudy after midnight. Lows in the upper 30s. Chance of rain 30 percent. .THURSDAY...Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the upper 60s. Chance of rain 50 percent. .THURSDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms in the evening, then mostly cloudy after midnight. Lows in the upper 30s. Chance of rain 40 percent. .FRIDAY...Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the upper 60s. Chance of rain 30 percent. .FRIDAY NIGHT...Partly cloudy. Lows around 40. .SATURDAY...Sunny. Highs in the mid 70s. .SATURDAY NIGHT...Partly cloudy. Lows in the mid 40s. .SUNDAY...Sunny. Highs in the lower 80s. $$ WYZ107-181500- East Platte County- Including the cities of Wheatland and Guernsey 137 AM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... .REST OF TONIGHT...Rain and snow showers. Snow accumulation up to 1 inch. Cooler with lows in the lower 30s. North winds 10 to 15 mph with gusts up to 25 mph. Chance of precipitation near 100 percent. .MONDAY...Snow and rain showers. Snow accumulation of 1 to 3 inches. Total snow accumulation 1 to 7 inches. Much cooler. Near steady temperature in the mid 30s. North winds 15 to 20 mph with gusts up to 30 mph. Chance of precipitation near 100 percent. .MONDAY NIGHT...Mostly cloudy with a chance of rain and snow showers in the evening, then partly cloudy after midnight. Widespread frost after midnight. Little or no additional snow accumulation. Cold with lows in the upper 20s. Northwest winds 15 to 20 mph with gusts up to 30 mph, diminishing to 5 to 10 mph after midnight. Chance of precipitation 50 percent. .TUESDAY...Widespread frost in the morning. Mostly sunny. Not as cool with highs around 50. West winds around 5 mph. .TUESDAY NIGHT...Partly cloudy. Cold with lows in the lower 30s. Southwest winds 5 to 10 mph. .WEDNESDAY AND WEDNESDAY NIGHT...Partly cloudy. Highs in the lower 60s. Lows in the upper 30s. .THURSDAY...Partly sunny. A chance of rain showers and thunderstorms in the afternoon. Highs in the mid 60s. Chance of rain 50 percent. .THURSDAY NIGHT...Mostly cloudy. A chance of showers in the evening. Lows in the upper 30s. Chance of rain 40 percent. .FRIDAY AND FRIDAY NIGHT...Partly cloudy. Highs in the upper 60s. Lows in the lower 40s. .SATURDAY AND SATURDAY NIGHT...Partly cloudy. Highs in the mid 70s. Lows in the upper 40s. .SUNDAY...Sunny. Highs around 80. $$ WYZ102-181500- Niobrara County- Including the cities of Lusk and Redbird 137 AM MDT Mon May 18 2026 ...FREEZE WARNING REMAINS IN EFFECT FROM 5 AM TO 10 AM MDT THIS MORNING... ...FREEZE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... .REST OF TONIGHT...Rain and snow showers. Snow accumulation up to 1 inch. Colder with lows in the lower 30s. North winds 10 to 15 mph with gusts up to 30 mph. Chance of precipitation near 100 percent. .MONDAY...Rain and snow showers. Snow accumulation around an inch. Total snow accumulation up to 4 inches. Breezy and much cooler with highs in the upper 30s. North winds 15 to 25 mph with gusts up to 35 mph. Chance of precipitation near 100 percent. .MONDAY NIGHT...Mostly cloudy with a chance of snow showers in the evening, then partly cloudy after midnight. Widespread frost after midnight. Little or no additional snow accumulation. Cold with lows in the upper 20s. Northwest winds 15 to 20 mph with gusts up to 30 mph, diminishing to 5 to 10 mph after midnight. Chance of snow 50 percent. .TUESDAY...Widespread frost in the morning. Mostly sunny. Not as cool with highs in the mid 50s. West winds 5 to 10 mph. .TUESDAY NIGHT...Mostly clear. Cold with lows around 30. Southwest winds 5 to 10 mph. .WEDNESDAY...Sunny, warmer with highs in the mid 60s. .WEDNESDAY NIGHT...Partly cloudy. Lows in the upper 30s. .THURSDAY...Partly sunny. A chance of rain showers in the afternoon. Highs in the mid 60s. Chance of rain 50 percent. .THURSDAY NIGHT...Mostly cloudy. A chance of rain showers in the evening. Lows in the mid 30s. Chance of rain 40 percent. .FRIDAY...Mostly sunny with a chance of rain showers. Highs in the mid 60s. Chance of rain 30 percent. .FRIDAY NIGHT AND SATURDAY...Partly cloudy. Lows in the upper 30s. Highs in the mid 70s. .SATURDAY NIGHT...Partly cloudy in the evening, then clearing. Lowsin the mid 40s. .SUNDAY...Sunny. Highs in the lower 80s. $$ WYZ113-181500- Upper North Platte River Basin- Including the cities of Saratoga and Encampment 137 AM MDT Mon May 18 2026 ...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY MORNING... .REST OF TONIGHT...Rain showers, snow showers with a slight chance of thunderstorms. Snow accumulation around an inch. Cold with lows around 30. East winds 15 to 20 mph with gusts up to 40 mph. Chance of precipitation near 100 percent. .MONDAY...A slight chance of thunderstorms. Snow and rain showers in the morning, then snow showers in the afternoon. Additional snow accumulation of 3 to 5 inches. Blustery and much cooler with highs in the mid 30s. Northeast winds 15 to 25 mph with gusts up to 40 mph. Chance of precipitation near 100 percent. .MONDAY NIGHT...Mostly cloudy. Snow showers likely in the evening. Additional snow accumulation up to 1 inch possible. Total snow accumulation 2 to 13 inches. Colder with lows around 20. North winds 15 to 20 mph with gusts up to 30 mph, becoming west around 5 mph after midnight. Chance of snow 70 percent. .TUESDAY...Mostly cloudy in the morning, then becoming mostly sunny. Widespread frost in the morning. Highs in the upper 30s. West winds around 5 mph. .TUESDAY NIGHT...Partly cloudy. Cold with lows in the lower 20s. South winds around 5 mph. .WEDNESDAY AND WEDNESDAY NIGHT...Mostly clear. Highs in the lower 50s. Lows in the upper 20s. .THURSDAY...Mostly sunny. A chance of rain showers and thunderstorms in the afternoon. Highs in the upper 50s. Chance of rain 50 percent. .THURSDAY NIGHT AND FRIDAY...Mostly cloudy. Lows in the lower 30s. Highs around 60. .FRIDAY NIGHT THROUGH SATURDAY NIGHT...Partly cloudy. Lows in the upper 30s. Highs in the upper 60s. .SUNDAY...Sunny. Highs in the lower 70s. $$ WYZ119-181500- East Laramie County- Including the city of Pine Bluffs 137 AM MDT Mon May 18 2026 ...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY MORNING... .REST OF TONIGHT...Rain and snow showers. Cooler with lows in the lower 30s. Northeast winds around 15 mph with gusts up to 25 mph. Chance of precipitation near 100 percent. .MONDAY...Rain and snow showers. A slight chance of thunderstorms in the afternoon. Snow accumulation around an inch. Much cooler. Near steady temperature in the mid 30s. Northeast winds 15 to 20 mph with gusts up to 30 mph. Chance of precipitation near 100 percent. .MONDAY NIGHT...Mostly cloudy. A chance of rain and snow showers in the evening. Widespread frost after midnight. Little or no additional snow accumulation. Cold with lows in the mid 20s. North winds 15 to 20 mph with gusts up to 30 mph, becoming northwest 5 to 10 mph with gusts up to 20 mph after midnight. Chance of precipitation 50 percent. .TUESDAY...Widespread frost in the morning. Mostly sunny. Not as cool with highs around 50. Northwest winds around 5 mph. .TUESDAY NIGHT...Mostly cloudy. Lows in the mid 30s. South winds around 5 mph, increasing to 10 to 15 mph after midnight. .WEDNESDAY...Partly sunny. A chance of rain showers in the afternoon. Not as cool with highs around 60. Chance of rain 40 percent. .WEDNESDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. Lows in the upper 30s. .THURSDAY...Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the mid 60s. Chance of rain 50 percent. .THURSDAY NIGHT...Mostly cloudy. A chance of showers in the evening. Lows in the mid 30s. Chance of rain 50 percent. .FRIDAY...Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the upper 60s. Chance of rain 30 percent. .FRIDAY NIGHT...Partly cloudy. Lows around 40. .SATURDAY...Sunny. Highs in the mid 70s. .SATURDAY NIGHT...Partly cloudy. Lows in the mid 40s. .SUNDAY...Sunny.Highs around 80. $$ WYZ111-181500- Southwest Carbon County- Including the city of Baggs 137 AM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... ...FREEZE WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH TUESDAY MORNING... .REST OF TONIGHT...Rain showers, snow showers with a slight chance of thunderstorms. Snow accumulation up to 1 inch. Windy, cold. Near steady temperature in the mid 30s. Northeast winds 20 to 30 mph with gusts up to 45 mph. Chance of precipitation near 100 percent. .MONDAY...A slight chance of thunderstorms. Snow and rain showers in the morning, then snow showers in the afternoon. Snow may be heavy at times in the morning. Snow accumulation of 2 to 4 inches. Total snow accumulation up to 10 inches. Very windy and much cooler with highs in the mid 30s. Northeast winds 30 to 40 mph. Gusts up to 60 mph, decreasing to 50 mph in the afternoon. Chance of precipitation near 100 percent. .MONDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Widespread frost after midnight. Blustery, cold with lows in the lower 20s. North winds 20 to 25 mph with gusts up to 40 mph, diminishing to 5 to 10 mph after midnight. .TUESDAY...Widespread frost in the morning. Mostly sunny. Highs in the upper 30s. North winds around 5 mph. .TUESDAY NIGHT...Mostly clear. Cold with lows in the lower 20s. Northeast winds 5 to 10 mph. .WEDNESDAY...Sunny. Not as cool with highs in the lower 50s. .WEDNESDAY NIGHT AND THURSDAY...Partly cloudy. Lows in the lower 30s. Highs in the upper 50s. .THURSDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Cold with lows in the lower 30s. .FRIDAY AND FRIDAY NIGHT...Partly cloudy. Highs in the lower 60s. Lows in the mid 30s. .SATURDAY...Sunny. Highs in the upper 60s. .SATURDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Lows in the upper 30s. .SUNDAY...Sunny. Highs in the mid 70s. $$ WYZ117-181500- South Laramie Range Foothills- Including the cities of Whitaker, Federal, and Horse Creek 137 AM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... ...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY MORNING... .REST OF TONIGHT...Snow and rain showers. Snow accumulation of 1 to 3 inches. Colder with lows in the upper 20s. Northeast winds around 15 mph with gusts up to 30 mph. Chance of precipitation near 100 percent. .MONDAY...Snow showers in the morning, then snow showers with a slight chance of thunderstorms in the afternoon. Additional snow accumulation of 3 to 5 inches. Total snow accumulation 2 to 7 inches. Much cooler with highs in the lower 30s. Northeast winds 15 to 20 mph with gusts up to 30 mph. Chance of snow near 100 percent. .MONDAY NIGHT...Mostly cloudy. A chance of snow showers in the evening. Widespread frost after midnight. Little or no additional snow accumulation. Cold with lows in the lower 20s. North winds 15 to 20 mph with gusts up to 30 mph, becoming northwest 5 to 10 mph after midnight. Chance of snow 50 percent. .TUESDAY...Partly sunny. Widespread frost in the morning. Not as cool with highs in the lower 40s. Southwest winds around 5 mph. .TUESDAY NIGHT...Mostly cloudy. A chance of rain showers after midnight. Cold with lows around 30. South winds 10 to 15 mph. Chance of rain 30 percent. .WEDNESDAY...Partly sunny. A chance of rain showers in the afternoon. Not as cool with highs in the mid 50s. Chance of rain 50 percent. .WEDNESDAY NIGHT...Partly cloudy. Lows in the mid 30s. .THURSDAY...Partly sunny. Rain showers likely with a chance of thunderstorms in the afternoon. Highs around 60. Chance of rain 60 percent. .THURSDAY NIGHT...Mostly cloudy with a chance of rain showers in the evening, then partly cloudy after midnight. Lowsin the mid 30s. Chance of rain 40 percent. .FRIDAY...Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the lower 60s. Chance of rain 30 percent. .FRIDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Lows in the upper 30s. .SATURDAY...Sunny. Highs in the upper 60s. .SATURDAY NIGHT...Partly cloudy. Lows in the lower 40s. .SUNDAY...Sunny. Highs in the mid 70s. $$ NEZ021-181500- Morrill County- Including the cities of Angora, Bridgeport, Bayard, and Redington 137 AM MDT Mon May 18 2026 ...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY MORNING... .REST OF TONIGHT...Showers likely. Cooler with lows in the mid 30s. Northeast winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 70 percent. .MONDAY...Rain showers. A slight chance of thunderstorms in the afternoon. Breezy and much cooler. Near steady temperature around 40. North winds 15 to 25 mph with gusts up to 35 mph. Chance of rain near 100 percent. .MONDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Widespread frost after midnight. Cold with lows in the upper 20s. North winds 15 to 20 mph with gusts up to 35 mph, becoming northwest 5 to 10 mph after midnight. .TUESDAY...Widespread frost in the morning. Sunny. Not as cool with highs in the upper 50s. Northwest winds 5 to 10 mph. .TUESDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. Lows in the mid 30s. South winds 5 to 10 mph. .WEDNESDAY...Mostly cloudy with a chance of rain showers. Breezy with highs in the lower 60s. Chance of rain 30 percent. .WEDNESDAY NIGHT...Partly cloudy. Lows in the upper 30s. .THURSDAY...Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the upper 60s. Chance of rain 50 percent. .THURSDAY NIGHT...Mostly cloudy. A chance of showers and thunderstorms in the evening, then a chance of showers after midnight. Lows in the upper 30s. Chance of rain 50 percent. .FRIDAY...Partly sunny. A chance of showers in the afternoon. Highs around 70. Chance of rain 40 percent. .FRIDAY NIGHT AND SATURDAY...Partly cloudy. Lows in the lower 40s. Highs in the upper 70s. .SATURDAY NIGHT...Partly cloudy. Lows in the upper 40s. .SUNDAY...Sunny, hot with highs in the mid 80s. $$ NEZ095-181500- Northern Sioux County- Including the city of Harrison 137 AM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... .REST OF TONIGHT...Rain showers. Much colder with lows in the lower 30s. Northeast winds 15 to 20 mph with gusts up to 30 mph. Chance of rain near 100 percent. .MONDAY...Rain and snow showers. Snow accumulation around an inch. Much cooler. Near steady temperature in the mid 30s. North winds 15 to 20 mph with gusts up to 30 mph. Chance of precipitation near 100 percent. .MONDAY NIGHT...Mostly cloudy with a chance of rain and snow showers in the evening, then mostly clear after midnight. Widespread frost after midnight. Little or no additional snow accumulation. Cold with lows in the mid 20s. Northwest winds 10 to 15 mph. Chance of precipitation 50 percent. .TUESDAY...Widespread frost in the morning. Sunny. Not as cool with highs in the mid 50s. West winds 5 to 10 mph. .TUESDAY NIGHT...Mostly clear. Cold with lows in the lower 30s. Southwest winds 5 to 10 mph. .WEDNESDAY...Mostly sunny. A chance of rain showers in the afternoon. Warmer with highs in the mid 60s. Chance of rain 40 percent. .WEDNESDAY NIGHT...Partly cloudy in the evening, then becoming mostly clear. Lows in the upper 30s. .THURSDAY...Mostly sunny. A chance of rain showers in the afternoon. Highs in the upper 60s. Chance of rain 50 percent. .THURSDAY NIGHT...Mostly cloudy with a chance of rain showers in the evening, then partly cloudy after midnight. Lows in the mid 30s. Chance of rain 40 percent. .FRIDAY...Mostly sunny. A chance of rain showers in the afternoon. Highs in the upper 60s. Chance of rain 30 percent. .FRIDAY NIGHT...Partly cloudy. Lows in the lower 40s. .SATURDAY...Sunny. Highs in the upper 70s. .SATURDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the upper 40s. .SUNDAY...Sunny. Highs in the mid 80s. $$ WYZ116-181500- South Laramie Range- Including the cities of Buford, Pumpkin Vine, and Vedauwoo 137 AM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... ...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY MORNING... .REST OF TONIGHT...Snow showers. Additional snow accumulation of 2 to 4 inches. Blustery, colder. Near steady temperature in the lower 30s. East winds 15 to 25 mph with gusts up to 40 mph. Chance of snow near 100 percent. .MONDAY...Snow showers in the morning, then snow showers with a slight chance of thunderstorms in the afternoon. Additional snow accumulation of 4 to 6 inches. Blustery and much colder with highs in the upper 20s. Northeast winds 15 to 25 mph with gusts up to 40 mph. Chance of snow near 100 percent. .MONDAY NIGHT...Mostly cloudy. A chance of snow showers in the evening. Little or no additional snow accumulation. Total snow accumulation 4 to 12 inches. Cold with lows around 20. North winds 15 to 20 mph with gusts up to 30 mph, becoming west around 5 mph after midnight. Chance of snow 50 percent. .TUESDAY...Partly sunny. Widespread frost in the morning. A chance of snow showers in the afternoon. Little or no snow accumulation. Highs in the mid 30s. Southwest winds around 5 mph, becoming south in the afternoon. Chance of snow 50 percent. .TUESDAY NIGHT...Mostly cloudy. Cold with lows in the upper 20s. South winds 10 to 15 mph. .WEDNESDAY...Mostly sunny. A chance of rain and snow showers in the afternoon. Not as cool with highs in the upper 40s. Chance of precipitation 50 percent. .WEDNESDAY NIGHT...Partly cloudy. Cold with lows in the lower 30s. .THURSDAY...Mostly sunny. A chance of rain showers and thunderstorms in the afternoon. Highs in the mid 50s. Chance of rain 50 percent. .THURSDAY NIGHT...Mostly cloudy with a chance of rain showers in the evening, then partly cloudy after midnight. Lows in the lower 30s. Chance of rain 40 percent. .FRIDAY AND FRIDAY NIGHT...Partly cloudy. Highs in the upper 50s. Lows in the mid 30s. .SATURDAY...Sunny. Highs in the lower 60s. .SATURDAY NIGHT...Partly cloudy. Lows in the lower 40s. .SUNDAY...Sunny. Highs in the upper 60s. $$ WYZ110-181500- North Snowy Range Foothills- Including the cities of Arlington and Elk Mountain 137 AM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... ...FREEZE WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH TUESDAY MORNING... .REST OF TONIGHT...Snow showers, a slight chance of rain showers and thunderstorms. Patchy blowing snow. Snow may be heavy at times. Additional snow accumulation of 3 to 5 inches. Windy, colder. Near steady temperature in the lower 30s. East winds 20 to 30 mph with gusts up to 45 mph. Chance of precipitation near 100 percent. .MONDAY...Patchy blowing snow in the morning. A slight chance of thunderstorms. Snow showers. Snow may be heavy at times in the morning. Additional snow accumulation of 4 to 8 inches. Windy and much colder with highs in the lower 30s. East winds 20 to 30 mph with gusts up to 45 mph, becoming northeast 15 to 20 mph with gusts up to 35 mph in the afternoon. Chance of snow near 100 percent. .MONDAY NIGHT...Mostly cloudy. Snow showers likely in the evening. Additional snow accumulation up to 1 inch possible. Total snow accumulation 6 to 22 inches. Cold with lows around 19. North winds 10 to 15 mph with gusts up to 25 mph, becoming west around 5 mph after midnight. Chance of snow 70 percent. .TUESDAY...Mostly sunny. Widespread frost in the morning. Highs in the mid 30s. West winds around 5 mph. .TUESDAY NIGHT...Partly cloudy. Cold with lows in the lower 20s. South winds around 5 mph. .WEDNESDAY...Sunny. Not as cool with highs in the upper 40s. .WEDNESDAY NIGHT...Partly cloudy. Cold with lows in the upper 20s. .THURSDAY...Mostly sunny. A chance of rain showers and thunderstorms in the afternoon. Highs in the mid 50s. Chance of rain 50 percent. .THURSDAY NIGHT...Mostly cloudy. A chance of rain showers in the evening. Cold with lows in the lower 30s. Chance of rain 40 percent. .FRIDAY...Mostly sunny. A chance of rain showers and thunderstorms in the afternoon. Highs in the upper 50s. Chance of rain 30 percent. .FRIDAY NIGHT AND SATURDAY...Partly cloudy. Lows in the upper 30s. Highs in the mid 60s. .SATURDAY NIGHT...Partly cloudy. Lows in the lower 40s. .SUNDAY...Sunny. Highs around 70. $$ WYZ106-181500- Central Laramie Range and Southwest Platte County- Including the city of Bordeaux 137 AM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... ...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY MORNING... .REST OF TONIGHT...Snow and rain showers. Snow accumulation of 1 to 3 inches. Much colder with lows around 30. Northeast winds 15 to 20 mph with gusts up to 35 mph. Chance of precipitation near 100 percent. .MONDAY...Snow and rain showers. A slight chance of thunderstorms in the afternoon. Additional snow accumulation of 2 to 4 inches. Total snow accumulation 1 to 10 inches. Much cooler. Near steady temperature in the lower 30s. Northeast winds 15 to 20 mph with gusts up to 35 mph. Chance of precipitation near 100 percent. .MONDAY NIGHT...Mostly cloudy. A chance of snow and rain showers in the evening. Widespread frost after midnight. Little or no additional snow accumulation. Cold with lows in the mid 20s. Northwest winds 10 to 15 mph with gusts up to 25 mph, becoming west 5 to 10 mph after midnight. Chance of precipitation 50 percent. .TUESDAY...Widespread frost in the morning. Mostly sunny. Not as cool with highs in the lower 40s. Southwest winds 5 to 10 mph. .TUESDAY NIGHT...Partly cloudy. Cold with lows around 30. Southwest winds 5 to 10 mph. .WEDNESDAY AND WEDNESDAY NIGHT...Partly cloudy. Highs in the upper 50s. Lows in the mid 30s. .THURSDAY...Partly sunny. A chance of rain showers and thunderstorms in the afternoon. Highs around 60. Chance of rain 50 percent. .THURSDAY NIGHT...Mostly cloudy. A chance of rain showers in the evening. Lows in the upper 30s. Chance of rain 40 percent. .FRIDAY...Mostly sunny. A chance of rain showers and thunderstorms in the afternoon. Highs in the lower 60s. Chance of rain 30 percent. .FRIDAY NIGHT AND SATURDAY...Partly cloudy. Lows in the lower 40s. Highs around 70. .SATURDAY NIGHT...Partly cloudy. Lows in the upper 40s. .SUNDAY...Sunny. Highs in the mid 70s. $$ NEZ020-181500- Banner County- Including the city of Harrisburg 137 AM MDT Mon May 18 2026 ...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY MORNING... .REST OF TONIGHT...Rain showers. Cooler with lows in the lower 30s. Northeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain near 100 percent. .MONDAY...A slight chance of snow showers. Rain showers in the morning, then rain showers with a slight chance of thunderstorms in the afternoon. Snow accumulation around an inch. Much cooler. Near steady temperature in the upper 30s. Northeast winds 15 to 20 mph with gusts up to 30 mph. Chance of precipitation near 100 percent. .MONDAY NIGHT...Mostly cloudy with a chance of rain showers in the evening, then partly cloudy after midnight. Widespread frost after midnight. Cold with lows in the upper 20s. North winds 15 to 20 mph with gusts up to 30 mph, becoming northwest 5 to 10 mph with gusts up to 20 mph after midnight. Chance of rain 40 percent. .TUESDAY...Widespread frost in the morning. Mostly sunny. Not as cool with highs in the lower 50s. Northwest winds 5 to 10 mph. .TUESDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. Lows in the mid 30s. Southwest winds 5 to 10 mph. .WEDNESDAY...Partly sunny. A chance of rain showers in the afternoon. Highs in the lower 60s. Chance of rain 40 percent. .WEDNESDAY NIGHT...Partly cloudy. Lows in the upper 30s. .THURSDAY...Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the upper 60s. Chance of rain 50 percent. .THURSDAY NIGHT...Mostly cloudy. A chance of showers in the evening. Lows in the upper 30s. Chance of rain 40 percent. .FRIDAY...Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the upper 60s. Chance of rain 30 percent. .FRIDAY NIGHT...Partly cloudy. Lows in the lower 40s. .SATURDAY...Sunny. Highs in the upper 70s. .SATURDAY NIGHT...Partly cloudy. Lows in the upper 40s. .SUNDAY...Sunny. Highs in the mid 80s. $$ WYZ114-181500- Snowy Range- Including the cities of Centennial and Albany 137 AM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... .REST OF TONIGHT...Snow showers, rain showers with a slight chance of thunderstorms. Areas of blowing snow. Snow may be heavy at times. Additional snow accumulation of 3 to 5 inches. Blustery, cold. Near steady temperature in the upper 20s. East winds 15 to 25 mph with gusts up to 40 mph. Chance of precipitation near 100 percent. .MONDAY...Areas of blowing snow in the morning. Snow showers with a slight chance of thunderstorms. Snow may be heavy at times. Additional snow accumulation of 6 to 10 inches. Blustery and much colder with highs in the upper 20s. East winds 15 to 25 mph with gusts up to 40 mph. Chance of snow near 100 percent. .MONDAY NIGHT...Mostly cloudy. Snow showers likely, mainly in the evening. Additional snow accumulation around an inch possible. Total snow accumulation 5 to 28 inches. Colder with lows 13 to 19. North winds 10 to 15 mph with gusts up to 25 mph, becoming southwest around 5 mph after midnight. Chance of snow 70 percent. .TUESDAY...Partly sunny. Widespread frost in the morning. A chance of snow showers in the afternoon. Little or no additional snow accumulation. Highs in the mid 30s. Southwest winds around 5 mph, becoming northwest around 5 mph in the afternoon. Chance of snow 50 percent. .TUESDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Cold with lows 16 to 22. Southeast winds around 5 mph, becoming south after midnight. .WEDNESDAY AND WEDNESDAY NIGHT...Partly cloudy. Highs in the upper 40s. Lows in the mid 20s. .THURSDAY...Mostly sunny. A chance of rain showers, thunderstorms and snow showers in the afternoon. Highs in the lower 50s. Chance of precipitation 50 percent. .THURSDAY NIGHT...Mostly cloudy. A chance of rain and snow showers in the evening. Cold with lows in the upper 20s. Chance of precipitation 40 percent. .FRIDAY...Mostly sunny. A chance of snow showers in the afternoon. Highs in the mid 50s. Chance of snow 30 percent. .FRIDAY NIGHT THROUGH SATURDAY NIGHT...Partly cloudy. Lows in the lower 30s. Highs in the lower 60s. .SUNDAY...Sunny. Highs in the mid 60s. $$ WYZ104-181500- Ferris/Seminoe/Shirley Mountains- Including the city of Seminoe Dam 137 AM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... ...FREEZE WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH TUESDAY MORNING... .REST OF TONIGHT...Snow showers with a slight chance of rain showers. Patchy blowing snow. Snow may be heavy at times. Additional snow accumulation of 4 to 6 inches. Windy and much colder. Near steady temperature around 30. Northeast winds 20 to 30 mph with gusts up to 50 mph. Chance of precipitation near 100 percent. .MONDAY...Patchy blowing snow in the morning. Snow showers. Snow may be heavy at times in the morning. Additional snow accumulation of 6 to 10 inches. Total snow accumulation 8 to 28 inches. Windy and much colder. Near steady temperature in the upper 20s. Northeast winds 20 to 30 mph. Gusts up to 55 mph, decreasing to 45 mph in the afternoon. Chance of snow near 100 percent. .MONDAY NIGHT...Mostly cloudy. A chance of snow showers in the evening. Widespread frost after midnight. Little or no additional snow accumulation. Cold with lows around 20. North winds 10 to 15 mph, becoming west around 5 mph after midnight. Chance of snow 50 percent. .TUESDAY...Partly sunny in the morning, then clearing. Widespread frost in the morning. Highs in the mid 30s. Southwest winds around 5 mph. .TUESDAY NIGHT...Mostly clear. Cold with lows in the lower 20s. South winds around 5 mph. .WEDNESDAY...Sunny. Not as cool with highs in the upper 40s. .WEDNESDAY NIGHT...Partly cloudy. Not as cold with lows in the lower 30s. .THURSDAY...Partly sunny. A chance of rain showers, thunderstorms and snow showers in the afternoon. Highs in the lower 50s. Chance of precipitation 50 percent. .THURSDAY NIGHT...Mostly cloudy. Lows in the lower 30s. .FRIDAY AND FRIDAY NIGHT...Partly cloudy. Highs in the upper 50s. Lows in the mid 30s. .SATURDAY AND SATURDAY NIGHT...Partly cloudy. Highs in the mid 60s. Lows in the lower 40s. .SUNDAY...Sunny. Highs around 70. $$ WYZ105-181500- Shirley Basin- Including the cities of Medicine Bow and Shirley Basin 137 AM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... ...FREEZE WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH TUESDAY MORNING... .REST OF TONIGHT...Snow showers with a slight chance of rain showers. Patchy blowing snow. Snow may be heavy at times. Additional snow accumulation of 2 to 4 inches. Colder. Near steady temperature around 30. Northeast winds 15 to 20 mph with gusts up to 35 mph. Chance of precipitation near 100 percent. .MONDAY...Patchy blowing snow in the morning. Snow showers. Snow may be heavy at times in the morning. Additional snow accumulation of 2 to 4 inches. Total snow accumulation 4 to 17 inches. Much colder. Near steady temperature around 30. Northeast winds 15 to 20 mph with gusts up to 35 mph. Chance of snow near 100 percent. .MONDAY NIGHT...Mostly cloudy. A chance of snow showers in the evening. Widespread frost after midnight. Little or no additional snow accumulation. Cold with lows around 18. North winds 10 to 15 mph, becoming northwest around 5 mph after midnight. Chance of snow 50 percent. .TUESDAY...Widespread frost in the morning. Mostly sunny. Highs in the mid 30s. West winds around 5 mph. .TUESDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Cold with lows in the lower 20s. South winds around 5 mph. .WEDNESDAY AND WEDNESDAY NIGHT...Partly cloudy. Highs around 50. Lows in the upper 20s. .THURSDAY...Partly sunny. A chance of rain showers and thunderstorms in the afternoon. Highs in the mid 50s. Chance of rain 50 percent. .THURSDAY NIGHT AND FRIDAY...Mostly cloudy. Lows in the lower 30s. Highs in the upper 50s. .FRIDAY NIGHT THROUGH SATURDAY NIGHT...Partly cloudy. Lows in the mid 30s. Highs in the mid 60s. .SUNDAY...Sunny. Highs in the lower 70s. $$ WYZ103-181500- North Laramie Range- Including the city of Garrett 137 AM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... .REST OF TONIGHT...Snow showers. Snow may be heavy at times. Additional snow accumulation of 3 to 5 inches. Brisk and much colder with lows in the mid 20s. Northeast winds 15 to 25 mph with gusts up to 35 mph. Chance of snow near 100 percent. .MONDAY...Snow showers in the morning, then snow showers with a slight chance of thunderstorms in the afternoon. Snow may be heavy at times in the morning. Additional snow accumulation of 4 to 8 inches. Brisk and much colder. Near steady temperature in the upper 20s. North winds 15 to 25 mph with gusts up to 35 mph. Chance of snow near 100 percent. .MONDAY NIGHT...Mostly cloudy with a chance of snow showers in the evening, then partly cloudy after midnight. Widespread frost after midnight. Little or no additional snow accumulation. Total snow accumulation 4 to 23 inches. Cold with lows around 20. North winds 10 to 15 mph with gusts up to 25 mph, becoming west 5 to 10 mph after midnight. Chance of snow 50 percent. .TUESDAY...Widespread frost in the morning. Mostly sunny. Not as cool with highs in the upper 30s. West winds 5 to 10 mph. .TUESDAY NIGHT...Mostly clear. Cold with lows in the mid 20s. Southwest winds 5 to 10 mph. .WEDNESDAY...Sunny. Not as cool with highs in the lower 50s. .WEDNESDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Cold with lows in the lower 30s. .THURSDAY...Partly sunny. A chance of rain showers, thunderstorms and snow showers in the afternoon. Highs in the mid 50s. Chance of precipitation 50 percent. .THURSDAY NIGHT...Mostly cloudy. A chance of rain and snow showers in the evening. Lows in the lower 30s. Chance of precipitation 30 percent. .FRIDAY...Mostly sunny. A chance of rain showers and thunderstorms in the afternoon. Highs in the upper 50s. Chance of rain 30 percent. .FRIDAY NIGHT AND SATURDAY...Partly cloudy. Lows in the upper 30s. Highs in the mid 60s. .SATURDAY NIGHT...Partly cloudy. Lows in the lower 40s. .SUNDAY...Sunny. Highs around 70. $$ WYZ112-181500- Sierra Madre Range- 137 AM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... .REST OF TONIGHT...Rain showers, snow showers likely with a slight chance of thunderstorms. Additional snow accumulation around an inch. Cold. Near steady temperature in the lower 30s. East winds 10 to 15 mph with gusts up to 30 mph. Chance of precipitation 70 percent. .MONDAY...Rain showers in the morning. Snow showers with a slight chance of thunderstorms. Snow may be heavy at times. Additional snow accumulation of 6 to 10 inches. Blustery and much cooler with highs in the lower 30s. Northeast winds 20 to 25 mph with gusts up to 50 mph. Chance of precipitation near 100 percent. .MONDAY NIGHT...Mostly cloudy. A chance of snow showers in the evening. Widespread frost after midnight. Additional snow accumulation around an inch possible. Total snow accumulation 2 to 23 inches. Colder with lows 16 to 22. Northeast winds 15 to 20 mph with gusts up to 35 mph, becoming east around 5 mph after midnight. Chance of snow 50 percent. .TUESDAY...Mostly sunny. Widespread frost in the morning. A chance of snow showers in the afternoon. Little or no additional snow accumulation. Highs in the upper 30s. Northwest winds around 5 mph. Chance of snow 50 percent. .TUESDAY NIGHT...Partly cloudy. Cold with lows in the lower 20s. Northeast winds around 5 mph, becoming southeast after midnight. .WEDNESDAY AND WEDNESDAY NIGHT...Mostly clear. Highs in the upper 40s. Lows in the upper 20s. .THURSDAY...Mostly sunny. A chance of rain showers, thunderstorms and snow showers in the afternoon. Highs in the mid 50s. Chance of precipitation 50 percent. .THURSDAY NIGHT...Mostly cloudy. Cold with lows in the lower 30s. .FRIDAY AND FRIDAY NIGHT...Partly cloudy. Highs in the mid 50s. Lows in the mid 30s. .SATURDAY AND SATURDAY NIGHT...Partly cloudy. Highs in the lower 60s. Lows in the upper 30s. .SUNDAY...Sunny. Highs in the upper 60s. $$NEZ096-181500- Southern Sioux County- Including the city of Agate 137 AM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... .REST OF TONIGHT...Rain showers. Cooler with lows in the lower 30s. Northeast winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 90 percent. .MONDAY...Rain showers with a slight chance of snow showers. Snow accumulation up to 1 inch. Much cooler. Near steady temperature in the upper 30s. North winds 15 to 20 mph with gusts up to 35 mph. Chance of precipitation near 100 percent. .MONDAY NIGHT...Mostly cloudy with a chance of rain showers in the evening, then partly cloudy after midnight. Widespread frost after midnight. Cold with lows in the upper 20s. North winds 15 to 20 mph with gusts up to 30 mph, becoming northwest 5 to 10 mph after midnight. Chance of rain 50 percent. .TUESDAY...Widespread frost in the morning. Mostly sunny. Not as cool with highs in the mid 50s. West winds 5 to 10 mph. .TUESDAY NIGHT...Partly cloudy. Lows in the mid 30s. Southwest winds around 5 mph. .WEDNESDAY...Partly sunny. A chance of rain showers in the afternoon. Warmer with highs in the mid 60s. Chance of rain 40 percent. .WEDNESDAY NIGHT...Partly cloudy. Lows in the upper 30s. .THURSDAY...Mostly sunny. A chance of showers in the afternoon. Highs in the upper 60s. Chance of rain 50 percent. .THURSDAY NIGHT...Mostly cloudy. A chance of rain showers in the evening. Lows in the upper 30s. Chance of rain 50 percent. .FRIDAY...Mostly sunny. A chance of showers in the afternoon. Highs around 70. Chance of rain 30 percent. .FRIDAY NIGHT...Partly cloudy. Lows in the lower 40s. .SATURDAY...Sunny. Highs in the upper 70s. .SATURDAY NIGHT...Partly cloudy. Lows in the upper 40s. .SUNDAY...Sunny, hot with highs in the mid 80s. $$