FPUS55 KTFX 180632 ZFPTFX Zone Forecast Product for Central and Southwest Montana National Weather Service Great Falls MT 1232 AM MDT Mon May 18 2026 Spot temperatures and probabilities of measurable precipitation are for .TONIGHT THROUGH TODAY..., Tuesday, Tuesday night, and Wednesday. MTZ301-191000- East Glacier Park Region- Including the cities of East Glacier Park, Kiowa, Babb, Saint Mary, Marias Pass, and Logan Pass 1232 AM MDT Mon May 18 2026 .REST OF TONIGHT...Patchy fog after midnight. Slight chance of rain and snow in the evening. Partly cloudy with chance of rain showers, snow showers and slight chance of thunderstorms. Highs 38 to 48. Lows 19 to 33. Southwest winds up to 15 mph with gusts to around 35 mph. Chance of precipitation 50 percent. .TUESDAY...Breezy. Not as cool. Partly sunny. A 20 percent chance of rain and snow in the afternoon. Highs 43 to 55. West winds 10 to 25 mph with gusts to around 40 mph. .TUESDAY NIGHT...Partly cloudy. A 20 percent chance of rain and snow after midnight. Lows 32 to 38. Southwest winds 10 to 20 mph. Gusts up to 40 mph decreasing to 30 mph after midnight. .WEDNESDAY...Rain and snow likely in the morning, then rain and snow in the afternoon. Light snow accumulations. Snow level 6700 feet. Highs 42 to 52. Northwest winds 5 to 10 mph. Chance of precipitation 80 percent. .WEDNESDAY NIGHT...Mostly cloudy with chance of rain and snow in the evening, then partly cloudy with slight chance of rain and snow after midnight. Lows 29 to 35. Northwest winds up to 10 mph. Chance of precipitation 50 percent. .THURSDAY...Not as cool. Mostly sunny. Highs 46 to 58. .THURSDAY NIGHT...Partly cloudy in the evening, then mostly cloudy with a 20 percent chance of rain after midnight. Lows 33 to 39. .FRIDAY...Partly sunny. Slight chance of rain in the morning, then chance of rain in the afternoon. Highs 50 to 60. Chance of rain 40 percent. .FRIDAY NIGHT THROUGH SUNDAY NIGHT...Breezy. Partly cloudy. Lows 36 to 44. Highs 54 to 64. .MEMORIAL DAY...Breezy. Mostly sunny with a 20 percent chance of rain and snow. Highs 53 to 63. $$ MTZ307-191000- Southern Rocky Mountain Front- Including the city of Rogers Pass 1232 AM MDT Mon May 18 2026 .REST OF TONIGHT...Patchy fog after midnight. Slight chance of rain early in the evening. Slight chance of snow in the evening. Partly cloudy with chance of snow showers, rain showers and slight chance of thunderstorms. Highs 37 to 45. Lows 18 to 29. West winds up to 10 mph with gusts to around 30 mph. Chance of precipitation 50 percent. .TUESDAY...Not as cool. Mostly sunny. A 20 percent chance of rain and snow in the afternoon. Highs 43 to 53. West winds 5 to 15 mph with gusts to around 35 mph. .TUESDAY NIGHT...Partly cloudy. Lows 29 to 35. West winds 5 to 15 mph with gusts to around 35 mph. .WEDNESDAY...Mostly sunny with slight chance of rain and snow in the morning, then mostly cloudy with rain showers, snow likely and slight chance of thunderstorms in the afternoon. Snow level 7000 feet. Highs 43 to 55. West winds 5 to 10 mph. Chance of precipitation 70 percent. .WEDNESDAY NIGHT...Mostly cloudy. Rain and snow likely in the evening, then chance of snow and slight chance of rain after midnight. Light snow accumulations. Lows 28 to 34. Northwest winds up to 10 mph with gusts to around 25 mph. Chance of precipitation 70 percent. .THURSDAY...Mostly sunny. A 20 percent chance of snow in the morning. Highs 45 to 57. .THURSDAY NIGHT...Partly cloudy in the evening then becoming mostly cloudy. Lows 31 to 37. .FRIDAY...Partly sunny with a 20 percent chance of rain. Highs 51 to 61. .FRIDAY NIGHT THROUGH SATURDAY NIGHT...Partly cloudy. Lows 33 to 43. Highs 54 to 66. .SUNDAY...Sunny. Highs 55 to 67. .SUNDAY NIGHT...Partly cloudy. Lows 37 to 43. .MEMORIAL DAY...Mostly sunny. A 20 percent chance of rain in the afternoon. Highs 54 to 66. $$ MTZ302-191000- Northern High Plains- Including the cities of Browning, Heart Butte, and Dupuyer 1232 AM MDT Mon May 18 2026 .REST OF TONIGHT...Warmer. Patchy fog after midnight. Partly cloudy with a 20 percent chance of rain and thunderstorms. Highs in the lower 50s. Lows 24 to 33. Southwest winds up to 15 mph with gusts to around 30 mph. .TUESDAY...Breezy. Mostly sunny. A 20 percent chance of rain in the afternoon. Highs around 60. West winds 15 to 25 mph with gusts to around 40 mph. .TUESDAY NIGHT...Breezy. Partly cloudy. Lows in the upper 30s. West winds 10 to 25 mph decreasing to 10 to 15 mph after midnight. .WEDNESDAY...Rain likely in the morning, then rain in the afternoon. Highs in the mid 50s. Northwest winds 5 to 15 mph. Chance of rain 80 percent. .WEDNESDAY NIGHT...Mostly cloudy with chance of rain in the evening, then partly cloudy with slight chance of rain after midnight. Lows in the mid 30s. Northwest winds 5 to 15 mph. Chance of rain 50 percent. .THURSDAY...Mostly sunny. Highs in the lower 60s. .THURSDAY NIGHT...Partly cloudy in the evening then becoming mostly cloudy. Lows around 40. .FRIDAY...Partly sunny. Slight chance of rain in the morning, then chance of rain in the afternoon. Highs in the mid 60s. Chance of rain 40 percent. .FRIDAY NIGHT THROUGH MEMORIAL DAY...Breezy. Partly cloudy. Lows in the lower 40s. Highs around 70. $$ MTZ308-191000- Southern High Plains- Including the cities of Bynum, Choteau, and Pendroy 1232 AM MDT Mon May 18 2026 .REST OF TONIGHT...Warmer. Patchy fog after midnight. Slight chance of rain early in the evening. Partly cloudy with chance of rain showers and slight chance of thunderstorms. Highs in the lower 50s. Lows 26 to 33. Southwest winds up to 10 mph with gusts to around 30 mph. Chance of precipitation 50 percent. .TUESDAY...Mostly sunny. A 20 percent chance of rain in the afternoon. Highs in the lower 60s. West winds 5 to 15 mph with gusts to around 35 mph. .TUESDAY NIGHT...Partly cloudy. Lows in the upper 30s. West winds 5 to 15 mph with gusts to around 30 mph. .WEDNESDAY...Partly sunny. Slight chance of rain in the morning, then rain showers likely and slight chance of thunderstorms in the afternoon. Highs in the upper 50s. West winds 5 to 10 mph shifting to the north in the afternoon. Chance of precipitation 70 percent. .WEDNESDAY NIGHT...Mostly cloudy. Rain likely in the evening, then chance of rain after midnight. Lows in the mid 30s. Northwest winds up to 10 mph. Chance of rain 70 percent. .THURSDAY AND THURSDAY NIGHT...Partly cloudy. Highs in the lower 60s. Lows in the lower 40s. .FRIDAY...Mostly sunny. A 20 percent chance of rain in the afternoon. Highs in the upper 60s. .FRIDAY NIGHT THROUGH MEMORIAL DAY...Partly cloudy. Lows 43 to 48. Highs in the mid 70s. $$ MTZ303-191000- Eastern Glacier, Western Toole, and Central Pondera- Including the cities of Cut Bank, Ethridge, and Santa Rita 1232 AM MDT Mon May 18 2026 .REST OF TONIGHT...Warmer. Patchy fog after midnight. Partly cloudy with a 20 percent chance of rain. Highs in the mid 50s. Lows 24 to 32. Southwest winds up to 10 mph. .TUESDAY...Partly sunny. A 20 percent chance of rain in the afternoon. Highs in the lower 60s. West winds 5 to 20 mph with gusts to around 35 mph. .TUESDAY NIGHT...Not as cool. Partly cloudy. Lows in the upper 30s. West winds 10 to 20 mph. .WEDNESDAY...Mostly cloudy. Chance of rain in the morning, then rain likely in the afternoon. Highs in the upper 50s. Northwest winds 10 to 15 mph with gusts to around 30 mph. Chance of rain 70 percent. .WEDNESDAY NIGHT...Mostly cloudy with a 50 percent chance of rain in the evening, then partly cloudy after midnight. Lows in the mid 30s. Northwest winds 5 to 15 mph. .THURSDAY...Mostly sunny. Highs in the mid 60s. .THURSDAY NIGHT...Partly cloudy in the evening then becoming mostly cloudy. Lows around 40. .FRIDAY...Partly sunny. A 20 percent chance of rain in the afternoon. Highs in the upper 60s. .FRIDAY NIGHT THROUGH MEMORIAL DAY...Breezy. Partly cloudy. Lows in the lower 40s. Highs in the lower 70s. && TEMPERATURE / PRECIPITATION Cut Bank 27 63 38 57 / 20 20 10 60 $$ MTZ304-191000- Eastern Toole and Liberty- Including the cities of Devon, Shelby, Chester, Galata, Joplin, Lothair, and Whitlash 1232 AM MDT Mon May 18 2026 .REST OF TONIGHT...Warmer. Partly cloudy. Patchy fog after midnight. Highs in the lower 50s. Lows 25 to 32. South winds up to 10 mph with gusts to around 30 mph. .TUESDAY...Mostly sunny in the morning, then mostly cloudy with a 20 percent chance of rain in the afternoon. Highs in the lower 60s. Southwest winds 5 to 15 mph. .TUESDAY NIGHT...Not as cool. Mostly cloudy in the evening then becoming partly cloudy. Lows around 40. West winds 5 to 15 mph. .WEDNESDAY AND WEDNESDAY NIGHT...Mostly cloudy. A 50 percent chance of rain. Highs 56 to 62. Lows in the mid 30s. Northwest winds 5 to 15 mph with gusts to around 30 mph. .THURSDAY AND THURSDAY NIGHT...Partly cloudy. Highs in the mid 60s. Lows around 40. .FRIDAY...Partly sunny. Highs in the upper 60s. .FRIDAY NIGHT THROUGH MEMORIAL DAY...Partly cloudy. Lows 42 to 47. Highs 72 to 78. $$ MTZ305-191000- Hill County- Including the city of Havre 1232 AM MDT Mon May 18 2026 .REST OF TONIGHT...Partly cloudy. Patchy fog early in the morning. Highs in the mid 50s. Lows in the upper 20s. Southeast winds 5 to 10 mph. .TUESDAY...Warmer. Mostly sunny. A 50 percent chance of rain in the afternoon. Highs in the mid 60s. Southwest winds 5 to 15 mph. .TUESDAY NIGHT...Not as cool. Mostly cloudy. Lows in the lower 40s. Southwest winds 5 to 10 mph. .WEDNESDAY...Partly sunny. Slight chance of rain in the morning, then chance of rain in the afternoon. Highs in the lower 60s. Northwest winds 5 to 15 mph. Chance of rain 50 percent. .WEDNESDAY NIGHT...Mostly cloudy with chance of rain in the evening, then partly cloudy with slight chance of rain after midnight. Lows in the upper 30s. Northwest winds 5 to 15 mph. Chance of rain 40 percent. .THURSDAY AND THURSDAY NIGHT...Partly cloudy. Highs in the mid 60s. Lows in the upper 30s. .FRIDAY...Partly sunny. Highs in the upper 60s. .FRIDAY NIGHT THROUGH MEMORIAL DAY...Partly cloudy. Lows 42 to 47. Highs in the upper 70s. && TEMPERATURE / PRECIPITATION Havre 26 66 41 64 / 10 50 10 40 $$ MTZ306-191000- Northern Blaine County- Including the cities of Chinook, Zurich, Harlem, Hogeland, and Fort Belknap 1232 AM MDT Mon May 18 2026 .REST OF TONIGHT...Partly cloudy. Highs 46 to 52. Lows 24 to 29. Southeast winds 5 to 15 mph. .TUESDAY...Not as cool. Mostly sunny. Highs in the lower 60s. South winds 5 to 15 mph. .TUESDAY NIGHT...Not as cool. Mostly cloudy. Lows around 40. Southwest winds 5 to 15 mph. Gusts up to 30 mph in the evening. .WEDNESDAY...Partly sunny. A 50 percent chance of rain in the afternoon. Highs in the lower 60s. West winds 5 to 15 mph shifting to the northwest 15 to 20 mph with gusts to around 35 mph in the afternoon. .WEDNESDAY NIGHT...Mostly cloudy. Slight chance of rain in the evening, then chance of rain after midnight. Lows in the upper 30s. Northwest winds 5 to 15 mph. Gusts up to 30 mph in the evening. Chance of rain 30 percent. .THURSDAY THROUGH FRIDAY NIGHT...Partly cloudy. Highs in the mid 60s. Lows in the lower 40s. .SATURDAY...Mostly sunny. Highs in the mid 70s. .SATURDAY NIGHT...Partly cloudy. Slight chance of thunderstorms in the evening, then slight chance of rain after midnight. Lows in the mid 40s. Chance of precipitation 20 percent. .SUNDAY AND SUNDAY NIGHT...Breezy. Partly cloudy. Highs in the upper 70s. Lows in the upper 40s. .MEMORIAL DAY...Breezy, sunny. Highs in the upper 70s. $$ MTZ309-191000- Eastern Pondera and Eastern Teton- Including the cities of Brady, Conrad, and Ledger 1232 AM MDT Mon May 18 2026 .REST OF TONIGHT...Warmer. Partly cloudy. Patchy fog after midnight. Highs in the mid 50s. Lows in the mid 20s. Southwest winds up to 10 mph. .TUESDAY...Mostly sunny. A 20 percent chance of rain in the afternoon. Highs in the mid 60s. West winds 5 to 15 mph. .TUESDAY NIGHT...Not as cool. Partly cloudy. Lows in the upper 30s. West winds 5 to 15 mph. .WEDNESDAY...Partly sunny. Slight chance of rain in the morning, then rain likely in the afternoon. Highs around 60. Northwest winds 5 to 10 mph. Chance of rain 70 percent. .WEDNESDAY NIGHT...Mostly cloudy. Chance of rain in the evening, then slight chance of rain after midnight. Lows in the mid 30s. Northwest winds 5 to 10 mph. Chance of rain 50 percent. .THURSDAY AND THURSDAY NIGHT...Partly cloudy. Highs in the mid 60s. Lows in the upper 30s. .FRIDAY...Partly sunny. A 20 percent chance of rain in the afternoon. Highs in the upper 60s. .FRIDAY NIGHT THROUGH MEMORIAL DAY...Partly cloudy. Lows 41 to 46. Highs in the mid 70s. $$ MTZ310-191000- Western and Central Chouteau County- Including the cities of Floweree, Carter, and Fort Benton 1232 AM MDT Mon May 18 2026 .REST OF TONIGHT...Warmer. Partly cloudy. Patchy fog after midnight. A 20 percent chance of rain and snow. Highs in the lower 50s. Lows 26 to 31. South winds 5 to 10 mph with gusts to around 30 mph. .TUESDAY...Warmer. Sunny in the morning, then partly sunny with a 20 percent chance of rain in the afternoon. Highs in the mid 60s. Southwest winds 5 to 15 mph. .TUESDAY NIGHT...Not as cool. Mostly cloudy in the evening then becoming partly cloudy. Lows in the lower 40s. Southwest winds 5 to 15 mph. .WEDNESDAY...Partly sunny. Slight chance of rain in the morning, then chance of rain showers and slight chance of thunderstorms in the afternoon. Highs in the lower 60s. Northwest winds 5 to 15 mph. Chance of precipitation 50 percent. .WEDNESDAY NIGHT...Mostly cloudy with a 50 percent chance of rain. Lows in the upper 30s. North winds 5 to 15 mph shifting to the west 5 to 10 mph after midnight. .THURSDAY...Mostly sunny. A 20 percent chance of rain in the morning. Highs in the mid 60s. .THURSDAY NIGHT THROUGH FRIDAY NIGHT...Partly cloudy. Lows in the lower 40s. Highs in the upper 60s. .SATURDAY THROUGH MEMORIAL DAY...Partly cloudy. Highs in the upper 70s. Lows in the upper 40s. $$ MTZ311-191000- Bears Paw Mountains and Southern Blaine- Including the city of Rocky Boy 1232 AM MDT Mon May 18 2026 .REST OF TONIGHT...Partly cloudy. Highs 46 to 52. Lows 26 to 31. Southeast winds 5 to 15 mph with gusts to around 30 mph. .TUESDAY...Warmer. Mostly sunny. A 20 percent chance of rain in the afternoon. Highs 59 to 65. Southwest winds 5 to 15 mph. .TUESDAY NIGHT...Not as cool. Mostly cloudy. Lows in the lower 40s. Southwest winds up to 15 mph. .WEDNESDAY...Partly sunny. Chance of rain showers and slight chance of thunderstorms in the afternoon. Highs 58 to 64. West winds 5 to 15 mph with gusts to around 30 mph. Chance of precipitation 50 percent. .WEDNESDAY NIGHT...Mostly cloudy. Chance of rain in the evening, then slight chance of rain after midnight. Lows in the upper 30s. Northwest winds up to 15 mph. Gusts up to 30 mph in the evening. Chance of rain 50 percent. .THURSDAY...Mostly sunny with a 20 percent chance of rain. Highs 59 to 65. .THURSDAY NIGHT...Partly cloudy. Lows in the lower 40s. .FRIDAY...Mostly sunny. A 20 percent chance of rain in the afternoon. Highs 64 to 70. .FRIDAY NIGHT THROUGH SUNDAY NIGHT...Partly cloudy. Lows 45 to 50. Highs 70 to 79. .MEMORIAL DAY...Sunny. Highs 73 to 79. $$ MTZ312-191000- Cascade County below 5000ft- Including the city of Great Falls 1232 AM MDT Mon May 18 2026 .REST OF TONIGHT...Warmer. Partly cloudy. Patchy fog after midnight. A 20 percent chance of snow. Highs 48 to 54. Lows in the upper 20s. South winds up to 10 mph. .TUESDAY...Not as cool. Mostly sunny. A 20 percent chance of rain in the afternoon. Highs in the lower 60s. Southwest winds 5 to 15 mph. .TUESDAY NIGHT...Not as cool. Partly cloudy. Lows around 40. Southwest winds 5 to 10 mph. .WEDNESDAY...Partly sunny. Slight chance of rain in the morning, then rain showers likely and slight chance of thunderstorms in the afternoon. Highs around 60. West winds 5 to 10 mph shifting to the northwest in the afternoon. Chance of precipitation 60 percent. .WEDNESDAY NIGHT...Mostly cloudy. Rain likely in the evening, then chance of rain after midnight. Lows in the upper 30s. North winds 5 to 10 mph shifting to the west after midnight. Chance of rain 70 percent. .THURSDAY...Mostly sunny. A 20 percent chance of rain in the morning. Highs in the lower 60s. .THURSDAY NIGHT...Partly cloudy. Lows in the lower 40s. .FRIDAY...Partly sunny. A 20 percent chance of rain in the afternoon. Highs in the upper 60s. .FRIDAY NIGHT THROUGH MEMORIAL DAY...Partly cloudy. Lows 44 to 49. Highs in the mid 70s. && TEMPERATURE / PRECIPITATION Great Falls Arpt 28 63 40 61 / 10 30 10 60 $$ MTZ313-191000- Judith Basin County and Judith Gap- Including the cities of Raynesford, Geyser, Stanford, Windham, Benchland, Hobson, and Moccasin 1232 AM MDT Mon May 18 2026 .REST OF TONIGHT...Partly cloudy. A 20 percent chance of snow. Highs in the mid 40s. Lows in the mid 20s. Southwest winds 5 to 15 mph with gusts to around 35 mph. .TUESDAY...Not as cool. Sunny in the morning, then partly sunny with a 20 percent chance of rain in the afternoon. Highs in the upper 50s. West winds 5 to 10 mph. .TUESDAY NIGHT...Not as cool. Partly cloudy. Lows in the upper 30s. Southwest winds up to 15 mph. .WEDNESDAY AND WEDNESDAY NIGHT...Mostly cloudy. Rain showers likely and slight chance of thunderstorms. Highs in the upper 50s. Lows in the mid 30s. West winds 5 to 15 mph. Chance of precipitation 70 percent. .THURSDAY...Partly sunny. Chance of rain in the morning, then slight chance of thunderstorms in the afternoon. Highs in the upper 50s. Chance of precipitation 40 percent. .THURSDAY NIGHT...Partly cloudy. Lows in the upper 30s. .FRIDAY...Mostly sunny. A 20 percent chance of thunderstorms in the afternoon. Highs in the mid 60s. .FRIDAY NIGHT AND SATURDAY...Partly cloudy. Lows in the lower 40s. Highs in the lower 70s. .SATURDAY NIGHT THROUGH MEMORIAL DAY...Partly cloudy. Lows in the upper 40s. Highs in the mid 70s. $$ MTZ314-191000- Fergus County below 4500ft- Including the cities of Hilger and Lewistown 1232 AM MDT Mon May 18 2026 .REST OF TONIGHT...Partly cloudy. A 20 percent chance of snow. Highs 45 to 51. Lows 23 to 32. South winds up to 15 mph with gusts to around 35 mph. .TUESDAY...Not as cool. Mostly sunny. A 20 percent chance of rain in the afternoon. Highs in the lower 60s. Southwest winds up to 10 mph. .TUESDAY NIGHT...Not as cool. Mostly cloudy in the evening then becoming partly cloudy. Lows around 40. Southwest winds 5 to 10 mph. .WEDNESDAY...Partly sunny. Chance of rain showers and slight chance of thunderstorms in the afternoon. Highs 60 to 66. West winds 5 to 15 mph with gusts to around 30 mph. Chance of precipitation 50 percent. .WEDNESDAY NIGHT...Mostly cloudy. Rain likely in the evening, then chance of rain after midnight. Lows in the upper 30s. Northwest winds 5 to 15 mph. Chance of rain 70 percent. .THURSDAY...Mostly sunny with a 20 percent chance of rain. Highs 59 to 65. .THURSDAY NIGHT...Partly cloudy. Lows in the lower 40s. .FRIDAY...Mostly sunny. A 20 percent chance of thunderstorms in the afternoon. Highs 65 to 71. .FRIDAY NIGHT THROUGH SUNDAY NIGHT...Partly cloudy. Lows 44 to 50. Highs 71 to 80. .MEMORIAL DAY...Sunny. Highs 75 to 81. && TEMPERATURE / PRECIPITATION Lewistown 25 59 36 59 / 40 30 0 50 $$ MTZ315-191000- Upper Blackfoot and MacDonald Pass- Including the cities of Marysville, Lincoln, Flesher Pass, and MacDonald Pass 1232 AM MDT Mon May 18 2026 .REST OF TONIGHT...Patchy fog after midnight. Chance of rain early in the afternoon, then slight chance of rain early in the evening. Partly cloudy with chance of snow, rain showers and slight chance of thunderstorms. Highs 41 to 49. Lows 21 to 28. Southwest winds up to 10 mph. Chance of precipitation 50 percent. .TUESDAY...Not as cool. Mostly sunny. A 20 percent chance of rain in the afternoon. Highs 49 to 57. West winds 5 to 15 mph. .TUESDAY NIGHT...Partly cloudy. Lows in the mid 30s. West winds up to 15 mph. Gusts up to 30 mph in the evening. .WEDNESDAY...Mostly sunny. Chance of rain showers and slight chance of thunderstorms in the afternoon. Highs 49 to 59. West winds up to 15 mph. Chance of precipitation 50 percent. .WEDNESDAY NIGHT...Mostly cloudy. Rain showers, snow likely and slight chance of thunderstorms in the evening, then chance of rain and snow after midnight. Lows in the mid 30s. Northwest winds up to 10 mph. Gusts up to 25 mph in the evening. Chance of precipitation 70 percent. .THURSDAY...Mostly sunny. A 20 percent chance of rain and snow in the morning. Highs 50 to 60. .THURSDAY NIGHT THROUGH FRIDAY NIGHT...Partly cloudy. Lows in the upper 30s. Highs 57 to 65. .SATURDAY AND SATURDAY NIGHT...Partly cloudy. Highs 62 to 70. Lows in the lower 40s. .SUNDAY...Sunny. Highs 63 to 71. .SUNDAY NIGHT AND MEMORIAL DAY...Partly cloudy. Lows in the mid 40s. Highs 63 to 71. $$ MTZ316-191000- Gates of the Mountains- Including the cities of Canyon Creek, Wolf Creek, and Craig 1232 AM MDT Mon May 18 2026 .REST OF TONIGHT...Warmer. Patchy fog after midnight. Partly cloudy with a 20 percent chance of rain and snow. Highs 47 to 53. Lows in the upper 20s. Southwest winds up to 10 mph with gusts to around 25 mph. .TUESDAY...Not as cool. Mostly sunny. Slight chance of rain and snow in the morning, then slight chance of rain in the afternoon. Highs 56 to 62. Southwest winds 5 to 15 mph. Chance of precipitation 20 percent. .TUESDAY NIGHT...Partly cloudy. Lows in the upper 30s. Southwest winds up to 15 mph. .WEDNESDAY...Mostly sunny in the morning, then mostly cloudy with rain showers likely and slight chance of thunderstorms in the afternoon. Highs 55 to 63. Southwest winds up to 10 mph shifting to the northwest in the afternoon. Gusts up to 25 mph. Chance of precipitation 60 percent. .WEDNESDAY NIGHT...Mostly cloudy. Rain likely in the evening, then chance of rain and snow after midnight. Lows in the upper 30s. Northwest winds up to 10 mph. Gusts up to 25 mph in the evening. Chance of precipitation 70 percent. .THURSDAY AND THURSDAY NIGHT...Partly cloudy. Highs 56 to 64. Lows around 40. .FRIDAY...Mostly sunny. A 20 percent chance of rain in the afternoon. Highs 61 to 69. .FRIDAY NIGHT THROUGH MEMORIAL DAY...Partly cloudy. Lows 42 to 47. Highs 67 to 77. $$ MTZ317-191000- Little Belt and Highwood Mountains- Including the cities of Monarch, Neihart, and Kings Hill Pass 1232 AM MDT Mon May 18 2026 .REST OF TONIGHT...Partly cloudy. Patchy fog after midnight. A 50 percent chance of snow. Highs 36 to 44. Lows 20 to 28. Southwest winds 5 to 15 mph with gusts to around 45 mph. .TUESDAY...Not as cool. Mostly sunny. Slight chance of snow in the morning, then slight chance of rain and snow in the afternoon. Highs 48 to 56. West winds 5 to 15 mph. Chance of precipitation 20 percent. .TUESDAY NIGHT...Partly cloudy. Lows 31 to 39. Southwest winds 5 to 10 mph with gusts to around 25 mph. .WEDNESDAY...Mostly sunny in the morning, then mostly cloudy with rain showers likely and slight chance of thunderstorms in the afternoon. Highs 48 to 56. West winds 5 to 15 mph with gusts to around 30 mph. Chance of precipitation 70 percent. .WEDNESDAY NIGHT...Mostly cloudy. Rain showers, snow likely and slight chance of thunderstorms in the evening, then chance of rain and snow after midnight. Light snow accumulations. Lows 30 to 36. Northwest winds up to 10 mph with gusts to around 25 mph. Chance of precipitation 70 percent. .THURSDAY...Partly sunny. Chance of rain and snow in the morning, then chance of rain showers, snow showers and slight chance of thunderstorms in the afternoon. Highs 48 to 56. Chance of precipitation 40 percent. .THURSDAY NIGHT...Partly cloudy in the evening then becoming mostly cloudy. Lows 33 to 39. .FRIDAY...Partly sunny. Chance of rain showers and slight chance of thunderstorms in the afternoon. Highs 55 to 61. Chance of precipitation 40 percent. .FRIDAY NIGHT THROUGH SUNDAY NIGHT...Partly cloudy. Lows 36 to 49. Highs 60 to 70. .MEMORIAL DAY...Mostly sunny. A 20 percent chance of thunderstorms in the afternoon. Highs 64 to 70. $$ MTZ318-191000- Snowy and Judith Mountains- 1232 AM MDT Mon May 18 2026 .REST OF TONIGHT...Partly cloudy. A 50 percent chance of snow. Highs 35 to 43. Lows 19 to 27. South winds up to 20 mph with gusts to around 45 mph. .TUESDAY...Not as cool. Sunny in the morning, then partly sunny with a 50 percent chance of rain in the afternoon. Highs 49 to 57. Southwest winds 5 to 10 mph with gusts to around 25 mph. .TUESDAY NIGHT...Not as cool. Mostly cloudy in the evening then becoming partly cloudy. Lows in the mid 30s. Southwest winds up to 10 mph with gusts to around 25 mph. .WEDNESDAY...Partly sunny. Chance of rain showers and slight chance of thunderstorms in the afternoon. Highs 50 to 58. West winds 5 to 15 mph with gusts to around 30 mph. Chance of precipitation 50 percent. .WEDNESDAY NIGHT...Rain showers likely and slight chance of thunderstorms in the evening, then rain and snow likely after midnight. Light snow accumulations. Lows in the mid 30s. Northwest winds 5 to 15 mph with gusts to around 30 mph. Chance of precipitation 70 percent. .THURSDAY...Partly sunny. Chance of rain and snow in the morning, then slight chance of thunderstorms in the afternoon. Highs 49 to 57. Chance of precipitation 40 percent. .THURSDAY NIGHT...Partly cloudy. Lows in the mid 30s. .FRIDAY...Mostly sunny. A 20 percent chance of thunderstorms in the afternoon. Highs 56 to 62. .FRIDAY NIGHT THROUGH SATURDAY NIGHT...Partly cloudy. Lows in the lower 40s. Highs 63 to 69. .SUNDAY...Mostly sunny. A 20 percent chance of thunderstorms in the afternoon. Highs 66 to 72. .SUNDAY NIGHT...Partly cloudy. Lows in the mid 40s. .MEMORIAL DAY...Sunny. Highs 67 to 73. $$ MTZ319-191000- Helena Valley- Including the city of Helena 1232 AM MDT Mon May 18 2026 .REST OF TONIGHT...Partly cloudy. Patchy fog early in the morning. Highs in the mid 50s. Lows in the upper 20s. South winds up to 10 mph. .TUESDAY...Mostly sunny. A 20 percent chance of rain in the afternoon. Highs in the lower 60s. South winds 5 to 10 mph shifting to the west in the afternoon. .TUESDAY NIGHT...Partly cloudy. Lows in the upper 30s. Southwest winds up to 10 mph. .WEDNESDAY...Partly sunny. A 30 percent chance of rain in the afternoon. Highs in the mid 60s. West winds up to 10 mph. .WEDNESDAY NIGHT...Mostly cloudy. Rain likely in the evening, then chance of rain after midnight. Lows in the mid 30s. Northwest winds 5 to 15 mph decreasing to up to 5 mph after midnight. Chance of rain 70 percent. .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 around 40. .SATURDAY THROUGH MEMORIAL DAY...Partly cloudy. Highs in the upper 70s. Lows in the mid 40s. && TEMPERATURE / PRECIPITATION Helena 30 62 38 65 / 10 20 0 30 $$ MTZ320-191000- Big Belt, Bridger and Castle Mountains- Including the cities of Trident, Maudlow, Battle Ridge Pass, Bozeman Pass, and Deep Creek Pass 1232 AM MDT Mon May 18 2026 .REST OF TONIGHT...Partly cloudy. A 20 percent chance of snow. Highs 36 to 46. Lows 21 to 28. South winds up to 15 mph with gusts to around 40 mph. .TUESDAY...Not as cool. Sunny in the morning, then partly sunny with a 20 percent chance of rain in the afternoon. Highs 48 to 56. West winds 5 to 15 mph with gusts to around 30 mph. .TUESDAY NIGHT...Partly cloudy. Lows in the mid 30s. Southwest winds up to 10 mph with gusts to around 25 mph. .WEDNESDAY...Mostly sunny. A 50 percent chance of rain in the afternoon. Highs 49 to 59. West winds up to 15 mph with gusts to around 35 mph. .WEDNESDAY NIGHT...Mostly cloudy. Rain showers likely and slight chance of thunderstorms in the evening, then chance of rain and snow after midnight. Light snow accumulations. Lows in the mid 30s. Northwest winds up to 15 mph with gusts to around 30 mph. Chance of precipitation 70 percent. .THURSDAY...Partly sunny. A 50 percent chance of rain and snow in the morning. Highs 48 to 58. .THURSDAY NIGHT...Partly cloudy. Lows in the mid 30s. .FRIDAY...Partly sunny. A 20 percent chance of thunderstorms in the afternoon. Highs 55 to 63. .FRIDAY NIGHT THROUGH MEMORIAL DAY...Partly cloudy. Lows 39 to 45. Highs 60 to 74. $$ MTZ321-191000- Meagher County Valleys- Including the cities of Martinsdale, Checkerboard, Ringling, and White Sulphur Springs 1232 AM MDT Mon May 18 2026 .REST OF TONIGHT...Partly cloudy. A 20 percent chance of snow. Highs in the mid 40s. Lows 22 to 27. South winds up to 15 mph with gusts to around 30 mph. .TUESDAY...Not as cool. Mostly sunny. A 20 percent chance of rain in the afternoon. Highs in the mid 50s. West winds 5 to 15 mph. .TUESDAY NIGHT...Partly cloudy. Lows in the mid 30s. West winds up to 10 mph. Gusts up to 25 mph in the evening. .WEDNESDAY...Mostly sunny. A 50 percent chance of rain in the afternoon. Highs in the upper 50s. Southwest winds up to 10 mph shifting to the west in the afternoon. Gusts up to 30 mph. .WEDNESDAY NIGHT...Mostly cloudy. Rain showers likely and slight chance of thunderstorms in the evening, then chance of rain and snow after midnight. Lows in the mid 30s. Northwest winds up to 15 mph. Chance of precipitation 70 percent. .THURSDAY...Partly sunny. Chance of snow and slight chance of rain in the morning, then slight chance of thunderstorms in the afternoon. Highs in the upper 50s. Chance of precipitation 50 percent. .THURSDAY NIGHT...Partly cloudy in the evening then becoming mostly cloudy. Lows in the mid 30s. .FRIDAY...Partly sunny. A 20 percent chance of thunderstorms in the afternoon. Highs in the lower 60s. .FRIDAY NIGHT THROUGH MEMORIAL DAY...Partly cloudy. Lows 38 to 43. Highs in the lower 70s. $$ MTZ322-191000- Elkhorn and Boulder Mountains- Including the cities of Montana City, Clancy, Boulder, Corbin, Wickes, Elk Park Pass, and Homestake Pass 1232 AM MDT Mon May 18 2026 .REST OF TONIGHT...Partly cloudy with a 20 percent chance of snow. Patchy fog early in the morning. Highs 38 to 48. Lows 20 to 28. West winds up to 15 mph with gusts to around 40 mph. .TUESDAY...Not as cool. Mostly sunny. A 20 percent chance of rain and snow in the afternoon. Highs 47 to 57. West winds up to 10 mph. .TUESDAY NIGHT...Partly cloudy. Lows 28 to 36. West winds up to 10 mph. .WEDNESDAY...Mostly sunny. A 30 percent chance of rain and snow in the afternoon. Highs 49 to 59. West winds up to 10 mph with gusts to around 25 mph. .WEDNESDAY NIGHT...Mostly cloudy. Rain showers likely and slight chance of thunderstorms in the evening, then chance of rain and snow after midnight. Lows 30 to 36. Northwest winds up to 15 mph with gusts to around 30 mph. Chance of precipitation 70 percent. .THURSDAY...Mostly sunny. A 20 percent chance of rain and snow in the morning. Highs 49 to 59. .THURSDAY NIGHT...Partly cloudy. Lows 33 to 39. .FRIDAY...Warmer. Mostly sunny. A 20 percent chance of thunderstorms in the afternoon. Highs 55 to 65. .FRIDAY NIGHT THROUGH MEMORIAL DAY...Partly cloudy. Lows 35 to 46. Highs 61 to 74. $$ MTZ323-191000- Canyon Ferry Area- Including the cities of Toston, Townsend, and Winston 1232 AM MDT Mon May 18 2026 .REST OF TONIGHT...Partly cloudy. Highs around 50. Lows 26 to 32. South winds up to 15 mph with gusts to around 30 mph. .TUESDAY...Mostly sunny. A 20 percent chance of rain in the afternoon. Highs around 60. South winds up to 10 mph shifting to the west in the afternoon. .TUESDAY NIGHT...Partly cloudy. Lows 34 to 40. Northwest winds 5 to 10 mph shifting to the southwest after midnight. .WEDNESDAY...Mostly sunny. A 20 percent chance of rain in the afternoon. Highs in the lower 60s. Southwest winds up to 5 mph shifting to the northwest in the afternoon. .WEDNESDAY NIGHT...Mostly cloudy. Rain showers likely and slight chance of thunderstorms in the evening, then chance of rain after midnight. Lows in the upper 30s. Northwest winds 5 to 15 mph with gusts to around 30 mph. Chance of precipitation 70 percent. .THURSDAY AND THURSDAY NIGHT...Partly cloudy. Highs in the lower 60s. Lows around 40. .FRIDAY...Partly sunny. A 20 percent chance of thunderstorms in the afternoon. Highs in the upper 60s. .FRIDAY NIGHT THROUGH MEMORIAL DAY...Partly cloudy. Lows in the mid 40s. Highs in the mid 70s. $$ MTZ324-191000- Missouri Headwaters- Including the cities of Harrison, Three Forks, Willow Creek, Pony, and Whitehall 1232 AM MDT Mon May 18 2026 .REST OF TONIGHT...Partly cloudy. Highs 47 to 53. Lows 24 to 29. Southwest winds up to 15 mph. .TUESDAY...Mostly sunny. A 20 percent chance of rain in the afternoon. Highs around 60. West winds up to 10 mph. .TUESDAY NIGHT...Mostly cloudy in the evening then becoming partly cloudy. Lows in the mid 30s. West winds up to 10 mph. .WEDNESDAY...Mostly sunny. A 20 percent chance of rain in the afternoon. Highs in the lower 60s. West winds up to 10 mph. .WEDNESDAY NIGHT...Rain showers likely and slight chance of thunderstorms in the evening, then rain likely after midnight. Lows in the upper 30s. Northwest winds up to 10 mph with gusts to around 25 mph. Chance of precipitation 70 percent. .THURSDAY...Mostly sunny. A 20 percent chance of rain in the morning. Highs in the lower 60s. .THURSDAY NIGHT...Partly cloudy. Lows in the upper 30s. .FRIDAY...Partly sunny. A 20 percent chance of thunderstorms in the afternoon. Highs in the upper 60s. .FRIDAY NIGHT THROUGH MEMORIAL DAY...Partly cloudy. Lows in the lower 40s. Highs in the upper 70s. $$ MTZ325-191000- Madison River Valley- Including the cities of Cameron, Ennis, Jeffers, McAllister, and Norris 1232 AM MDT Mon May 18 2026 .REST OF TONIGHT...Breezy. Partly cloudy. A 20 percent chance of snow. Highs in the mid 40s. Lows 20 to 28. South winds 5 to 25 mph with gusts to around 40 mph. .TUESDAY...Not as cool. Sunny in the morning, then partly sunny with a 20 percent chance of rain in the afternoon. Highs in the upper 50s. Southwest winds 5 to 10 mph. .TUESDAY NIGHT...Mostly cloudy in the evening then becoming partly cloudy. Lows in the mid 30s. South winds up to 10 mph. .WEDNESDAY...Mostly sunny. A 20 percent chance of rain in the afternoon. Highs in the lower 60s. South winds up to 10 mph shifting to the west in the afternoon. .WEDNESDAY NIGHT...Rain showers likely and slight chance of thunderstorms in the evening, then rain likely after midnight. Lows in the mid 30s. Northwest winds up to 10 mph. Chance of precipitation 70 percent. .THURSDAY...Partly sunny. A 40 percent chance of rain and snow in the morning. Highs in the upper 50s. .THURSDAY NIGHT...Partly cloudy. A 20 percent chance of rain after midnight. Lows in the upper 30s. .FRIDAY...Partly sunny. A 20 percent chance of thunderstorms in the afternoon. Highs in the mid 60s. .FRIDAY NIGHT THROUGH MEMORIAL DAY...Partly cloudy. Lows 40 to 46. Highs in the mid 70s. $$ MTZ326-191000- Gallatin Valley- Including the cities of Bozeman and Gallatin Gateway 1232 AM MDT Mon May 18 2026 .REST OF TONIGHT...Partly cloudy. A 20 percent chance of snow. Patchy fog early in the morning. Highs in the upper 40s. Lows 23 to 28. Southeast winds 5 to 10 mph with gusts to around 25 mph. .TUESDAY...Sunny in the morning then becoming partly sunny. Highs in the upper 50s. Southwest winds up to 5 mph shifting to the west in the afternoon. .TUESDAY NIGHT...Not as cool. Partly cloudy. Lows in the mid 30s. West winds up to 10 mph shifting to the south after midnight. .WEDNESDAY...Mostly sunny. A 20 percent chance of rain in the afternoon. Highs in the lower 60s. South winds up to 5 mph shifting to the west in the afternoon. .WEDNESDAY NIGHT...Rain showers likely and slight chance of thunderstorms in the evening, then rain likely after midnight. Lows in the mid 30s. Northwest winds up to 10 mph. Chance of precipitation 70 percent. .THURSDAY...Partly sunny. A 50 percent chance of rain in the morning. Highs around 60. .THURSDAY NIGHT...Partly cloudy. Lows in the upper 30s. .FRIDAY...Partly sunny. Highs in the upper 60s. .FRIDAY NIGHT THROUGH MEMORIAL DAY...Partly cloudy. Lows 39 to 45. Highs 74 to 79. && TEMPERATURE / PRECIPITATION Bozeman Airport 23 60 34 64 / 10 10 0 10 Bozeman MSU 25 58 36 63 / 20 10 0 20 $$ MTZ330-191000- Gallatin and Madison County Mountains and Centennial Mountains- Including the cities of Big Sky, West Yellowstone, Targhee Pass, and Raynolds Pass 1232 AM MDT Mon May 18 2026 .REST OF TONIGHT...Breezy. Partly cloudy. A 50 percent chance of snow. Highs 30 to 42. Lows 16 to 25. Southwest winds up to 25 mph with gusts to around 60 mph. .TUESDAY...Not as cool. Sunny in the morning, then partly sunny with a 20 percent chance of rain and snow in the afternoon. Highs 42 to 52. Southwest winds up to 15 mph. .TUESDAY NIGHT...Mostly cloudy in the evening then becoming partly cloudy. Lows 27 to 33. Southwest winds up to 10 mph with gusts to around 25 mph. .WEDNESDAY...Not as cool. Sunny in the morning, then partly sunny with a 20 percent chance of rain and snow in the afternoon. Highs 46 to 58. Southwest winds up to 15 mph. .WEDNESDAY NIGHT...Rain showers, snow showers likely and slight chance of thunderstorms in the evening, then snow likely and chance of rain after midnight. Light snow accumulations. Snow level above 8000 feet. Lows 29 to 35. Northwest winds up to 10 mph with gusts to around 25 mph. Chance of precipitation 70 percent. .THURSDAY...Partly sunny. A 50 percent chance of snow and rain in the morning. Highs 44 to 56. .THURSDAY NIGHT...Partly cloudy. A 20 percent chance of snow after midnight. Lows 29 to 35. .FRIDAY...Not as cool. Mostly sunny. A 20 percent chance of thunderstorms in the afternoon. Highs 52 to 62. .FRIDAY NIGHT THROUGH SUNDAY NIGHT...Partly cloudy. Lows 32 to 44. Highs 58 to 72. .MEMORIAL DAY...Sunny. Highs 63 to 73. && TEMPERATURE / PRECIPITATION West Yellowstone 18 51 24 58 / 10 20 0 10 $$ MTZ327-191000- Northwest Beaverhead County- Including the cities of Dewey, Wisdom, Wise River, Big Hole Pass, and Chief Joseph Pass 1232 AM MDT Mon May 18 2026 .REST OF TONIGHT...Partly cloudy. Patchy fog early in the morning. Highs 36 to 46. Lows 18 to 24. West winds up to 15 mph with gusts to around 40 mph. .TUESDAY...Not as cool. Mostly sunny. A 20 percent chance of rain and snow in the afternoon. Highs 45 to 53. West winds up to 15 mph. .TUESDAY NIGHT...Partly cloudy. Lows in the upper 20s. West winds up to 10 mph with gusts to around 25 mph. .WEDNESDAY...Mostly sunny. A 20 percent chance of rain and snow in the afternoon. Highs 47 to 57. Southwest winds up to 5 mph shifting to the west 5 to 15 mph in the afternoon. .WEDNESDAY NIGHT...Mostly cloudy with chance of rain showers and slight chance of thunderstorms in the evening, then partly cloudy with slight chance of rain and snow after midnight. Lows in the lower 30s. Northwest winds 10 to 15 mph with gusts to around 30 mph decreasing to up to 10 mph after midnight. Chance of precipitation 50 percent. .THURSDAY AND THURSDAY NIGHT...Partly cloudy. Highs 49 to 59. Lows in the lower 30s. .FRIDAY AND FRIDAY NIGHT...Partly cloudy. Highs 54 to 64. Lows in the mid 30s. .SATURDAY THROUGH SUNDAY NIGHT...Partly cloudy. Highs 59 to 71. Lows in the upper 30s. .MEMORIAL DAY...Sunny. Highs 61 to 71. $$ MTZ328-191000- Beaverhead and Western Madison below 6000ft- Including the cities of Bannack, Dillon, Glen, and Waterloo 1232 AM MDT Mon May 18 2026 .REST OF TONIGHT...Mostly clear. Highs 43 to 49. Lows in the mid 20s. Southwest winds up to 20 mph with gusts to around 45 mph. .TUESDAY...Not as cool. Mostly sunny. A 20 percent chance of rain in the afternoon. Highs 54 to 60. Southwest winds up to 15 mph. .TUESDAY NIGHT...Mostly cloudy in the evening then becoming partly cloudy. Lows in the lower 30s. Southwest winds up to 10 mph. .WEDNESDAY...Sunny in the morning then becoming partly sunny. Highs 58 to 64. Southwest winds up to 5 mph shifting to the west 5 to 15 mph in the afternoon. .WEDNESDAY NIGHT...Mostly cloudy. Chance of rain showers and slight chance of thunderstorms in the evening, then chance of rain after midnight. Lows in the mid 30s. North winds 5 to 15 mph. Chance of precipitation 50 percent. .THURSDAY...Mostly sunny. A 20 percent chance of rain and snow in the morning. Highs 58 to 64. .THURSDAY NIGHT THROUGH FRIDAY NIGHT...Partly cloudy. Lows in the upper 30s. Highs 63 to 69. .SATURDAY THROUGH SUNDAY NIGHT...Partly cloudy. Highs 70 to 79. Lows in the lower 40s. .MEMORIAL DAY...Sunny. Highs 73 to 79. && TEMPERATURE / PRECIPITATION Dillon 24 60 30 63 / 10 20 0 0 $$ MTZ329-191000- Ruby Mountains and Southern Beaverhead Mountains- Including the city of Monida Pass 1232 AM MDT Mon May 18 2026 .REST OF TONIGHT...Windy. Partly cloudy with a 20 percent chance of snow. Highs 36 to 44. Lows 18 to 25. Southwest winds up to 30 mph with gusts to around 65 mph. .TUESDAY...Not as cool. Mostly sunny. A 20 percent chance of rain and snow in the afternoon. Highs 46 to 54. Southwest winds up to 10 mph shifting to the west in the afternoon. .TUESDAY NIGHT...Mostly cloudy in the evening then becoming partly cloudy. Lows 26 to 32. Southwest winds 5 to 15 mph decreasing to up to 5 mph after midnight. .WEDNESDAY...Sunny in the morning then becoming partly sunny. Highs 50 to 58. Southwest winds up to 5 mph increasing to west 10 to 15 mph with gusts to around 30 mph in the afternoon. .WEDNESDAY NIGHT...Mostly cloudy. Chance of rain showers and slight chance of thunderstorms in the evening, then slight chance of rain and snow after midnight. Lows in the lower 30s. Northwest winds 5 to 15 mph with gusts to around 35 mph. Chance of precipitation 50 percent. .THURSDAY...Mostly sunny. A 20 percent chance of rain and snow in the morning. Highs 50 to 58. .THURSDAY NIGHT THROUGH FRIDAY NIGHT...Partly cloudy. Lows in the mid 30s. Highs 57 to 63. .SATURDAY...Sunny. Highs 62 to 70. .SATURDAY NIGHT THROUGH SUNDAY NIGHT...Breezy. Partly cloudy. Lows around 40. Highs 65 to 73. .MEMORIAL DAY...Windy, sunny. Highs 66 to 72. $$