FPUS55 KTFX 181832 ZFPTFX Zone Forecast Product for Central and Southwest Montana National Weather Service Great Falls MT 1232 PM MDT Mon May 18 2026 Spot temperatures and probabilities of measurable precipitation are for the rest of today, tonight, and Tuesday. MTZ301-182200- East Glacier Park Region- Including the cities of East Glacier Park, Kiowa, Babb, Saint Mary, Marias Pass, and Logan Pass 1232 PM MDT Mon May 18 2026 .REST OF TODAY...Not as cool. Partly sunny. Chance of snow showers and rain showers early in the afternoon, then chance of snow showers and slight chance of thunderstorms late in the afternoon. Near steady temperature in the lower 40s. West winds up to 10 mph. Chance of precipitation 50 percent. .TONIGHT...Mostly cloudy. A 20 percent chance of rain showers and snow showers in the evening. Lows 25 to 31. Southwest winds 5 to 15 mph with gusts to around 30 mph. .TUESDAY...Not as cool. Partly sunny. Chance of rain showers, snow showers and slight chance of thunderstorms in the afternoon. Highs 43 to 55. West winds 10 to 20 mph with gusts to around 35 mph. Chance of precipitation 50 percent. .TUESDAY NIGHT...Mostly cloudy. Chance of rain showers and snow showers in the evening, then chance of rain and snow after midnight. Lows 32 to 38. West winds 5 to 15 mph with gusts to around 35 mph. Chance of precipitation 50 percent. .WEDNESDAY...Rain and snow likely in the morning, then rain showers, snow showers and slight chance of thunderstorms in the afternoon. Light snow accumulations. Highs 39 to 47. Northwest winds 5 to 10 mph. Chance of precipitation near 100 percent. .WEDNESDAY NIGHT...Mostly cloudy. Rain and snow likely in the evening, then chance of snow and rain after midnight. Light snow accumulations. Lows 29 to 35. Chance of precipitation 70 percent. .THURSDAY AND THURSDAY NIGHT...Partly cloudy. Highs 46 to 56. Lows 32 to 38. .FRIDAY...Not as cool. Mostly sunny. A 20 percent chance of rain in the afternoon. Highs 50 to 62. .FRIDAY NIGHT THROUGH SUNDAY...Partly cloudy. Lows 36 to 45. Highs 54 to 66. $$ MTZ307-182200- Southern Rocky Mountain Front- Including the city of Rogers Pass 1232 PM MDT Mon May 18 2026 .REST OF TODAY...Not as cool. Partly sunny. Chance of snow showers early in the afternoon, then chance of snow showers, rain showers and slight chance of thunderstorms late in the afternoon. Near steady temperature in the lower 40s. Northwest winds up to 10 mph. Chance of precipitation 50 percent. .TONIGHT...Partly cloudy. A 20 percent chance of snow showers in the evening. Lows 22 to 28. West winds up to 10 mph. Gusts up to 25 mph after midnight. .TUESDAY...Not as cool. Mostly sunny. Chance of rain showers, snow showers and slight chance of thunderstorms in the afternoon. Highs 43 to 55. West winds 5 to 15 mph with gusts to around 35 mph. Chance of precipitation 50 percent. .TUESDAY NIGHT...Mostly cloudy. A 20 percent chance of rain showers and snow showers in the evening. Lows 29 to 35. West winds 5 to 15 mph with gusts to around 35 mph. .WEDNESDAY...Mostly cloudy. Chance of rain and snow in the morning, then rain showers, slight chance of thunderstorms and snow showers in the afternoon. Light snow accumulations. Highs 40 to 50. West winds 5 to 10 mph with gusts to around 25 mph. Chance of precipitation 90 percent. .WEDNESDAY NIGHT...Mostly cloudy. Rain showers, snow and slight chance of thunderstorms in the evening, then chance of snow and rain after midnight. Moderate snow accumulations. Lows 28 to 34. Chance of precipitation 90 percent. .THURSDAY...Mostly sunny. A 40 percent chance of snow and rain in the morning. Highs 45 to 55. .THURSDAY NIGHT THROUGH FRIDAY NIGHT...Partly cloudy. Lows 29 to 39. Highs 50 to 62. .SATURDAY THROUGH SUNDAY...Partly cloudy. Highs 55 to 69. Lows 38 to 44. $$ MTZ302-182200- Northern High Plains- Including the cities of Browning, Heart Butte, and Dupuyer 1232 PM MDT Mon May 18 2026 .REST OF TODAY...Not as cool. Partly sunny with a 20 percent chance of rain showers. Highs in the lower 50s. West winds up to 5 mph. .TONIGHT...Mostly cloudy with a 20 percent chance of rain showers in the evening, then partly cloudy after midnight. Lows in the lower 30s. Southwest winds 5 to 15 mph. Gusts up to 30 mph after midnight. .TUESDAY...Breezy. Mostly sunny. A 20 percent chance of thunderstorms in the afternoon. Highs in the upper 50s. West winds 15 to 25 mph. .TUESDAY NIGHT...Mostly cloudy. Slight chance of rain showers in the evening, then chance of rain after midnight. Lows in the upper 30s. West winds 10 to 20 mph. Chance of precipitation 40 percent. .WEDNESDAY...Rain likely in the morning, then rain showers and slight chance of thunderstorms in the afternoon. Highs around 50. Northwest winds 5 to 15 mph. Chance of precipitation near 100 percent. .WEDNESDAY NIGHT...Mostly cloudy. Rain likely in the evening, then slight chance of rain after midnight. Lows in the mid 30s. Chance of rain 70 percent. .THURSDAY AND THURSDAY NIGHT...Partly cloudy. Highs in the upper 50s. Lows in the upper 30s. .FRIDAY AND FRIDAY NIGHT...Partly cloudy. Highs in the mid 60s. Lows in the lower 40s. .SATURDAY THROUGH SUNDAY...Partly cloudy. Highs in the lower 70s. Lows in the mid 40s. $$ MTZ308-182200- Southern High Plains- Including the cities of Bynum, Choteau, and Pendroy 1232 PM MDT Mon May 18 2026 .REST OF TODAY...Not as cool. Partly sunny. Slight chance of rain showers and snow showers early in the afternoon, then slight chance of thunderstorms late in the afternoon. Highs in the lower 50s. East winds up to 5 mph. Chance of precipitation 20 percent. .TONIGHT...Mostly cloudy with a 20 percent chance of rain showers in the evening, then partly cloudy after midnight. Lows around 30. Southwest winds up to 10 mph. Gusts up to 25 mph after midnight. .TUESDAY...Mostly sunny. A 20 percent chance of thunderstorms in the afternoon. Highs in the lower 60s. West winds 5 to 15 mph with gusts to around 30 mph. .TUESDAY NIGHT...Mostly cloudy. A 20 percent chance of rain showers in the evening. Lows in the upper 30s. West winds 5 to 10 mph with gusts to around 30 mph. .WEDNESDAY...Partly sunny with chance of rain in the morning, then cloudy with rain showers and slight chance of thunderstorms in the afternoon. Highs in the mid 50s. Northwest winds 5 to 10 mph. Chance of precipitation 90 percent. .WEDNESDAY NIGHT...Mostly cloudy. Rain in the evening, then chance of rain after midnight. Lows in the mid 30s. Chance of rain 90 percent. .THURSDAY...Mostly sunny. A 40 percent chance of rain in the morning. Highs in the lower 60s. .THURSDAY NIGHT AND FRIDAY...Partly cloudy. Lows in the upper 30s. Highs in the upper 60s. .FRIDAY NIGHT AND SATURDAY...Partly cloudy. Lows in the lower 40s. Highs in the mid 70s. .SATURDAY NIGHT AND SUNDAY...Partly cloudy. Lows in the upper 40s. Highs in the mid 70s. $$ MTZ303-182200- Eastern Glacier, Western Toole, and Central Pondera- Including the cities of Cut Bank, Ethridge, and Santa Rita 1232 PM MDT Mon May 18 2026 .REST OF TODAY...Not as cool. Partly sunny. A 20 percent chance of rain showers late in the afternoon. Highs in the mid 50s. South winds up to 10 mph. .TONIGHT...Mostly cloudy with a 20 percent chance of rain showers in the evening, then partly cloudy after midnight. Lows around 30. Southwest winds 5 to 10 mph. .TUESDAY...Mostly sunny. A 20 percent chance of thunderstorms in the afternoon. Highs in the lower 60s. West winds 5 to 20 mph. .TUESDAY NIGHT...Mostly cloudy. Chance of rain showers in the evening, then slight chance of rain after midnight. Lows in the upper 30s. West winds 5 to 15 mph with gusts to around 30 mph. Chance of precipitation 40 percent. .WEDNESDAY...Mostly cloudy. Chance of rain in the morning, then rain showers and slight chance of thunderstorms in the afternoon. Highs in the mid 50s. Northwest winds 10 to 15 mph. Chance of precipitation 90 percent. .WEDNESDAY NIGHT...Mostly cloudy. Chance of rain in the evening, then slight chance of rain after midnight. Lows in the mid 30s. Chance of rain 50 percent. .THURSDAY AND THURSDAY NIGHT...Partly cloudy. Highs in the lower 60s. Lows in the upper 30s. .FRIDAY AND FRIDAY NIGHT...Partly cloudy. Highs in the upper 60s. Lows in the lower 40s. .SATURDAY THROUGH SUNDAY...Partly cloudy. Highs in the mid 70s. Lows in the mid 40s. && TEMPERATURE / PRECIPITATION Cut Bank 54 29 63 / 20 30 20 $$ MTZ304-182200- Eastern Toole and Liberty- Including the cities of Devon, Shelby, Chester, Galata, Joplin, Lothair, and Whitlash 1232 PM MDT Mon May 18 2026 .REST OF TODAY...Not as cool. Mostly sunny. Highs in the mid 50s. East winds up to 5 mph. .TONIGHT...Mostly cloudy in the evening then becoming partly cloudy. Lows around 30. South winds up to 10 mph with gusts to around 25 mph. .TUESDAY...Mostly sunny. Chance of rain showers and slight chance of thunderstorms in the afternoon. Highs in the mid 60s. West winds up to 15 mph. Chance of precipitation 50 percent. .TUESDAY NIGHT...Mostly cloudy. A 50 percent chance of rain showers in the evening. Lows in the upper 30s. West winds 5 to 10 mph with gusts to around 25 mph. .WEDNESDAY...Mostly cloudy. Slight chance of rain in the morning, then rain showers likely and slight chance of thunderstorms in the afternoon. Highs 53 to 59. Northwest winds 5 to 15 mph with gusts to around 30 mph. Chance of precipitation 70 percent. .WEDNESDAY NIGHT...Mostly cloudy. A 50 percent chance of rain in the evening. Lows in the mid 30s. .THURSDAY AND THURSDAY NIGHT...Partly cloudy. Highs in the lower 60s. Lows in the upper 30s. .FRIDAY AND FRIDAY NIGHT...Partly cloudy. Highs in the upper 60s. Lows in the lower 40s. .SATURDAY THROUGH SUNDAY...Partly cloudy. Highs in the mid 70s. Lows in the upper 40s. $$ MTZ305-182200- Hill County- Including the city of Havre 1232 PM MDT Mon May 18 2026 .REST OF TODAY...Mostly sunny. Highs in the mid 50s. Northeast winds up to 10 mph. .TONIGHT...Partly cloudy. Lows around 30. Southeast winds up to 10 mph. .TUESDAY...Warmer. Mostly sunny. Chance of rain showers and slight chance of thunderstorms in the afternoon. Highs in the mid 60s. Southwest winds 5 to 15 mph. Chance of precipitation 50 percent. .TUESDAY NIGHT...Mostly cloudy. A 50 percent chance of rain showers in the evening. Lows around 40. Southwest winds 5 to 10 mph. .WEDNESDAY...Mostly cloudy. Chance of rain in the morning, then rain showers likely and slight chance of thunderstorms in the afternoon. Highs in the upper 50s. Northwest winds 5 to 15 mph. Chance of precipitation 70 percent. .WEDNESDAY NIGHT...Mostly cloudy. A 20 percent chance of rain in the evening. Lows in the upper 30s. .THURSDAY AND THURSDAY NIGHT...Partly cloudy. Highs in the mid 60s. Lows in the upper 30s. .FRIDAY AND FRIDAY NIGHT...Partly cloudy. Highs around 70. Lows in the lower 40s. .SATURDAY...Sunny. Highs in the upper 70s. .SATURDAY NIGHT AND SUNDAY...Partly cloudy. Lows in the mid 40s. Highs around 80. && TEMPERATURE / PRECIPITATION Havre 55 28 68 / 0 0 40 $$ MTZ306-182200- Northern Blaine County- Including the cities of Chinook, Zurich, Harlem, Hogeland, and Fort Belknap 1232 PM MDT Mon May 18 2026 .REST OF TODAY...Mostly cloudy early in the afternoon then becoming mostly sunny. Highs in the lower 50s. North winds 5 to 15 mph. .TONIGHT...Mostly clear. Lows in the upper 20s. Southeast winds 5 to 10 mph. .TUESDAY...Warmer. Mostly sunny. A 20 percent chance of rain showers in the afternoon. Highs in the mid 60s. Southeast winds 5 to 15 mph shifting to the southwest 10 to 15 mph in the afternoon. Gusts up to 30 mph. .TUESDAY NIGHT...Not as cool. Mostly cloudy. A 20 percent chance of rain showers in the evening. Lows in the upper 30s. South winds up to 10 mph. .WEDNESDAY...Partly sunny. Slight chance of rain in the morning, then chance of rain showers and slight chance of thunderstorms in the afternoon. Highs in the upper 50s. West winds 5 to 15 mph shifting to the northwest 15 to 20 mph in the afternoon. Chance of precipitation 50 percent. .WEDNESDAY NIGHT...Mostly cloudy. Slight chance of rain in the evening, then chance of rain after midnight. Lows in the upper 30s. Chance of rain 40 percent. .THURSDAY...Partly sunny. Highs in the lower 60s. .THURSDAY NIGHT THROUGH FRIDAY NIGHT...Partly cloudy. Lows in the upper 30s. Highs in the upper 60s. .SATURDAY...Sunny. Highs in the mid 70s. .SATURDAY NIGHT AND SUNDAY...Partly cloudy. Lows in the mid 40s. Highs in the upper 70s. $$ MTZ309-182200- Eastern Pondera and Eastern Teton- Including the cities of Brady, Conrad, and Ledger 1232 PM MDT Mon May 18 2026 .REST OF TODAY...Not as cool. Mostly sunny. Highs in the mid 50s. East winds up to 5 mph. .TONIGHT...Mostly cloudy in the evening then becoming partly cloudy. Lows in the upper 20s. Southwest winds up to 10 mph. .TUESDAY...Mostly sunny. A 20 percent chance of thunderstorms in the afternoon. Highs in the mid 60s. West winds up to 15 mph. .TUESDAY NIGHT...Mostly cloudy. A 20 percent chance of rain showers in the evening. Lows in the upper 30s. West winds 5 to 10 mph. Gusts up to 25 mph in the evening. .WEDNESDAY...Mostly cloudy. Chance of rain in the morning, then rain showers and slight chance of thunderstorms in the afternoon. Highs in the mid 50s. Northwest winds 5 to 10 mph. Chance of precipitation 90 percent. .WEDNESDAY NIGHT...Mostly cloudy. Rain likely in the evening, then chance of rain after midnight. Lows in the mid 30s. Chance of rain 70 percent. .THURSDAY...Mostly sunny. A 20 percent chance of rain in the morning. Highs in the lower 60s. .THURSDAY NIGHT THROUGH FRIDAY NIGHT...Partly cloudy. Lows in the upper 30s. Highs in the upper 60s. .SATURDAY THROUGH SUNDAY...Partly cloudy. Highs in the upper 70s. Lows in the mid 40s. $$ MTZ310-182200- Western and Central Chouteau County- Including the cities of Floweree, Carter, and Fort Benton 1232 PM MDT Mon May 18 2026 .REST OF TODAY...Not as cool. Mostly sunny. Highs in the lower 50s. North winds up to 10 mph. .TONIGHT...Partly cloudy. Lows around 30. Southeast winds up to 10 mph. .TUESDAY...Warmer. Sunny in the morning, then partly sunny with chance of rain showers and slight chance of thunderstorms in the afternoon. Highs in the mid 60s. Southwest winds up to 10 mph. Chance of precipitation 40 percent. .TUESDAY NIGHT...Mostly cloudy. A 50 percent chance of rain showers in the evening. Lows around 40. Southwest winds 5 to 10 mph. .WEDNESDAY...Mostly cloudy. Chance of rain in the morning, then rain showers likely and slight chance of thunderstorms in the afternoon. Highs in the upper 50s. Northwest winds 5 to 15 mph. Chance of precipitation 70 percent. .WEDNESDAY NIGHT...Mostly cloudy. Rain likely in the evening, then chance of rain after midnight. Lows in the upper 30s. Chance of rain 70 percent. .THURSDAY...Mostly sunny. Chance of rain in the morning, then slight chance of rain in the afternoon. Highs in the lower 60s. Chance of rain 50 percent. .THURSDAY NIGHT THROUGH FRIDAY NIGHT...Partly cloudy. Lows around 40. Highs in the upper 60s. .SATURDAY...Sunny. Highs in the upper 70s. .SATURDAY NIGHT AND SUNDAY...Partly cloudy. Lows in the upper 40s. Highs around 80. $$ MTZ311-182200- Bears Paw Mountains and Southern Blaine- Including the city of Rocky Boy 1232 PM MDT Mon May 18 2026 .REST OF TODAY...Partly sunny. Highs 47 to 53. North winds 5 to 10 mph. .TONIGHT...Mostly clear. Lows in the upper 20s. East winds up to 10 mph shifting to the south after midnight. .TUESDAY...Warmer. Mostly sunny. A 20 percent chance of rain showers in the afternoon. Highs 61 to 67. Southwest winds 5 to 10 mph. .TUESDAY NIGHT...Not as cool. Mostly cloudy. A 20 percent chance of thunderstorms in the evening. Lows in the lower 40s. Southwest winds up to 10 mph. .WEDNESDAY...Partly sunny. Slight chance of rain in the morning, then rain showers likely and slight chance of thunderstorms in the afternoon. Highs 54 to 60. Northwest winds 5 to 15 mph. Chance of precipitation 70 percent. .WEDNESDAY NIGHT...Mostly cloudy with a 50 percent chance of rain. Lows around 40. .THURSDAY...Partly sunny with a 20 percent chance of rain. Highs 58 to 64. .THURSDAY NIGHT THROUGH FRIDAY NIGHT...Partly cloudy. Lows in the lower 40s. Highs 64 to 70. .SATURDAY...Warmer, sunny. Highs 72 to 78. .SATURDAY NIGHT AND SUNDAY...Partly cloudy. Lows in the upper 40s. Highs 75 to 81. $$ MTZ312-182200- Cascade County below 5000ft- Including the city of Great Falls 1232 PM MDT Mon May 18 2026 .REST OF TODAY...Not as cool. Mostly sunny. Highs 49 to 55. Northeast winds up to 10 mph. .TONIGHT...Partly cloudy. Lows around 30. South winds up to 10 mph. .TUESDAY...Not as cool. Mostly sunny. A 20 percent chance of thunderstorms in the afternoon. Highs in the mid 60s. Southwest winds 5 to 15 mph. .TUESDAY NIGHT...Mostly cloudy. A 20 percent chance of rain showers in the evening. Lows around 40. Southwest winds 5 to 10 mph. .WEDNESDAY...Mostly cloudy. Chance of rain in the morning, then rain showers likely and slight chance of thunderstorms in the afternoon. Highs in the mid 50s. West winds 5 to 10 mph shifting to the north in the afternoon. Chance of precipitation 70 percent. .WEDNESDAY NIGHT...Mostly cloudy. Rain showers and slight chance of thunderstorms in the evening, then chance of rain after midnight. Lows in the upper 30s. Chance of precipitation 90 percent. .THURSDAY...Partly sunny. Chance of rain in the morning, then slight chance of rain in the afternoon. Highs in the lower 60s. Chance of rain 50 percent. .THURSDAY NIGHT AND FRIDAY...Partly cloudy. Lows in the upper 30s. Highs in the upper 60s. .FRIDAY NIGHT...Partly cloudy. Lows in the lower 40s. .SATURDAY...Sunny. Highs in the mid 70s. .SATURDAY NIGHT AND SUNDAY...Partly cloudy. Lows in the upper 40s. Highs in the upper 70s. && TEMPERATURE / PRECIPITATION Great Falls Arpt 53 30 64 / 10 0 40 $$ MTZ313-182200- Judith Basin County and Judith Gap- Including the cities of Raynesford, Geyser, Stanford, Windham, Benchland, Hobson, and Moccasin 1232 PM MDT Mon May 18 2026 .REST OF TODAY...Mostly sunny. Highs in the upper 40s. North winds 10 to 15 mph with gusts to around 30 mph. .TONIGHT...Mostly clear. Lows in the upper 20s. Northeast winds up to 10 mph shifting to the south after midnight. .TUESDAY...Not as cool. Mostly sunny. A 20 percent chance of thunderstorms in the afternoon. Highs around 60. West winds 5 to 10 mph. .TUESDAY NIGHT...Not as cool. Mostly cloudy. A 20 percent chance of rain showers in the evening. Lows in the upper 30s. Southwest winds up to 15 mph. .WEDNESDAY...Mostly sunny with slight chance of rain in the morning, then mostly cloudy with rain showers and chance of thunderstorms in the afternoon. Highs in the mid 50s. Northwest winds 5 to 15 mph. Chance of precipitation 80 percent. .WEDNESDAY NIGHT...Rain showers and slight chance of thunderstorms in the evening, then rain likely and slight chance of snow after midnight. Lows in the mid 30s. Chance of precipitation 90 percent. .THURSDAY...Partly sunny. Rain likely in the morning, then chance of rain showers and slight chance of thunderstorms in the afternoon. Highs in the upper 50s. Chance of precipitation 60 percent. .THURSDAY NIGHT AND FRIDAY...Partly cloudy. Lows in the mid 30s. Highs in the mid 60s. .FRIDAY NIGHT...Partly cloudy. Lows in the lower 40s. .SATURDAY...Sunny. Highs in the lower 70s. .SATURDAY NIGHT AND SUNDAY...Partly cloudy. Lows in the upper 40s. Highs in the mid 70s. $$ MTZ314-182200- Fergus County below 4500ft- Including the cities of Hilger and Lewistown 1232 PM MDT Mon May 18 2026 .REST OF TODAY...Partly sunny. Highs 47 to 53. North winds 5 to 15 mph. .TONIGHT...Mostly clear. Lows in the upper 20s. East winds up to 10 mph shifting to the south after midnight. .TUESDAY...Warmer. Mostly sunny. A 20 percent chance of rain showers in the afternoon. Highs 61 to 67. Southwest winds up to 10 mph. .TUESDAY NIGHT...Not as cool. Mostly cloudy. A 20 percent chance of rain showers in the evening. Lows around 40. Southwest winds up to 10 mph. .WEDNESDAY...Partly sunny. Chance of rain showers and slight chance of thunderstorms in the afternoon. Highs 56 to 62. West winds 5 to 15 mph. Chance of precipitation 50 percent. .WEDNESDAY NIGHT...Rain showers and slight chance of thunderstorms in the evening, then rain likely after midnight. Lows around 40. Chance of precipitation 80 percent. .THURSDAY...Partly sunny with a 50 percent chance of rain. Highs 57 to 63. .THURSDAY NIGHT AND FRIDAY...Partly cloudy. Lows in the upper 30s. Highs in the upper 60s. .FRIDAY NIGHT...Partly cloudy. Lows in the lower 40s. .SATURDAY...Sunny. Highs in the mid 70s. .SATURDAY NIGHT AND SUNDAY...Partly cloudy. Lows in the upper 40s. Highs in the upper 70s. && TEMPERATURE / PRECIPITATION Lewistown 46 26 60 / 10 0 20 $$ MTZ315-182200- Upper Blackfoot and MacDonald Pass- Including the cities of Marysville, Lincoln, Flesher Pass, and MacDonald Pass 1232 PM MDT Mon May 18 2026 .REST OF TODAY...Not as cool. Partly sunny. Chance of rain showers and slight chance of snow showers early in the afternoon, then slight chance of rain showers and snow showers late in the afternoon. Highs 42 to 52. North winds up to 10 mph. Chance of precipitation 50 percent. .TONIGHT...Partly cloudy. Lows in the upper 20s. West winds up to 10 mph. .TUESDAY...Not as cool. Mostly sunny. A 20 percent chance of thunderstorms in the afternoon. Highs 49 to 59. West winds up to 15 mph. .TUESDAY NIGHT...Partly cloudy. A 20 percent chance of rain showers in the evening. Lows in the mid 30s. West winds up to 10 mph with gusts to around 25 mph. .WEDNESDAY...Mostly sunny. Chance of rain showers and slight chance of thunderstorms in the afternoon. Highs 46 to 54. West winds up to 15 mph. Chance of precipitation 50 percent. .WEDNESDAY NIGHT...Rain showers and slight chance of thunderstorms in the evening, then rain and snow likely after midnight. Lows in the mid 30s. Chance of precipitation 90 percent. .THURSDAY...Partly sunny. A 50 percent chance of rain and snow in the morning. Highs 50 to 58. .THURSDAY NIGHT THROUGH FRIDAY NIGHT...Partly cloudy. Lows in the upper 30s. Highs 55 to 65. .SATURDAY...Sunny. Highs 62 to 70. .SATURDAY NIGHT AND SUNDAY...Partly cloudy. Lows in the lower 40s. Highs 65 to 73. $$ MTZ316-182200- Gates of the Mountains- Including the cities of Canyon Creek, Wolf Creek, and Craig 1232 PM MDT Mon May 18 2026 .REST OF TODAY...Not as cool. Mostly sunny. Highs 47 to 55. Northeast winds up to 10 mph. .TONIGHT...Partly cloudy. Lows in the upper 20s. Southwest winds up to 10 mph. .TUESDAY...Not as cool. Mostly sunny. A 20 percent chance of thunderstorms in the afternoon. Highs 56 to 64. Southwest winds 5 to 10 mph with gusts to around 25 mph. .TUESDAY NIGHT...Partly cloudy. A 20 percent chance of rain showers in the evening. Lows in the upper 30s. Southwest winds up to 10 mph. .WEDNESDAY...Mostly sunny with slight chance of rain in the morning, then mostly cloudy with rain showers likely and slight chance of thunderstorms in the afternoon. Highs 49 to 57. Southwest winds up to 10 mph shifting to the northwest in the afternoon. Chance of precipitation 70 percent. .WEDNESDAY NIGHT...Rain showers and slight chance of thunderstorms in the evening, then rain likely and slight chance of snow after midnight. Lows in the upper 30s. Chance of precipitation 90 percent. .THURSDAY...Partly sunny. A 50 percent chance of rain and snow in the morning. Highs 56 to 62. .THURSDAY NIGHT THROUGH FRIDAY NIGHT...Partly cloudy. Lows around 40. Highs 61 to 69. .SATURDAY...Warmer, sunny. Highs 68 to 76. .SATURDAY NIGHT AND SUNDAY...Partly cloudy. Lows in the upper 40s. Highs 71 to 79. $$ MTZ317-182200- Little Belt and Highwood Mountains- Including the cities of Monarch, Neihart, and Kings Hill Pass 1232 PM MDT Mon May 18 2026 .REST OF TODAY...Not as cool. Mostly sunny. Highs 38 to 46. North winds 5 to 10 mph with gusts to around 30 mph. .TONIGHT...Partly cloudy. Lows 22 to 28. North winds up to 5 mph shifting to the southwest after midnight. .TUESDAY...Not as cool. Mostly sunny. A 20 percent chance of thunderstorms and snow showers in the afternoon. Highs 49 to 57. West winds 5 to 15 mph. .TUESDAY NIGHT...Mostly cloudy. A 50 percent chance of rain showers in the evening. Lows 32 to 38. Southwest winds up to 10 mph with gusts to around 25 mph. .WEDNESDAY...Mostly sunny with slight chance of rain in the morning, then mostly cloudy with rain showers likely and chance of thunderstorms in the afternoon. Highs 44 to 52. West winds 5 to 15 mph. Chance of precipitation 70 percent. .WEDNESDAY NIGHT...Rain showers and slight chance of thunderstorms in the evening, then rain and snow likely after midnight. Moderate snow accumulations. Lows 31 to 37. Chance of precipitation 90 percent. .THURSDAY...Partly sunny. Snow and rain likely in the morning, then chance of rain showers, snow showers and slight chance of thunderstorms in the afternoon. Highs 47 to 55. Chance of precipitation 70 percent. .THURSDAY NIGHT...Partly cloudy. Lows 31 to 37. .FRIDAY...Not as cool. Mostly sunny. A 20 percent chance of rain in the afternoon. Highs 54 to 62. .FRIDAY NIGHT...Partly cloudy. Lows 34 to 42. .SATURDAY...Sunny. Highs 62 to 68. .SATURDAY NIGHT AND SUNDAY...Partly cloudy. Lows 40 to 48. Highs 66 to 72. $$ MTZ318-182200- Snowy and Judith Mountains- 1232 PM MDT Mon May 18 2026 .REST OF TODAY...Partly sunny. A 20 percent chance of snow showers early in the afternoon. Highs 37 to 43. North winds 5 to 15 mph. .TONIGHT...Mostly clear. Lows in the lower 20s. North winds up to 10 mph shifting to the south after midnight. .TUESDAY...Not as cool. Mostly sunny. A 20 percent chance of thunderstorms in the afternoon. Highs 50 to 58. West winds up to 10 mph. .TUESDAY NIGHT...Not as cool. Mostly cloudy. A 20 percent chance of rain showers in the evening. Lows in the mid 30s. Southwest winds up to 10 mph with gusts to around 25 mph. .WEDNESDAY...Mostly sunny in the morning, then mostly cloudy with rain showers likely and chance of thunderstorms in the afternoon. Highs 48 to 56. Northwest winds 5 to 15 mph with gusts to around 30 mph. Chance of precipitation 70 percent. .WEDNESDAY NIGHT...Rain showers and slight chance of thunderstorms in the evening, then rain and snow likely after midnight. Light snow accumulations. Lows in the mid 30s. Chance of precipitation 90 percent. .THURSDAY...Partly sunny. Rain and snow likely in the morning, then chance of rain showers and slight chance of thunderstorms in the afternoon. Highs 48 to 54. Chance of precipitation 70 percent. .THURSDAY NIGHT AND FRIDAY...Partly cloudy. Lows in the mid 30s. Highs 54 to 62. .FRIDAY NIGHT...Partly cloudy. Lows in the upper 30s. .SATURDAY...Warmer, sunny. Highs 64 to 70. .SATURDAY NIGHT AND SUNDAY...Partly cloudy. Lows in the mid 40s. Highs 67 to 75. $$ MTZ319-182200- Helena Valley- Including the city of Helena 1232 PM MDT Mon May 18 2026 .REST OF TODAY...Mostly sunny. Highs in the mid 50s. North winds 5 to 10 mph. .TONIGHT...Partly cloudy. Lows in the upper 20s. West winds up to 5 mph shifting to the south after midnight. .TUESDAY...Mostly sunny. A 20 percent chance of rain showers in the afternoon. Highs in the mid 60s. South winds up to 5 mph shifting to the west in the afternoon. .TUESDAY NIGHT...Mostly cloudy with a 30 percent chance of rain showers in the evening, then partly cloudy after midnight. Lows in the upper 30s. West winds up to 10 mph. .WEDNESDAY...Partly sunny. Chance of rain showers and slight chance of thunderstorms in the afternoon. Highs in the upper 50s. West winds up to 5 mph shifting to the northwest in the afternoon. Chance of precipitation 40 percent. .WEDNESDAY NIGHT...Rain showers and slight chance of thunderstorms in the evening, then rain likely after midnight. Lows in the mid 30s. Chance of precipitation 80 percent. .THURSDAY...Partly sunny. A 50 percent chance of rain in the morning. Highs in the mid 60s. .THURSDAY NIGHT THROUGH FRIDAY NIGHT...Partly cloudy. Lows in the upper 30s. Highs in the upper 60s. .SATURDAY...Sunny. Highs in the mid 70s. .SATURDAY NIGHT AND SUNDAY...Partly cloudy. Lows in the mid 40s. Highs in the upper 70s. && TEMPERATURE / PRECIPITATION Helena 56 30 65 / 0 10 30 $$ MTZ320-182200- Big Belt, Bridger and Castle Mountains- Including the cities of Trident, Maudlow, Battle Ridge Pass, Bozeman Pass, and Deep Creek Pass 1232 PM MDT Mon May 18 2026 .REST OF TODAY...Mostly sunny. Highs 38 to 48. North winds 5 to 15 mph. .TONIGHT...Mostly clear. Lows 22 to 28. North winds up to 10 mph shifting to the southwest after midnight. Gusts up to 25 mph. .TUESDAY...Not as cool. Mostly sunny. A 20 percent chance of rain showers in the afternoon. Highs 48 to 58. West winds 5 to 15 mph with gusts to around 30 mph. .TUESDAY NIGHT...Mostly cloudy with a 20 percent chance of rain showers in the evening, then partly cloudy after midnight. Lows in the mid 30s. West winds up to 10 mph with gusts to around 25 mph. .WEDNESDAY...Partly sunny. Chance of rain showers and slight chance of thunderstorms in the afternoon. Highs 46 to 54. West winds up to 15 mph with gusts to around 30 mph. Chance of precipitation 50 percent. .WEDNESDAY NIGHT...Rain showers and slight chance of thunderstorms in the evening, then rain and snow likely after midnight. Light snow accumulations. Lows in the mid 30s. Chance of precipitation 90 percent. .THURSDAY...Partly sunny. Chance of rain and snow in the morning, then slight chance of thunderstorms and snow showers in the afternoon. Highs 46 to 56. Chance of precipitation 50 percent. .THURSDAY NIGHT THROUGH FRIDAY NIGHT...Partly cloudy. Lows in the mid 30s. Highs 53 to 63. .SATURDAY...Warmer, sunny. Highs 62 to 70. .SATURDAY NIGHT AND SUNDAY...Partly cloudy. Lows in the mid 40s. Highs 65 to 75. $$ MTZ321-182200- Meagher County Valleys- Including the cities of Martinsdale, Checkerboard, Ringling, and White Sulphur Springs 1232 PM MDT Mon May 18 2026 .REST OF TODAY...Mostly sunny. Highs in the upper 40s. North winds 5 to 15 mph. .TONIGHT...Partly cloudy. Lows in the mid 20s. North winds up to 10 mph shifting to the southeast after midnight. .TUESDAY...Mostly sunny. A 20 percent chance of rain showers in the afternoon. Highs in the upper 50s. West winds up to 15 mph. .TUESDAY NIGHT...Mostly cloudy with a 20 percent chance of rain showers in the evening, then partly cloudy after midnight. Lows in the mid 30s. West winds up to 10 mph. Gusts up to 25 mph in the evening. .WEDNESDAY...Partly sunny. Chance of rain showers and slight chance of thunderstorms in the afternoon. Highs in the mid 50s. West winds up to 5 mph increasing to 5 to 15 mph in the afternoon. Chance of precipitation 50 percent. .WEDNESDAY NIGHT...Rain showers and slight chance of thunderstorms in the evening, then rain and snow likely after midnight. Lows in the mid 30s. Chance of precipitation 90 percent. .THURSDAY...Partly sunny. Chance of rain and snow in the morning, then slight chance of thunderstorms in the afternoon. Highs in the mid 50s. Chance of precipitation 50 percent. .THURSDAY NIGHT THROUGH FRIDAY NIGHT...Partly cloudy. Lows in the mid 30s. Highs in the lower 60s. .SATURDAY...Sunny. Highs in the upper 60s. .SATURDAY NIGHT AND SUNDAY...Partly cloudy. Lows in the lower 40s. Highs in the lower 70s. $$ MTZ322-182200- Elkhorn and Boulder Mountains- Including the cities of Montana City, Clancy, Boulder, Corbin, Wickes, Elk Park Pass, and Homestake Pass 1232 PM MDT Mon May 18 2026 .REST OF TODAY...Not as cool. Mostly sunny. Highs 39 to 49. North winds 5 to 10 mph with gusts to around 25 mph. .TONIGHT...Partly cloudy. Lows 23 to 29. Northwest winds up to 5 mph with gusts to around 20 mph shifting to the west after midnight. .TUESDAY...Not as cool. Mostly sunny. Chance of rain showers and slight chance of snow showers in the afternoon. Highs 48 to 58. West winds up to 10 mph. Chance of precipitation 40 percent. .TUESDAY NIGHT...Mostly cloudy with a 40 percent chance of rain showers and snow showers in the evening, then partly cloudy after midnight. Lows 31 to 37. West winds up to 10 mph. .WEDNESDAY...Partly sunny. Chance of rain showers and slight chance of thunderstorms in the afternoon. Highs 47 to 55. West winds up to 10 mph. Chance of precipitation 40 percent. .WEDNESDAY NIGHT...Rain showers and slight chance of thunderstorms in the evening, then rain and snow likely after midnight. Light snow accumulations. Lows 30 to 36. Chance of precipitation 90 percent. .THURSDAY...Partly sunny. A 50 percent chance of snow and rain in the morning. Highs 48 to 58. .THURSDAY NIGHT THROUGH FRIDAY NIGHT...Partly cloudy. Lows 31 to 41. Highs 54 to 64. .SATURDAY THROUGH SUNDAY...Partly cloudy. Highs 61 to 75. Lows 40 to 46. $$ MTZ323-182200- Canyon Ferry Area- Including the cities of Toston, Townsend, and Winston 1232 PM MDT Mon May 18 2026 .REST OF TODAY...Mostly sunny. Highs in the lower 50s. North winds 5 to 15 mph. .TONIGHT...Partly cloudy. Lows around 30. North winds up to 5 mph shifting to the south after midnight. .TUESDAY...Mostly sunny. A 20 percent chance of rain showers in the afternoon. Highs in the lower 60s. South winds up to 10 mph shifting to the northwest in the afternoon. .TUESDAY NIGHT...Mostly cloudy with a 40 percent chance of rain showers in the evening, then partly cloudy after midnight. Lows in the upper 30s. West winds up to 10 mph. .WEDNESDAY...Partly sunny. Chance of rain showers and slight chance of thunderstorms in the afternoon. Highs in the upper 50s. Southwest winds up to 5 mph shifting to the northwest in the afternoon. Chance of precipitation 40 percent. .WEDNESDAY NIGHT...Rain showers and slight chance of thunderstorms in the evening, then rain likely after midnight. Lows in the upper 30s. Chance of precipitation 80 percent. .THURSDAY...Partly sunny. A 50 percent chance of rain in the morning. Highs around 60. .THURSDAY NIGHT THROUGH FRIDAYNIGHT...Partly cloudy. Lows around 40. Highs in the mid 60s. .SATURDAY...Sunny. Highs in the lower 70s. .SATURDAY NIGHT AND SUNDAY...Partly cloudy. Lows in the mid 40s. Highs in the upper 70s. $$ MTZ324-182200- Missouri Headwaters- Including the cities of Harrison, Three Forks, Willow Creek, Pony, and Whitehall 1232 PM MDT Mon May 18 2026 .REST OF TODAY...Mostly sunny. Highs in the lower 50s. North winds 5 to 10 mph with gusts to around 25 mph. .TONIGHT...Mostly clear. Lows in the upper 20s. North winds up to 5 mph shifting to the southwest after midnight. .TUESDAY...Mostly sunny. A 20 percent chance of rain showers in the afternoon. Highs in the lower 60s. West winds up to 10 mph. .TUESDAY NIGHT...Mostly cloudy with a 20 percent chance of rain showers in the evening, then partly cloudy after midnight. Lows in the mid 30s. West winds up to 10 mph. .WEDNESDAY...Partly sunny. A 20 percent chance of thunderstorms in the afternoon. Highs in the upper 50s. West winds up to 10 mph. .WEDNESDAY NIGHT...Rain showers and slight chance of thunderstorms in the evening, then rain after midnight. Lows in the mid 30s. Chance of precipitation 90 percent. .THURSDAY...Partly sunny. Chance of rain and slight chance of snow in the morning, then slight chance of thunderstorms in the afternoon. Highs in the upper 50s. Chance of precipitation 50 percent. .THURSDAY NIGHT THROUGH FRIDAY NIGHT...Partly cloudy. Lows in the upper 30s. Highs in the mid 60s. .SATURDAY...Sunny. Highs in the mid 70s. .SATURDAY NIGHT...Partly cloudy. Lows in the mid 40s. .SUNDAY...Sunny. Highs in the upper 70s. $$ MTZ325-182200- Madison River Valley- Including the cities of Cameron, Ennis, Jeffers, McAllister, and Norris 1232 PM MDT Mon May 18 2026 .REST OF TODAY...Breezy. Mostly sunny. Highs in the upper 40s. North winds 10 to 25 mph. .TONIGHT...Mostly clear. Lows in the mid 20s. North winds up to 10 mph with gusts to around 25 mph shifting to the south after midnight. .TUESDAY...Not as cool. Mostly sunny. A 20 percent chance of rain showers in the afternoon. Highs in the upper 50s. South winds up to 10 mph shifting to the west in the afternoon. .TUESDAY NIGHT...Not as cool. Mostly cloudy. A 40 percent chance of rain showers in the evening. Lows in the mid 30s. South winds up to 10 mph. .WEDNESDAY...Mostly sunny. A 20 percent chance of thunderstorms in the afternoon. Highs in the upper 50s. South winds up to 10 mph shifting to the west in the afternoon. .WEDNESDAY NIGHT...Rain showers and slight chance of thunderstorms in the evening, then rain after midnight. Lows in the mid 30s. Chance of precipitation 90 percent. .THURSDAY...Partly sunny. Rain and snow likely in the morning, then slight chance of thunderstorms and snow showers in the afternoon. Highs in the upper 50s. Chance of precipitation 70 percent. .THURSDAY NIGHT AND FRIDAY...Partly cloudy. Lows in the mid 30s. Highs in the mid 60s. .FRIDAY NIGHT AND SATURDAY...Partly cloudy. Lows in the upper 30s. Highs in the lower 70s. .SATURDAY NIGHT...Mostly cloudy in the evening then becoming partly cloudy. Lows in the mid 40s. .SUNDAY...Sunny. Highs in the upper 70s. $$ MTZ326-182200- Gallatin Valley- Including the cities of Bozeman and Gallatin Gateway 1232 PM MDT Mon May 18 2026 .REST OF TODAY...Mostly sunny. A 20 percent chance of snow showers early in the afternoon. Highs in the upper 40s. North winds 5 to 10 mph. .TONIGHT...Mostly clear. Lows in the mid 20s. Northeast winds up to 5 mph shifting to the south after midnight. .TUESDAY...Not as cool. Mostly sunny. Highs in the lower 60s. South winds up to 5 mph shifting to the west in the afternoon. .TUESDAY NIGHT...Not as cool. Mostly cloudy with a 20 percent chance of rain showers in the evening, then partly cloudy after midnight. Lows in the mid 30s. East winds up to 5 mph shifting to the south after midnight. .WEDNESDAY...Partly sunny. A 20 percent chance of thunderstorms in the afternoon. Highs in the upper 50s. Southwest winds up to 5 mph shifting to the west in the afternoon. .WEDNESDAY NIGHT...Rain showers and slight chance of thunderstorms in the evening, then rain after midnight. Lows in the mid 30s. Chance of precipitation 90 percent. .THURSDAY...Partly sunny. Rain and snow likely in the morning, then chance of rain showers and slight chance of thunderstorms in the afternoon. Highs in the upper 50s. Chance of precipitation 70 percent. .THURSDAY NIGHT THROUGH FRIDAY NIGHT...Partly cloudy. Lows in the upper 30s. Highs in the mid 60s. .SATURDAY...Sunny. Highs in the mid 70s. .SATURDAY NIGHT...Partly cloudy. Lows in the mid 40s. .SUNDAY...Sunny. Highs in the upper 70s. && TEMPERATURE / PRECIPITATION Bozeman Airport 51 24 62 / 10 0 0 Bozeman MSU 48 25 60 / 20 0 0 $$ MTZ330-182200- Gallatin and Madison County Mountains and Centennial Mountains- Including the cities of Big Sky, West Yellowstone, Targhee Pass, and Raynolds Pass 1232 PM MDT Mon May 18 2026 .REST OF TODAY...Mostly sunny. A 20 percent chance of snow showers early in the afternoon. Highs 34 to 44. North winds 10 to 15 mph with gusts to around 40 mph. .TONIGHT...Mostly clear. Lows 16 to 22. North winds up to 10 mph with gusts to around 30 mph shifting to the southwest after midnight. .TUESDAY...Not as cool. Mostly sunny. A 20 percent chance of snow showers in the afternoon. Highs 44 to 54. West winds up to 15 mph. .TUESDAY NIGHT...Mostly cloudy with a 20 percent chance of rain showers and snow showers in the evening, then partly cloudy after midnight. Lows 27 to 33. Southwest winds up to 10 mph with gusts to around 25 mph. .WEDNESDAY...Partly sunny. Chance of rain showers, snow showers and slight chance of thunderstorms in the afternoon. Highs 43 to 53. Southwest winds up to 15 mph. Gusts up to 30 mph in the afternoon. Chance of precipitation 50 percent. .WEDNESDAY NIGHT...Rain showers, snow and slight chance of thunderstorms in the evening, then snow and rain after midnight. Light snow accumulations. Lows 29 to 35. Chance of precipitation near 100 percent. .THURSDAY...Partly sunny. Snow likely and chance of rain in the morning, then slight chance of thunderstorms and snow showers in the afternoon. Light snow accumulations. Highs 43 to 53. Chance of precipitation 70 percent. .THURSDAY NIGHT THROUGH FRIDAY NIGHT...Partly cloudy. Lows 27 to 37. Highs 49 to 61. .SATURDAY AND SATURDAY NIGHT...Partly cloudy. Highs 58 to 68. Lows 36 to 42. .SUNDAY...Sunny. Highs 61 to 73. && TEMPERATURE / PRECIPITATION West Yellowstone 44 15 54 / 10 0 10 $$ MTZ327-182200- Northwest Beaverhead County- Including the cities of Dewey, Wisdom, Wise River, Big Hole Pass, and Chief Joseph Pass 1232 PM MDT Mon May 18 2026 .REST OF TODAY...Not as cool. Mostly sunny. Highs 38 to 48. North winds 5 to 15 mph with gusts to around 30 mph. .TONIGHT...Partly cloudy. Lows in the lower 20s. North winds up to 10 mph with gusts to around 25 mph shifting to the west after midnight. .TUESDAY...Not as cool. Mostly sunny. A 20 percent chance of rain showers and snow showers in the afternoon. Highs 46 to 56. West winds up to 10 mph with gusts to around 25 mph. .TUESDAY NIGHT...Partly cloudy. A 20 percent chance of rain showers and snow showers in the evening. Lows around 30. West winds up to 10 mph with gusts to around 25 mph. .WEDNESDAY...Partly sunny. A 20 percent chance of thunderstorms in the afternoon. Highs 45 to 55. West winds up to 5 mph increasing to 5 to 15 mph in the afternoon. .WEDNESDAY NIGHT...Mostlycloudy. Chance of rain showers, snow and slight chance of thunderstorms in the evening, then snow likely and chance of rain after midnight. Lows in the lower 30s. Chance of precipitation 70 percent. .THURSDAY...Mostly sunny. Chance of snow and slight chance of rain in the morning. Highs 47 to 57. Chance of precipitation 40 percent. .THURSDAY NIGHT THROUGH FRIDAY NIGHT...Partly cloudy. Lows in the lower 30s. Highs 53 to 63. .SATURDAY AND SATURDAY NIGHT...Partly cloudy. Highs 59 to 69. Lows in the upper 30s. .SUNDAY...Sunny. Highs 62 to 72. $$ MTZ328-182200- Beaverhead and Western Madison below 6000ft- Including the cities of Bannack, Dillon, Glen, and Waterloo 1232 PM MDT Mon May 18 2026 .REST OF TODAY...Mostly sunny. Highs 46 to 52. Northeast winds 10 to 15 mph with gusts to around 40 mph. .TONIGHT...Mostly clear. Lows in the mid 20s. North winds up to 10 mph with gusts to around 25 mph shifting to the southwest after midnight. .TUESDAY...Not as cool. Mostly sunny. Highs 56 to 62. Southwest winds up to 10 mph. .TUESDAY NIGHT...Mostly cloudy with a 20 percent chance of rain showers in the evening, then partly cloudy after midnight. Lows in the mid 30s. West winds up to 10 mph. .WEDNESDAY...Partly sunny. Highs 55 to 61. West winds up to 10 mph. .WEDNESDAY NIGHT...Rain showers likely and slight chance of thunderstorms in the evening, then rain likely after midnight. Lows in the mid 30s. Chance of precipitation 70 percent. .THURSDAY...Partly sunny. Chance of rain and snow in the morning, then slight chance of thunderstorms in the afternoon. Highs 55 to 61. Chance of precipitation 50 percent. .THURSDAY NIGHT THROUGH FRIDAY NIGHT...Partly cloudy. Lows in the mid 30s. Highs 62 to 68. .SATURDAY AND SATURDAY NIGHT...Partly cloudy. Highs 69 to 75. Lows in the lower 40s. .SUNDAY...Sunny. Highs 73 to 79. && TEMPERATURE / PRECIPITATION Dillon 51 25 61 / 0 0 10 $$ MTZ329-182200- Ruby Mountains and Southern Beaverhead Mountains- Including the city of Monida Pass 1232 PM MDT Mon May 18 2026 .REST OF TODAY...Breezy. Mostly sunny. Highs 39 to 47. North winds 15 to 25 mph with gusts to around 50 mph. .TONIGHT...Mostly clear. Lows in the lower 20s. North winds 5 to 10 mph with gusts to around 30 mph shifting to the southwest after midnight. .TUESDAY...Not as cool. Mostly sunny. Highs 47 to 55. West winds up to 15 mph. .TUESDAY NIGHT...Mostly cloudy with a 20 percent chance of rain showers and snow showers in the evening, then partly cloudy after midnight. Lows in the lower 30s. Southwest winds up to 10 mph. Gusts up to 25 mph in the evening. .WEDNESDAY...Mostly sunny. Highs 48 to 56. Southwest winds up to 5 mph shifting to the west 5 to 15 mph in the afternoon. .WEDNESDAY NIGHT...Rain and snow likely. Light snow accumulations. Lows in the lower 30s. Chance of precipitation 70 percent. .THURSDAY...Partly sunny. Chance of snow and rain in the morning, then slight chance of thunderstorms and snow showers in the afternoon. Highs 48 to 56. Chance of precipitation 50 percent. .THURSDAY NIGHT THROUGH FRIDAY NIGHT...Partly cloudy. Lows in the lower 30s. Highs 54 to 62. .SATURDAY...Sunny. Highs 62 to 68. .SATURDAY NIGHT...Mostly cloudy in the evening then becoming partly cloudy. Lows around 40. .SUNDAY...Sunny. Highs 65 to 73. $$