FPUS55 KCYS 181908 ZFPCYS Zone Forecast Product for Southeast Wyoming and Western Nebraska Panhandle National Weather Service Cheyenne WY 107 PM MDT Mon May 18 2026 WYZ118-190300- Central Laramie County- Including the city of Cheyenne 107 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... .THIS AFTERNOON...Snow showers, a slight chance of rain showers and thunderstorms. Additional snow accumulation up to 1 inch. Much cooler. Near steady temperature in the lower 30s. North winds around 15 mph with gusts up to 30 mph. Chance of precipitation near 100 percent. .TONIGHT...Mostly cloudy. A chance of snow and rain showers in the evening. Widespread frost after midnight. Little or no snow accumulation. Total snow accumulation 1 to 3 inches. Cold with lows in the mid 20s. North winds 10 to 15 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 in the upper 40s. West winds 5 to 10 mph. .TUESDAY NIGHT...Mostly cloudy. A chance of rain showers after midnight. Lows in the lower 30s. South winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 50 percent. .WEDNESDAY...Partly sunny. A chance of rain showers and thunderstorms in the afternoon. Highs in the upper 50s. South winds 15 to 20 mph. Chance of rain 50 percent. .WEDNESDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. Lows in the mid 30s. .THURSDAY AND THURSDAY NIGHT...Showers likely with a chance of thunderstorms. Highs in the lower 60s. Lows in the mid 30s. Chance of rain 70 percent. .FRIDAY...Partly sunny with a chance of showers. Highs in the lower 60s. Chance of rain 50 percent. .FRIDAY NIGHT AND SATURDAY...Partly cloudy. Lows in the upper 30s. Highs in the upper 60s. .SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows in the lower 40s. Highs in the mid 70s. $$ WYZ115-190300- Laramie Valley- Including the cities of Bosler and Laramie 107 PM 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... ...FREEZE WATCH IN EFFECT FROM LATE TUESDAY NIGHT THROUGH WEDNESDAY MORNING... .THIS AFTERNOON...Snow showers with a slight chance of thunderstorms. Additional snow accumulation around an inch. Much cooler. Near steady temperature in the lower 30s. Northeast winds 15 to 20 mph with gusts up to 30 mph. Chance of snow near 100 percent. .TONIGHT...Mostly cloudy. Snow showers likely, mainly in the evening. Additional snow accumulation around an inch. Total snow accumulation 4 to 9 inches. Colder with lows around 19. North winds 10 to 15 mph, becoming west around 5 mph after midnight. Chance of snow 70 percent. .TUESDAY...Partly sunny. Widespread frost in the morning. Areas of frost in the afternoon. Highs around 40. Southwest winds around 5 mph, becoming northeast in the afternoon. .TUESDAY NIGHT...Mostly cloudy. Widespread frost. Cold with lows in the upper 20s. South winds 5 to 10 mph. .WEDNESDAY...Mostly sunny. Widespread frost in the morning. A chance of rain showers in the afternoon. Not as cool with highs around 50. Southwest winds around 5 mph, becoming northwest in the afternoon. Chance of rain 50 percent. .WEDNESDAY NIGHT...Partly cloudy. Cold with 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...Mostly cloudy. Rain showers likely in the evening, then a chance of rain and snow showers after midnight. Little or no snow accumulation. Lows in the lower 30s. Chance of precipitation 70 percent. .FRIDAY...Partly sunny. A chance of rain showers and thunderstorms in the afternoon. Highs in the mid 50s. Chance of rain 40 percent. .FRIDAY NIGHT AND SATURDAY...Partly cloudy. Lows in the mid 30s. Highs in the mid 60s. .SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows in the upper 30s. Highs around 70. $$ NEZ019-190300- Scotts Bluff County- Including the cities of Scottsbluff and Gering 107 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... .THIS AFTERNOON...Rain showers with a slight chance of thunderstorms. Much cooler. Near steady temperature in the upper 30s. North winds around 15 mph with gusts up to 25 mph. Chance of rain near 100 percent. .TONIGHT...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. North winds 10 to 15 mph with gusts up to 25 mph, becoming northwest 5 to 10 mph after midnight. Chance of rain 50 percent. .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 upper 30s. South winds 5 to 10 mph. .WEDNESDAY...Partly sunny. A chance of showers in the afternoon. Highs in the lower 60s. South winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 30 percent. .WEDNESDAY NIGHT...Partly cloudy in the evening, then clearing. Lows around 40. .THURSDAY...Mostly sunny. Showers likely with a chance of thunderstorms in the afternoon. Highs in the upper 60s. Chance of rain 70 percent. .THURSDAY NIGHT...A chance of thunderstorms in the evening. Showers likely. Lows in the lower 40s. Chance of rain 70 percent. .FRIDAY...Partly sunny with a chance of showers. A chance of thunderstorms in the afternoon. Highs in the mid 60s. Chance of rain 50 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...Mostly clear. Highs in the mid 70s. Lows in the upper 40s. .SUNDAY...Sunny. Highs in the mid 80s. $$ WYZ101-190300- Converse County Lower Elevations- Including the cities of Bill, Douglas, Deer Creek, and Glenrock 107 PM 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... ...FREEZE WATCH IN EFFECT FROM LATE TUESDAY NIGHT THROUGH WEDNESDAY MORNING... .THIS AFTERNOON...Snow and rain showers. Additional snow accumulation up to 1 inch. Total snow accumulation 2 to 4 inches. Much cooler. Near steady temperature in the mid 30s. North winds 15 to 20 mph with gusts up to 35 mph. Chance of precipitation near 100 percent. .TONIGHT...Mostly cloudy with a slight chance of rain and snow showers in the evening, then partly cloudy after midnight. Widespread frost after midnight. 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 20 percent. .TUESDAY...Widespread frost in the morning. Sunny. Not as cool with highs around 50. West winds 5 to 10 mph with gusts up to 20 mph. .TUESDAY NIGHT...Mostly clear. Widespread frost after midnight. Cold with lows in the upper 20s. Southwest winds 5 to 10 mph. .WEDNESDAY...Widespread frost in the morning. Sunny. Not as cool with highs in the lower 60s. Southwest winds 10 to 15 mph. .WEDNESDAY NIGHT...Mostly clear in the evening, then becoming 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. Rain showers likely with a chance of thunderstorms in the evening, then a chance of rain showers after midnight. Lows in the mid 30s. Chance of rain 70 percent. .FRIDAY...Partly sunny with a chance of rain showers. Highs in the lower 60s. Chance of rain 50 percent. .FRIDAY NIGHT...Mostly cloudy in the evening, then clearing. Lows in the upper 30s. .SATURDAY AND SATURDAY NIGHT...Mostly clear. Highs in the lower 70s. Lows in the lower 40s. .SUNDAY...Sunny. Highs in the upper 70s. $$ WYZ108-190300- Goshen County- Including the city of Torrington 107 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... .THIS AFTERNOON...Rain showers, a slight chance of thunderstorms and snow showers. Snow accumulation up to 1 inch. Much cooler. Near steady temperature in the upper 30s. North winds around 15 mph with gusts up to 25 mph. Chance of precipitation near 100 percent. .TONIGHT...Mostly cloudy with a chance of rain showers with a slight chance of snow showers in the evening, then partly cloudy after midnight. Widespread frost after midnight. Little or no 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. Sunny. Not as cool with highs in the mid 50s. West winds around 5 mph. .TUESDAY NIGHT...Partly cloudy. Areas of frost after midnight. Lows in the mid 30s. Southwest winds 5 to 10 mph. Gusts up to 25 mph after midnight. .WEDNESDAY...Mostly sunny. Warmer with highs in the mid 60s. South winds 10 to 15 mph with gusts up to 25 mph. .WEDNESDAY NIGHT...Partly cloudy in the evening, then becoming mostly clear. Lows in the upper 30s. .THURSDAY...Partly sunny. A chance of rain showers and thunderstorms in the afternoon. Highs in the upper 60s. Chance of rain 50 percent. .THURSDAY NIGHT...A chance of thunderstorms in the evening. Showers likely. Lows around 40. Chance of rain 70 percent. .FRIDAY...Partly sunny with a chance of showers. Highs in the mid 60s. Chance of rain 50 percent. .FRIDAY NIGHT...Mostly cloudy in the evening, then clearing. Lows around 40. .SATURDAY AND SATURDAY NIGHT...Mostly clear. Highs in the mid 70s. Lows in the mid 40s. .SUNDAY...Sunny. Highs in the lower 80s. $$ NEZ003-190300- Box Butte County- Including the cities of Alliance and Hemingford 107 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM MDT TUESDAY... .THIS AFTERNOON...Rain showers, a slight chance of thunderstorms and snow showers. Much cooler. Near steady temperature in the upper 30s. North winds around 20 mph with gusts up to 30 mph. Chance of precipitation near 100 percent. .TONIGHT...Mostly cloudy. A chance of rain showers in the evening. Widespread frost after midnight. Cold with lows in the upper 20s. North winds 15 to 20 mph with gusts up to 30 mph, becoming northwest 5 to 10 mph after midnight. Chance of rain 40 percent. .TUESDAY...Widespread frost in the morning. Sunny. Not as cool with highs in the upper 50s. Northwest winds 5 to 10 mph. .TUESDAY NIGHT...Mostly clear in the evening, then becoming mostly cloudy. Lows in the mid 30s. South winds 5 to 10 mph. .WEDNESDAY...Mostly cloudy in the morning, then partly sunny with a chance of rain showers in the afternoon. Breezy with highs around 60. South winds 15 to 25 mph with gusts up to 35 mph. Chance of rain 30 percent. .WEDNESDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the upper 30s. .THURSDAY...Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the mid 60s. Chance of rain 50 percent. .THURSDAY NIGHT...A chance of thunderstorms in the evening. Showers likely. Lows in the upper 30s. Chance of rain 70 percent. .FRIDAY...Partly sunny with a chance of showers. A chance of thunderstorms in the afternoon. Highs in the mid 60s. Chance of rain 50 percent. .FRIDAY NIGHT AND SATURDAY...Partly cloudy. Lows in the upper 30s. Highs in the mid 70s. .SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows in the mid 40s. Highs in the mid 80s. $$ WYZ109-190300- Central Carbon County- Including the city of Rawlins 107 PM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... ...FREEZE WARNING IN EFFECT FROM 6 PM THIS EVENING TO NOON MDT TUESDAY... ...FREEZE WATCH IN EFFECT FROM TUESDAY EVENING THROUGH WEDNESDAY MORNING... .THIS AFTERNOON...Snow showers. Additional snow accumulation around an inch. Windy and much cooler. Near steady temperature in the upper 20s. Northeast winds 20 to 30 mph with gusts up to 50 mph. Chance of snow near 100 percent. .TONIGHT...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 10 to 16 inches. Colder with lows around 17. North winds 15 to 20 mph with gusts up to 35 mph, becoming west around 5 mph after midnight. Chance of snow 50 percent. .TUESDAY...Partly sunny in the morning, then clearing. Widespread frost. Highs in the mid 30s. West winds around 5 mph. .TUESDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Widespread frost. Cold with lows around 20. South winds around 5 mph. .WEDNESDAY...Widespread frost in the morning. Mostly sunny. Not as cool with highs in the mid 40s. Southwest winds around 5 mph. .WEDNESDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Cold with lows in the upper 20s. .THURSDAY...Partly sunny. A chance of rain showers and thunderstorms in the afternoon. Highs in the lower 50s. Chance of rain 50 percent. .THURSDAY NIGHT...Mostly cloudy with a chance of rain showers. A chance of snow showers after midnight. Cold with lows in the lower 30s. Chance of precipitation 50 percent. .FRIDAY...Partly sunny. Highs in the mid 50s. .FRIDAY NIGHT...Mostly cloudy in the evening, then clearing. Lows in the mid 30s. .SATURDAY AND SATURDAY NIGHT...Mostly clear. Highs in the lower 60s. Lows in the upper 30s. .SUNDAY...Sunny. Highs around 70. $$ NEZ002-190300- Dawes County- Including the cities of Chadron and Chadron St Park 107 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM MDT TUESDAY... .THIS AFTERNOON...Rain showers, a slight chance of thunderstorms and snow showers. Much cooler. Near steady temperature in the upper 30s. North winds 15 to 20 mph with gusts up to 30 mph. Chance of precipitation near 100 percent. .TONIGHT...Cloudy with a chance of rain showers in the evening, then partly cloudy after midnight. Widespread frost after midnight. Cold with lows around 30. North winds 15 to 20 mph, becoming west 5 to 10 mph after midnight. Chance of rain 50 percent. .TUESDAY...Widespread frost in the morning. Sunny. Not as cool with highs in the upper 50s. West winds 5 to 10 mph. .TUESDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 30s. South winds 5 to 10 mph. .WEDNESDAY...Partly sunny with a chance of rain showers. Breezy with highs in the lower 60s. South winds 15 to 25 mph with gusts up to 35 mph. Chance of rain 40 percent. .WEDNESDAY NIGHT...Partly cloudy in the evening, then clearing. Breezy with lows around 40. .THURSDAY...Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the upper 60s. Chance of rain 50 percent. .THURSDAY NIGHT...A chance of thunderstorms in the evening. Showers likely. Lows around 40. Chance of rain 70 percent. .FRIDAY...Partly sunny with a chance of showers. A chance of thunderstorms in the afternoon. Highs in the mid 60s. Chance of rain 50 percent. .FRIDAY NIGHT AND SATURDAY...Partly cloudy. Lows in the lower 40s. Highs in the mid 70s. .SATURDAY NIGHT AND SUNDAY...Mostly clear. Hot. Lows in the mid 40s. Highs in the mid 80s. $$ NEZ055-190300- Cheyenne County- Including the cities of Sidney and Brownson 107 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM MDT TUESDAY... .THIS AFTERNOON...Showers. Much cooler. Near steady temperature in the lower 40s. North winds 15 to 20 mph with gusts up to 30 mph. Chance of rain near 100 percent. .TONIGHT...Mostly cloudy. A slight chance of rain showers in the evening. Cold with lows in the upper 20s. Northwest winds 15 to 20 mph. Chance of rain 20 percent. .TUESDAY...Widespread frost in the morning. Sunny. Not as cool with highs in the upper 50s. Northwest winds 5 to 10 mph. .TUESDAY NIGHT...Mostly cloudy. Lows in the upper 30s. South winds 10 to 15 mph. .WEDNESDAY...Mostly cloudy with a chance of showers. Highs in the upper 50s. South winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 40 percent. .WEDNESDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Lows in the mid 30s. .THURSDAY...Partly sunny. Showers likely with a chance of thunderstorms in the afternoon. Highs in the mid 60s. Chance of rain 70 percent. .THURSDAY NIGHT...Showers with a chance of thunderstorms in the evening, then showers likely after midnight. Lows in the upper 30s. Chance of rain 80 percent. .FRIDAY...Partly sunny with a chance of showers. A chance of thunderstorms in the afternoon. Highs in the mid 60s. Chance of rain 50 percent. .FRIDAY NIGHT...Partly cloudy. Lows in the upper 30s. .SATURDAY AND SATURDAY NIGHT...Mostly clear. Highs in the mid 70s. Lows in the mid 40s. .SUNDAY...Sunny. Highs in the lower 80s. $$ NEZ054-190300- Kimball County- Including the city of Kimball 107 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM MDT TUESDAY... .THIS AFTERNOON...Rain showers, a slight chance of thunderstorms and snow showers. Much cooler. Near steady temperature in the upper 30s. North winds 15 to 20 mph with gusts up to 30 mph. Chance of precipitation near 100 percent. .TONIGHT...Mostly cloudy. A chance of rain showers with a slight chance of snow showers in the evening. Widespread frost after midnight. Cold with lows in the upper 20s. Northwest winds 15 to 20 mph. Chance of precipitation 50 percent. .TUESDAY...Widespread frost in the morning. Mostly sunny. Not as cool with highs in the mid 50s. Northwest winds 5 to 10 mph. .TUESDAY NIGHT...Mostly cloudy. A chance of showers after midnight. Lows in the mid 30s. South winds 10 to 15 mph. Chance of rain 40 percent. .WEDNESDAY...Partly sunny in the morning, then mostly cloudy with a chance of rain showers in the afternoon. Highs in the upper 50s. South winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 50 percent. .WEDNESDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Lows in the mid 30s. .THURSDAY...Mostly sunny. Showers likely with a chance of thunderstorms in the afternoon. Highs in the mid 60s. Chance of rain 70 percent. .THURSDAY NIGHT...A chance of thunderstorms in the evening. Showers likely. Lows in the upper 30s. Chance of rain 70 percent. .FRIDAY...Partly sunny with a chance of showers. A chance of thunderstorms in the afternoon. Highs in the mid 60s. Chance of rain 50 percent. .FRIDAY NIGHT...Partly cloudy. Lows in the upper 30s. .SATURDAY...Sunny. Highs in the lower 70s. .SATURDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the lower 40s. .SUNDAY...Sunny. Highs in the lower 80s. $$ WYZ107-190300- East Platte County- Including the cities of Wheatland and Guernsey 107 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... .THIS AFTERNOON...Rain showers, snow showers with a slight chance of thunderstorms. Additional snow accumulation up to 1 inch. Total snow accumulation 1 to 2 inches. Much cooler. Near steady temperature in the mid 30s. North winds around 15 mph with gusts up to 25 mph. Chance of precipitation near 100 percent. .TONIGHT...Mostly cloudy. A chance of rain showers with a slight chance of snow showers in the evening. Widespread frost after midnight. Little or no 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. Sunny. Not as cool with highs in the lower 50s. West winds 5 to 10 mph. .TUESDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Areas of frost after midnight. Lows in the mid 30s. South winds 5 to 10 mph with gusts up to 25 mph. .WEDNESDAY...Mostly sunny. Not as cool with highs in the lower 60s. South winds 5 to 10 mph, becoming west in the afternoon. .WEDNESDAY NIGHT...Mostly clear. 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...A chance of thunderstorms in the evening. Showers likely. Lows around 40. Chance of rain 70 percent. .FRIDAY...Partly sunny with a chance of showers. Highs in the lower 60s. Chance of rain 50 percent. .FRIDAY NIGHT...Mostly cloudy in the evening, then clearing. Lows around 40. .SATURDAY AND SATURDAY NIGHT...Mostly clear. Highs in the lower 70s. Lows in the mid 40s. .SUNDAY...Sunny. Highs around 80. $$ WYZ102-190300- Niobrara County- Including the cities of Lusk and Redbird 107 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... .THIS AFTERNOON...Rain and snow showers. Snow accumulation up to 1 inch. Total snow accumulation 1 to 2 inches. Much cooler. Near steady temperature in the mid 30s. North winds 15 to 20 mph with gusts up to 30 mph. Chance of precipitation near 100 percent. .TONIGHT...Mostly cloudy with a chance of rain and snow showers in the evening, then partly cloudy after midnight. Widespread frost after midnight. Little or no snow accumulation. Cold with lows in the mid 20s. Northwest winds 15 to 20 mph with gusts up to 30 mph, becoming west 5 to 10 mph after midnight. Chance of precipitation 50 percent. .TUESDAY...Widespread frost in the morning. Sunny. Not as cool with highs in the mid 50s. West winds 5 to 10 mph. .TUESDAY NIGHT...Mostly clear. Widespread frost after midnight. Cold with lows in the lower 30s. South winds 5 to 10 mph with gusts up to 20 mph. .WEDNESDAY...Sunny. Not as cool with highs in the mid 60s. Southwest winds 10 to 15 mph with gusts up to 25 mph. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 30s. .THURSDAY...Partly sunny. A chance of rain showers in the afternoon. Highs in the mid 60s. Chance of rain 50 percent. .THURSDAY NIGHT...Mostly cloudy. Rain showers likely with a chance of thunderstorms in the evening, then a chance of rain showers after midnight. Lows in the upper 30s. Chance of rain 70 percent. .FRIDAY...Partly sunny with a chance of rain showers. Highs in the lower 60s. Chance of rain 50 percent. .FRIDAY NIGHT...Mostly cloudy in the evening, then clearing. Lows in the upper 30s. .SATURDAY AND SATURDAY NIGHT...Mostly clear. Highs in the lower 70s. Lows in the lower 40s. .SUNDAY...Sunny. Highs in the lower 80s. $$ WYZ113-190300- Upper North Platte River Basin- Including the cities of Saratoga and Encampment 107 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM MDT TUESDAY... ...FREEZE WATCH IN EFFECT FROM TUESDAY EVENING THROUGH WEDNESDAY MORNING... .THIS AFTERNOON...Snow showers with a slight chance of thunderstorms. Additional snow accumulation of 1 to 3 inches. Much cooler. Near steady temperature inthe lower 30s. Northeast winds 15 to 20 mph with gusts up to 35 mph. Chance of snow near 100 percent. .TONIGHT...Mostly cloudy. Snow showers, mainly in the evening. Additional snow accumulation around an inch. Total snow accumulation 3 to 10 inches. Colder with lows around 19. North winds 10 to 15 mph with gusts up to 25 mph, becoming southwest around 5 mph after midnight. Chance of snow 90 percent. .TUESDAY...Mostly sunny. Widespread frost in the morning. Areas of frost in the afternoon. Highs around 40. Southwest winds around 5 mph, becoming northwest in the afternoon. .TUESDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Widespread frost. Cold with lows in the lower 20s. South winds around 5 mph. .WEDNESDAY...Widespread frost in the morning. Mostly sunny. Not as cool with highs around 50. Southwest winds around 5 mph, becoming west with gusts up to 20 mph in the afternoon. .WEDNESDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Cold with 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...Mostly cloudy with a chance of rain showers. A chance of snow showers after midnight. Cold with lows in the lower 30s. Chance of precipitation 50 percent. .FRIDAY...Partly sunny. A chance of rain and snow showers in the morning. Highs in the mid 50s. Chance of precipitation 30 percent. .FRIDAY NIGHT...Mostly cloudy in the evening, then clearing. Lows in the lower 30s. .SATURDAY AND SATURDAY NIGHT...Mostly clear. Highs in the mid 60s. Lows in the upper 30s. .SUNDAY...Sunny. Highs in the lower 70s. $$ WYZ119-190300- East Laramie County- Including the city of Pine Bluffs 107 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... .THIS AFTERNOON...Rain showers, snow showers with a slight chance of thunderstorms. Little or no snow accumulation. Much cooler. Near steady temperature in the mid 30s. North winds around 15 mph with gusts up to 25 mph. Chance of precipitation near 100 percent. .TONIGHT...Mostly cloudy. A chance of rain and snow showers in the evening. Widespread frost after midnight. Little or no snow accumulation. Cold with lows in the mid 20s. Northwest winds 10 to 15 mph with gusts up to 25 mph. Chance of precipitation 50 percent. .TUESDAY...Widespread frost in the morning. Mostly sunny. Not as cool with highs in the lower 50s. Northwest winds 5 to 10 mph. .TUESDAY NIGHT...Mostly cloudy. A chance of showers after midnight. Lows in the mid 30s. South winds 10 to 15 mph. Chance of rain 50 percent. .WEDNESDAY...Partly sunny. A chance of rain showers and thunderstorms in the afternoon. Highs in the upper 50s. South winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 50 percent. .WEDNESDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. Lows in the upper 30s. .THURSDAY...Mostly sunny. Showers likely with a chance of thunderstorms in the afternoon. Highs in the mid 60s. Chance of rain 70 percent. .THURSDAY NIGHT...A chance of thunderstorms in the evening. Showers likely. Lows in the upper 30s. Chance of rain 70 percent. .FRIDAY...Partly sunny with a chance of showers. Highs in the lower 60s. Chance of rain 50 percent. .FRIDAY NIGHT...Partly cloudy. Lows in the upper 30s. .SATURDAY AND SATURDAY NIGHT...Mostly clear. Highs in the lower 70s. Lows in the lower 40s. .SUNDAY...Sunny. Highs in the upper 70s. $$ WYZ111-190300- Southwest Carbon County- Including the city of Baggs 107 PM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... ...FREEZE WARNING IN EFFECT FROM 6 PM THIS EVENING TO NOON MDT TUESDAY... ...FREEZE WATCH IN EFFECT FROM TUESDAY EVENING THROUGH WEDNESDAY MORNING... .THIS AFTERNOON...Snow showers with a slight chance of thunderstorms. Additional snow accumulation around an inch. Total snow accumulation 2 to 4 inches. Very windy and much cooler with highs in the upper 30s. Northeast winds 25 to 35 mph with gusts up to 50 mph. Chance of snow near 100 percent. .TONIGHT...Mostly cloudy with a slight chance of snow showers in the evening, then partly cloudy after midnight. Widespread frost after midnight. Blustery, colder with lows around 20. North winds 20 to 25 mph with gusts up to 40 mph, diminishing to 5 to 10 mph after midnight. Chance of snow 20 percent. .TUESDAY...Sunny. Widespread frost. Highs around 40. North winds 5 to 10 mph. .TUESDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Widespread frost. Cold with lows in the lower 20s. Northeast winds 5 to 10 mph, becoming east after midnight. .WEDNESDAY...Widespread frost in the morning. Sunny. Not as cool with highs around 50. West winds 5 to 10 mph. .WEDNESDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Cold with lows around 30. .THURSDAY...Partly sunny. A chance of rain showers and thunderstorms in the afternoon. Highs in the upper 50s. Chance of rain 40 percent. .THURSDAY NIGHT...Mostly cloudy. A chance of rain showers and thunderstorms in the evening. Cold with lows in the lower 30s. Chance of rain 50 percent. .FRIDAY...Partly sunny. Highs in the upper 50s. .FRIDAY NIGHT...Mostly cloudy in the evening, then clearing. Lows in the mid 30s. .SATURDAY...Sunny. Highs in the mid 60s. .SATURDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the upper 30s. .SUNDAY...Sunny. Highs in the lower 70s. $$ WYZ117-190300- South Laramie Range Foothills- Including the cities of Whitaker, Federal, and Horse Creek 107 PM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... ...FREEZE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... .THIS AFTERNOON...Snow showers with a slight chance of thunderstorms. Additional snow accumulation around an inch. Much cooler. Near steady temperature in the lower 30s. Northeast winds 15 to 20 mph with gusts up to 30 mph. Chance of snow near 100 percent. .TONIGHT...Mostly cloudy. A chance of snow showers in the evening. Widespread frost after midnight. Additional snow accumulation up to 1 inch possible. Total snow accumulation 4 to 6 inches. Cold with lows in the lower 20s. North winds 15 to 20 mph with gusts up to 30 mph, becoming northwest 5 to 10 mph after midnight. Chance of snow 50 percent. .TUESDAY...Widespread frost in the morning. Mostly sunny. Not as cool with highs in the mid 40s. Southwest winds 5 to 10 mph. .TUESDAY NIGHT...Mostly cloudy. A chance of rain showers after midnight. Cold with lows in the lower 30s. South winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 40 percent. .WEDNESDAY...Mostly sunny. A chance of rain showers and thunderstorms in the afternoon. Not as cool with highs in the mid 50s. Southwest winds 10 to 15 mph. Chance of rain 50 percent. .WEDNESDAY NIGHT...Partly cloudy. Lows in the mid 30s. .THURSDAY AND THURSDAY NIGHT...Mostly cloudy. Rain showers likely with a chance of thunderstorms. Highs around 60. Lows in the mid 30s. Chance of rain 70 percent. .FRIDAY...Partly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the upper 50s. Chance of rain 40 percent. .FRIDAY NIGHT AND SATURDAY...Partly cloudy. Lows in the mid 30s. Highs in the mid 60s. .SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows in the lower 40s. Highs in the lower 70s. $$ NEZ021-190300- Morrill County- Including the cities of Angora, Bridgeport, Bayard, and Redington 107 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM MDT TUESDAY....THIS AFTERNOON...Showers with a slight chance of thunderstorms. Much cooler. Near steady temperature around 40. North winds 15 to 20 mph with gusts up to 30 mph. Chance of rain near 100 percent. .TONIGHT...Mostly cloudy. A chance of rain showers in the evening. Widespread frost after midnight. Cold with lows around 30. North winds 15 to 20 mph with gusts up to 30 mph, becoming northwest 5 to 10 mph after midnight. Chance of rain 40 percent. .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 upper 30s. South winds 5 to 10 mph. .WEDNESDAY...Mostly cloudy and breezy. Highs in the upper 50s. South winds 15 to 25 mph with gusts up to 35 mph. .WEDNESDAY NIGHT...Mostly cloudy in the evening, then clearing. Lows in the upper 30s. .THURSDAY...Mostly sunny. Showers likely with a chance of thunderstorms in the afternoon. Highs in the mid 60s. Chance of rain 70 percent. .THURSDAY NIGHT...A chance of thunderstorms in the evening. Showers likely. Lows around 40. Chance of rain 70 percent. .FRIDAY...Partly sunny with a chance of showers. A chance of thunderstorms in the afternoon. Highs in the mid 60s. Chance of rain 50 percent. .FRIDAY NIGHT...Partly cloudy. Lows around 40. .SATURDAY AND SATURDAY NIGHT...Mostly clear. Highs in the mid 70s. Lows in the mid 40s. .SUNDAY...Sunny. Highs in the lower 80s. $$ NEZ095-190300- Northern Sioux County- Including the city of Harrison 107 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... .THIS AFTERNOON...Rain showers, a slight chance of thunderstorms and snow showers. Little or no snow accumulation. Much cooler. Near steady temperature in the upper 30s. North winds 10 to 15 mph with gusts up to 25 mph. Chance of precipitation near 100 percent. .TONIGHT...Mostly cloudy with rain showers likely with a slight chance of snow showers in the evening, then mostly clear after midnight. Widespread frost after midnight. Little or no snow accumulation. Cold with lows in the mid 20s. Northwest winds 10 to 15 mph. Chance of precipitation 70 percent. .TUESDAY...Widespread frost in the morning. Sunny. Not as cool with highs in the mid 50s. West winds 5 to 10 mph. .TUESDAY NIGHT...Mostly clear. Areas of frost after midnight. Lows in the mid 30s. South winds 5 to 10 mph. .WEDNESDAY...Mostly sunny. Highs in the mid 60s. South winds 15 to 20 mph with gusts up to 35 mph. .WEDNESDAY NIGHT...Partly cloudy in the evening, then becoming mostly clear. Lows in the upper 30s. .THURSDAY...Mostly sunny. A chance of rain showers and thunderstorms in the afternoon. Highs in the upper 60s. Chance of rain 50 percent. .THURSDAY NIGHT...A chance of thunderstorms in the evening. Showers likely. Lows in the upper 30s. Chance of rain 70 percent. .FRIDAY...Partly sunny with a chance of showers. A chance of thunderstorms in the afternoon. Highs in the lower 60s. Chance of rain 50 percent. .FRIDAY NIGHT...Mostly cloudy in the evening, then clearing. Lows in the upper 30s. .SATURDAY AND SATURDAY NIGHT...Mostly clear. Highs in the mid 70s. Lows in the mid 40s. .SUNDAY...Sunny, warmer with highs in the mid 80s. $$ WYZ116-190300- South Laramie Range- Including the cities of Buford, Pumpkin Vine, and Vedauwoo 107 PM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... ...FREEZE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... ...FREEZE WATCH IN EFFECT FROM TUESDAY EVENING THROUGH WEDNESDAY MORNING... .THIS AFTERNOON...Snow showers with a slight chance of thunderstorms. Additional snow accumulation around an inch. Much colder. Near steady temperature in the upper 20s. Northeast winds 15 to20 mph with gusts up to 30 mph. Chance of snow near 100 percent. .TONIGHT...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 9 inches. Cold with lows around 19. 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...Mostly sunny. Widespread frost. Highs in the upper 30s. Southwest winds 5 to 10 mph, becoming southeast in the afternoon. .TUESDAY NIGHT...Mostly cloudy. A chance of snow showers after midnight. Little or no snow accumulation. Not as cold with lows in the upper 20s. South winds 10 to 15 mph with gusts up to 25 mph. Chance of snow 40 percent. .WEDNESDAY...Mostly sunny. A chance of rain showers and thunderstorms in the afternoon. Not as cool with highs in the upper 40s. Southwest winds 10 to 15 mph, becoming west around 5 mph in the afternoon. Chance of rain 50 percent. .WEDNESDAY NIGHT...Partly cloudy. Cold with lows in the lower 30s. .THURSDAY...Partly sunny. Rain showers likely with a chance of thunderstorms in the afternoon. Highs in the mid 50s. Chance of rain 70 percent. .THURSDAY NIGHT...Mostly cloudy. Rain showers likely with a chance of thunderstorms in the evening, then a chance of rain and snow showers after midnight. Little or no snow accumulation. Lows in the mid 30s. Chance of precipitation 70 percent. .FRIDAY...Partly sunny. A chance of rain showers and thunderstorms in the afternoon. Highs in the mid 50s. Chance of rain 40 percent. .FRIDAY NIGHT AND SATURDAY...Partly cloudy. Lows in the mid 30s. Highs in the lower 60s. .SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows around 40. Highs in the upper 60s. $$ WYZ110-190300- North Snowy Range Foothills- Including the cities of Arlington and Elk Mountain 107 PM MDT Mon May 18 2026 ...BLIZZARD WARNING IN EFFECT UNTIL 3 PM MDT THIS AFTERNOON... ...FREEZE WARNING IN EFFECT FROM 6 PM THIS EVENING TO NOON MDT TUESDAY... ...FREEZE WATCH IN EFFECT FROM TUESDAY EVENING THROUGH WEDNESDAY MORNING... .THIS AFTERNOON...Snow showers with a slight chance of thunderstorms. Additional snow accumulation of 1 to 3 inches. Much cooler. Near steady temperature in the upper 20s. Northeast winds 15 to 20 mph with gusts up to 30 mph. Chance of snow near 100 percent. .TONIGHT...Mostly cloudy. Snow showers likely, mainly in the evening. Widespread frost after midnight. Additional snow accumulation around an inch. Total snow accumulation 10 to 14 inches. Colder with lows around 17. North winds 10 to 15 mph, becoming southwest around 5 mph after midnight. Chance of snow 70 percent. .TUESDAY...Mostly sunny. Widespread frost. Highs in the upper 30s. West winds around 5 mph, becoming north in the afternoon. .TUESDAY NIGHT...Partly cloudy. Widespread frost. Cold with lows in the lower 20s. South winds around 5 mph. .WEDNESDAY...Widespread frost in the morning. Mostly sunny. Highs in the mid 40s. West winds 5 to 10 mph. .WEDNESDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Cold with lows in the upper 20s. .THURSDAY...Partly sunny in the morning, then mostly cloudy with a chance of rain showers and thunderstorms in the afternoon. Highs in the lower 50s. Chance of rain 50 percent. .THURSDAY NIGHT...Mostly cloudy. Rain showers likely in the evening, then a chance of rain and snow showers after midnight. Little or no snow accumulation. Lows in the lower 30s. Chance of precipitation 60 percent. .FRIDAY...Partly sunny. A chance of rain and snow showers in the morning. Highs in the mid 50s. Chance of precipitation 40 percent. .FRIDAY NIGHT...Partly cloudy. Lows in the mid 30s. .SATURDAY AND SATURDAY NIGHT...Mostly clear. Highs in the lower 60s. Lows around 40. .SUNDAY...Sunny. Highs in the upper 60s. $$ WYZ106-190300- Central Laramie Range and Southwest Platte County- Including the city of Bordeaux 107 PM 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... .THIS AFTERNOON...Snow showers with possible rain showers and thunderstorms likely. Additional snow accumulation around an inch. Total snow accumulation 4 to 6 inches. Much cooler. Near steady temperature in the lower 30s. North winds around 15 mph with gusts up to 25 mph. Chance of precipitation near 100 percent. .TONIGHT...Mostly cloudy. A slight chance of rain and snow showers in the evening. Widespread frost after midnight. Cold with lows in the lower 20s. North winds 10 to 15 mph with gusts up to 25 mph, becoming west 5 to 10 mph after midnight. Chance of precipitation 20 percent. .TUESDAY...Sunny. Widespread frost in the morning. Areas of frost in the afternoon. Not as cool with highs in the mid 40s. West winds 5 to 10 mph. .TUESDAY NIGHT...Partly cloudy. Widespread frost. Cold with lows in the lower 30s. Southwest winds 5 to 10 mph with gusts up to 20 mph. .WEDNESDAY...Mostly sunny. Not as cool with highs in the upper 50s. West winds 5 to 10 mph with gusts up to 20 mph. .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...A chance of thunderstorms in the evening. Rain showers likely. Lows in the upper 30s. Chance of rain 70 percent. .FRIDAY...Partly sunny with a chance of rain showers. Highs in the upper 50s. Chance of rain 50 percent. .FRIDAY NIGHT...Mostly cloudy in the evening, then clearing. Lows in the upper 30s. .SATURDAY AND SATURDAY NIGHT...Mostly clear. Highs in the upper 60s. Lows in the mid 40s. .SUNDAY...Sunny. Highs in the mid 70s. $$ NEZ020-190300- Banner County- Including the city of Harrisburg 107 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM MDT TUESDAY... .THIS AFTERNOON...Rain showers, a slight chance of thunderstorms and snow showers. Much cooler. Near steady temperature in the upper 30s. North winds around 15 mph with gusts up to 25 mph. Chance of precipitation near 100 percent. .TONIGHT...Mostly cloudy. A chance of rain showers with a slight chance of snow showers in the evening. Widespread frost after midnight. Cold with lows in the upper 20s. Northwest winds 10 to 15 mph with gusts up to 25 mph. Chance of precipitation 50 percent. .TUESDAY...Widespread frost in the morning. Sunny. Not as cool with highs in the mid 50s. Northwest winds 5 to 10 mph. .TUESDAY NIGHT...Mostly cloudy. Not as cool with lows in the upper 30s. South winds 10 to 15 mph. .WEDNESDAY...Partly sunny. A chance of showers in the afternoon. Breezy with highs around 60. South winds 15 to 25 mph. Chance of rain 30 percent. .WEDNESDAY NIGHT...Partly cloudy. Lows in the upper 30s. .THURSDAY...Mostly sunny. Showers likely with a chance of thunderstorms in the afternoon. Highs in the mid 60s. Chance of rain 70 percent. .THURSDAY NIGHT...A chance of thunderstorms in the evening. Showers likely. Lows in the upper 30s. Chance of rain 70 percent. .FRIDAY...Partly sunny with a chance of showers. A chance of thunderstorms in the afternoon. Highs in the mid 60s. Chance of rain 50 percent. .FRIDAY NIGHT...Partly cloudy. A chance of showers in the evening. Lows around 40. Chance of rain 30 percent. .SATURDAY AND SATURDAY NIGHT...Mostly clear. Highs in the mid 70s. Lows in the mid 40s. .SUNDAY...Sunny. Highs in the lower 80s. $$ WYZ114-190300- Snowy Range- Including the cities of Centennial and Albany 107 PM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINSIN EFFECT UNTIL 6 PM MDT THIS EVENING... .THIS AFTERNOON...Snow showers with a slight chance of thunderstorms. Snow may be heavy at times. Additional snow accumulation of 1 to 3 inches. Much colder. Near steady temperature in the upper 20s. Northeast winds 15 to 20 mph with gusts up to 30 mph. Chance of snow near 100 percent. .TONIGHT...Mostly cloudy. Snow showers, mainly in the evening. Additional snow accumulation around an inch. Total snow accumulation 9 to 16 inches. Colder with lows 11 to 19. Northeast winds 10 to 15 mph with gusts up to 25 mph, becoming southwest around 5 mph after midnight. Chance of snow 80 percent. .TUESDAY...Mostly sunny. Highs in the mid 30s. Southwest winds around 5 mph, becoming north in the afternoon. .TUESDAY NIGHT...Partly cloudy. Cold with lows in the lower 20s. South winds 5 to 10 mph. .WEDNESDAY...Mostly sunny. Not as cool with highs in the mid 40s. West winds 5 to 10 mph with gusts up to 20 mph. .WEDNESDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Cold with lows in the mid 20s. .THURSDAY...Partly sunny. Rain showers, snow showers likely with a chance of thunderstorms in the afternoon. Little or no snow accumulation. Highs in the lower 50s. Chance of precipitation 60 percent. .THURSDAY NIGHT...Mostly cloudy. Snow and rain showers likely, mainly in the evening. Little or no snow accumulation. Cold with lows in the upper 20s. Chance of precipitation 60 percent. .FRIDAY...Partly sunny with a chance of snow and rain showers. A chance of thunderstorms in the afternoon. Highs in the lower 50s. Chance of precipitation 40 percent. .FRIDAY NIGHT AND SATURDAY...Partly cloudy. Lows in the upper 20s. Highs in the upper 50s. .SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows in the mid 30s. Highs in the mid 60s. $$ WYZ104-190300- Ferris/Seminoe/Shirley Mountains- Including the city of Seminoe Dam 107 PM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... ...FREEZE WARNING IN EFFECT FROM 6 PM THIS EVENING TO NOON MDT TUESDAY... ...FREEZE WATCH IN EFFECT FROM TUESDAY EVENING THROUGH WEDNESDAY MORNING... .THIS AFTERNOON...Snow showers. Additional snow accumulation of 1 to 3 inches. Blustery and much colder. Near steady temperature in the upper 20s. Northeast winds 20 to 25 mph with gusts up to 40 mph. Chance of snow near 100 percent. .TONIGHT...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 12 to 17 inches. Cold with lows 15 to 21. North winds 10 to 15 mph, becoming west around 5 mph after midnight. Chance of snow 40 percent. .TUESDAY...Mostly sunny. Widespread frost. Highs in the mid 30s. Southwest winds around 5 mph. .TUESDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Widespread frost. Cold with lows in the lower 20s. South winds 5 to 10 mph. .WEDNESDAY...Widespread frost in the morning. Sunny. Highs in the mid 40s. Southwest winds around 5 mph. .WEDNESDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Cold with lows around 30. .THURSDAY...Partly sunny. A chance of rain showers and thunderstorms in the afternoon. Highs in the lower 50s. Chance of rain 50 percent. .THURSDAY NIGHT...Mostly cloudy. Rain showers likely with a chance of thunderstorms in the evening, then a chance of rain and snow showers after midnight. Little or no snow accumulation. Lows in the lower 30s. Chance of precipitation 60 percent. .FRIDAY...Mostly cloudy with a chance of rain and snow showers in the morning, then partly sunny in the afternoon. Highs in the mid 50s. Chance of precipitation 40 percent. .FRIDAY NIGHT...Mostly cloudy in the evening, then clearing. Lows in the mid 30s. .SATURDAY AND SATURDAY NIGHT...Mostly clear. Highs in the lower 60s. Lows around 40. .SUNDAY...Sunny. Highs around 70. $$ WYZ105-190300- Shirley Basin- Including the cities of Medicine Bow and Shirley Basin 107 PM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... ...FREEZE WARNING IN EFFECT FROM 6 PM THIS EVENING TO NOON MDT TUESDAY... ...FREEZE WATCH IN EFFECT FROM TUESDAY EVENING THROUGH WEDNESDAY MORNING... .THIS AFTERNOON...Snow showers with a slight chance of thunderstorms. Additional snow accumulation up to 1 inch. Much cooler. Near steady temperature in the lower 30s. Northeast winds 15 to 20 mph with gusts up to 30 mph. Chance of snow near 100 percent. .TONIGHT...Mostly cloudy. A chance of snow showers in the evening. Widespread frost after midnight. Little or no snow accumulation. Total snow accumulation 6 to 9 inches. Cold with lows around 17. North winds 5 to 10 mph with gusts up to 20 mph, becoming northwest after midnight. Chance of snow 50 percent. .TUESDAY...Partly sunny in the morning, then clearing. Widespread frost. Highs in the upper 30s. Southwest winds around 5 mph. .TUESDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Widespread frost. Cold with lows in the lower 20s. South winds around 5 mph. .WEDNESDAY...Widespread frost in the morning. Mostly sunny. Highs in the upper 40s. Southwest winds 5 to 10 mph. .WEDNESDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Cold with 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...Mostly cloudy. Rain showers likely with a chance of thunderstorms in the evening, then a chance of rain and snow showers after midnight. Little or no snow accumulation. Cold with lows in the lower 30s. Chance of precipitation 60 percent. .FRIDAY...Partly sunny. A chance of rain and snow showers in the morning. Highs in the mid 50s. Chance of precipitation 40 percent. .FRIDAY NIGHT...Mostly cloudy in the evening, then clearing. Lows in the lower 30s. .SATURDAY AND SATURDAY NIGHT...Mostly clear. Highs in the mid 60s. Lows in the upper 30s. .SUNDAY...Sunny. Highs around 70. $$ WYZ103-190300- North Laramie Range- Including the city of Garrett 107 PM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... .THIS AFTERNOON...Snow showers with a slight chance of thunderstorms. Additional snow accumulation around an inch. Much colder. Near steady temperature in the upper 20s. North winds 15 to 20 mph with gusts up to 30 mph. Chance of snow near 100 percent. .TONIGHT...Mostly cloudy. A chance of snow showers in the evening. Additional snow accumulation up to 1 inch possible. Total snow accumulation 9 to 13 inches. Cold with lows 15 to 21. North winds 10 to 15 mph, becoming west 5 to 10 mph after midnight. Chance of snow 50 percent. .TUESDAY...Sunny. Not as cool with highs in the lower 40s. West winds 5 to 10 mph. .TUESDAY NIGHT...Partly cloudy in the evening, then becoming mostly clear. Cold with lows in the mid 20s. Southwest winds 5 to 10 mph with gusts up to 20 mph. .WEDNESDAY...Sunny. Highs around 50. West winds 5 to 10 mph. .WEDNESDAY NIGHT...Mostly clear. Cold with lows in the lower 30s. .THURSDAY...Partly sunny. A chance of rain showers and thunderstorms in the afternoon. Highs in the mid 50s. Chance of rain 50 percent. .THURSDAY NIGHT...Mostly cloudy with rain showers likely. A chance of thunderstorms in the evening, then a chance of snow showers after midnight. Little or no snow accumulation. Lows in the mid 30s. Chance of precipitation 70 percent. .FRIDAY...A chance of snow showers in the morning. Partly sunny with a chance of rain showers. Highs in the mid 50s. Chance of precipitation 50percent. .FRIDAY NIGHT...Mostly cloudy in the evening, then clearing. Lows in the mid 30s. .SATURDAY AND SATURDAY NIGHT...Mostly clear. Highs in the lower 60s. Lows in the lower 40s. .SUNDAY...Sunny. Highs around 70. $$ WYZ112-190300- Sierra Madre Range- 107 PM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... .THIS AFTERNOON...Snow showers with a slight chance of thunderstorms. Snow may be heavy at times. Additional snow accumulation of 2 to 4 inches. Blustery and much cooler with highs in the mid 30s. Northeast winds 20 to 25 mph with gusts up to 45 mph. Chance of snow near 100 percent. .TONIGHT...Mostly cloudy. A chance of snow showers, mainly in the evening. Additional snow accumulation around an inch possible. Total snow accumulation 4 to 14 inches. Colder with lows 15 to 21. Northeast winds 15 to 20 mph with gusts up to 35 mph, becoming southeast around 5 mph after midnight. Chance of snow 50 percent. .TUESDAY...Mostly sunny. Highs in the upper 30s. West winds around 5 mph, becoming north in the afternoon. .TUESDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Cold with lows in the lower 20s. Southeast winds around 5 mph. .WEDNESDAY...Sunny. Highs in the upper 40s. Southwest winds around 5 mph, becoming west with gusts up to 20 mph in the afternoon. .WEDNESDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Cold with lows in the upper 20s. .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. Rain and snow showers likely, mainly in the evening. Little or no snow accumulation. Cold with lows in the lower 30s. Chance of precipitation 60 percent. .FRIDAY...A chance of snow showers in the morning. Partly sunny. Highs in the lower 50s. Chance of snow 30 percent. .FRIDAY NIGHT...Mostly cloudy in the evening, then clearing. Cold with lows in the lower 30s. .SATURDAY...Sunny. Highs around 60. .SATURDAY NIGHT...Partly cloudy. Lows in the mid 30s. .SUNDAY...Sunny. Highs in the mid 60s. $$ NEZ096-190300- Southern Sioux County- Including the city of Agate 107 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... .THIS AFTERNOON...Rain showers, a slight chance of thunderstorms and snow showers. Much cooler. Near steady temperature in the upper 30s. North winds 15 to 20 mph with gusts up to 30 mph. Chance of precipitation near 100 percent. .TONIGHT...Mostly cloudy with a chance of rain showers in the evening, then partly cloudy after midnight. Widespread frost after midnight. Cold with lows in the upper 20s. Northwest winds 10 to 15 mph. Chance of rain 40 percent. .TUESDAY...Widespread frost in the morning. Sunny. Not as cool with highs in the upper 50s. West winds 5 to 10 mph. .TUESDAY NIGHT...Mostly clear in the evening, then becoming mostly cloudy. Lows in the mid 30s. Southwest winds 5 to 10 mph. .WEDNESDAY...Partly sunny. Highs in the lower 60s. South winds 15 to 20 mph with gusts up to 30 mph. .WEDNESDAY NIGHT...Partly cloudy in the evening, then becoming mostly clear. Lows in the upper 30s. .THURSDAY...Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the upper 60s. Chance of rain 50 percent. .THURSDAY NIGHT...Mostly cloudy. Showers likely with a chance of thunderstorms in the evening, then a chance of showers after midnight. Lows in the upper 30s. Chance of rain 70 percent. .FRIDAY...Partly sunny with a chance of showers. A chance of thunderstorms in the afternoon. Highs in the mid 60s. Chance of rain 50 percent. .FRIDAY NIGHT...Partly cloudy. Lows in the upper 30s. .SATURDAY AND SATURDAY NIGHT...Mostly clear. Highs in the mid 70s. Lows in the mid 40s. .SUNDAY...Sunny. Highs in the mid 80s. $$