


Zone Forecast Product
Issued by NWS Great Falls, MT
Issued by NWS Great Falls, MT
916 FPUS55 KTFX 181558 ZFPTFX Zone Forecast Product for Central and Southwest Montana National Weather Service Great Falls MT 957 AM MDT Mon Aug 18 2025 Spot temperatures and probabilities of measurable precipitation are for the rest of today, tonight, and Tuesday. MTZ301-182200- East Glacier Park Region- Including East Glacier Park, Kiowa, Babb, Saint Mary, Marias Pass, and Logan Pass 957 AM MDT Mon Aug 18 2025 .REST OF TODAY...Partly cloudy late in the morning then becoming sunny. A 20 percent chance of thunderstorms in the afternoon. Highs 65 to 75. Southwest winds 5 to 15 mph. .TONIGHT...Mostly clear. Lows in the mid 50s. Southwest winds 5 to 10 mph. .TUESDAY...Warmer, sunny. Highs 75 to 85. Southwest winds 5 to 15 mph. .TUESDAY NIGHT...Partly cloudy in the evening then becoming mostly cloudy. Lows 50 to 60. Southwest winds 5 to 15 mph. .WEDNESDAY...Sunny. Highs 70 to 80. Southwest winds 5 to 15 mph. Gusts up to 30 mph in the afternoon. .WEDNESDAY NIGHT AND THURSDAY...Mostly clear. Lows 45 to 50. Highs 65 to 75. .THURSDAY NIGHT THROUGH SATURDAY...Mostly clear. Lows 45 to 50. Highs 65 to 75. .SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows 50 to 55. Highs 70 to 80. $$ MTZ307-182200- Southern Rocky Mountain Front- Including Rogers Pass 957 AM MDT Mon Aug 18 2025 .REST OF TODAY...Warmer. Partly cloudy late in the morning then becoming sunny. A 20 percent chance of thunderstorms in the afternoon. Highs 70 to 80. Southwest winds 5 to 15 mph. .TONIGHT...Mostly clear. A 20 percent chance of thunderstorms in the evening. Lows 55 to 60. Southwest winds up to 10 mph. .TUESDAY...Sunny. Highs 75 to 85. Southwest winds up to 10 mph. .TUESDAY NIGHT...Partly cloudy with a 20 percent chance of thunderstorms in the evening, then mostly cloudy after midnight. Lows 50 to 60. West winds up to 10 mph. .WEDNESDAY...Sunny. Highs 70 to 80. West winds 5 to 15 mph. .WEDNESDAY NIGHT THROUGH FRIDAY NIGHT...Mostly clear. Lows 45 to 50. Highs 65 to 75. .SATURDAY AND SATURDAY NIGHT...Mostly clear. Highs 70 to 80. Lows 50 to 55. .SUNDAY...Sunny. Highs 75 to 85. $$ MTZ302-182200- Northern High Plains- Including Browning, Heart Butte, and Dupuyer 957 AM MDT Mon Aug 18 2025 .REST OF TODAY...Sunny. Highs 80 to 85. Southwest winds 5 to 15 mph. .TONIGHT...Mostly clear. Lows 55 to 60. West winds up to 10 mph. .TUESDAY...Sunny. Highs 85 to 90. Southwest winds 5 to 15 mph. .TUESDAY NIGHT...Partly cloudy in the evening then becoming mostly cloudy. Lows 55 to 60. West winds 5 to 15 mph. .WEDNESDAY...Sunny. Highs 80 to 85. West winds 5 to 15 mph. Gusts up to 30 mph in the afternoon. .WEDNESDAY NIGHT AND THURSDAY...Not as warm. Mostly clear. Lows 50 to 55. Highs around 75. .THURSDAY NIGHT THROUGH SATURDAY NIGHT...Mostly clear. Lows 45 to 50. Highs 70 to 80. .SUNDAY...Sunny. Highs 80 to 85. $$ MTZ308-182200- Southern High Plains- Including Bynum, Choteau, and Pendroy 957 AM MDT Mon Aug 18 2025 .REST OF TODAY...Partly cloudy late in the morning then becoming sunny. Highs in the mid 80s. South winds up to 10 mph. .TONIGHT...Mostly clear. A 20 percent chance of thunderstorms in the evening. Lows 55 to 60. West winds up to 10 mph. .TUESDAY...Sunny. Highs 90 to 95. West winds up to 5 mph shifting to the south in the afternoon. .TUESDAY NIGHT...Partly cloudy with a 20 percent chance of thunderstorms in the evening, then mostly cloudy after midnight. Lows around 60. West winds 5 to 10 mph. .WEDNESDAY...Sunny. Highs 85 to 90. Southwest winds 5 to 10 mph. .WEDNESDAY NIGHT...Mostly clear with a 20 percent chance of thunderstorms. Lows around 55. .THURSDAY THROUGH SATURDAY NIGHT...Mostly clear. Highs 75 to 85. Lows 50 to 55. .SUNDAY...Sunny. Highs 85 to 90. $$ MTZ303-182200- Eastern Glacier, Western Toole, and Central Pondera- Including Cut Bank, Ethridge, and Santa Rita 957 AM MDT Mon Aug 18 2025 .REST OF TODAY...Partly cloudy late in the morning then becoming sunny. Highs 80 to 85. Southwest winds 5 to 15 mph. .TONIGHT...Mostly clear. Lows 55 to 60. West winds up to 10 mph. .TUESDAY...Sunny. Highs 90 to 95. Northwest winds up to 10 mph shifting to the south in the afternoon. .TUESDAY NIGHT...Mostly clear in the evening then becoming mostly cloudy. Lows around 60. West winds 5 to 10 mph. .WEDNESDAY...Partly cloudy in the morning then becoming sunny. Highs 85 to 90. West winds 5 to 15 mph. .WEDNESDAY NIGHT AND THURSDAY...Not as warm. Mostly clear. Lows 50 to 55. Highs 75 to 80. .THURSDAY NIGHT THROUGH SATURDAY NIGHT...Mostly clear. Lows 45 to 55. Highs 70 to 80. .SUNDAY...Sunny. Highs 80 to 85. && TEMPERATURE / PRECIPITATION Cut Bank 84 54 91 / 0 20 0 $$ MTZ304-182200- Eastern Toole and Liberty- Including Devon, Shelby, Chester, Galata, Joplin, Lothair, and Whitlash 957 AM MDT Mon Aug 18 2025 .REST OF TODAY...Partly cloudy late in the morning then clearing. Highs 80 to 90. South winds up to 10 mph. .TONIGHT...Mostly clear. Lows 55 to 60. South winds up to 10 mph. .TUESDAY...Sunny. Highs 90 to 95. Northwest winds up to 5 mph shifting to the south in the afternoon. .TUESDAY NIGHT...Mostly clear in the evening, then mostly cloudy with a 20 percent chance of rain showers after midnight. Lows 60 to 65. Southeast winds 5 to 10 mph shifting to the northwest after midnight. .WEDNESDAY...Partly cloudy in the morning then becoming sunny. Highs 85 to 90. West winds 5 to 15 mph. .WEDNESDAY NIGHT...Partly cloudy. Lows around 55. .THURSDAY THROUGH SATURDAY NIGHT...Mostly clear. Highs 75 to 80. Lows 50 to 55. .SUNDAY...Warmer, sunny. Highs 80 to 90. $$ MTZ305-182200- Hill County- Including Havre 957 AM MDT Mon Aug 18 2025 .REST OF TODAY...Partly cloudy late in the morning then becoming sunny. Highs 85 to 90. Southwest winds up to 10 mph. .TONIGHT...Mostly clear. Lows around 60. South winds up to 10 mph. .TUESDAY...Sunny. Highs in the mid 90s. East winds up to 5 mph shifting to the south in the afternoon. .TUESDAY NIGHT...Mostly clear in the evening, then mostly cloudy with a 20 percent chance of showers after midnight. Lows around 60. East winds 5 to 10 mph shifting to the north after midnight. .WEDNESDAY...Partly cloudy in the morning then becoming sunny. Highs around 90. Northwest winds 5 to 10 mph. .WEDNESDAY NIGHT...Partly cloudy with a 20 percent chance of rain showers. Lows around 55. .THURSDAY THROUGH SATURDAY NIGHT...Mostly clear. Highs 75 to 80. Lows 50 to 55. .SUNDAY...Sunny. Highs around 85. && TEMPERATURE / PRECIPITATION Havre 90 60 96 / 0 10 0 $$ MTZ306-182200- Northern Blaine County- Including Chinook, Zurich, Harlem, Hogeland, and Fort Belknap 957 AM MDT Mon Aug 18 2025 .REST OF TODAY...Sunny. Highs in the mid 80s. Southwest winds up to 10 mph. .TONIGHT...Mostly clear. Lows around 60. Southeast winds up to 10 mph. .TUESDAY...Sunny. Highs 90 to 95. Southeast winds up to 10 mph. .TUESDAY NIGHT...Partly cloudy. Lows around 60. Southeast winds 5 to 10 mph shifting to the northeast after midnight. .WEDNESDAY...Partly cloudy in the morning then becoming sunny. Highs around 90. Northwest winds 5 to 15 mph. .WEDNESDAY NIGHT...Partly cloudy with a 20 percent chance of rain showers. Lows 55 to 60. .THURSDAY AND THURSDAY NIGHT...Not as warm. Mostly clear. Highs 75 to 80. Lows around 50. .FRIDAY THROUGH SATURDAY NIGHT...Mostly clear. Highs 75 to 80. Lows 45 to 50. .SUNDAY...Sunny. Highs around 80. $$ MTZ309-182200- Eastern Pondera and Eastern Teton- Including Brady, Conrad, and Ledger 957 AM MDT Mon Aug 18 2025 .REST OF TODAY...Partly cloudy late in the morning then clearing. Highs 85 to 90. South winds up to 10 mph. .TONIGHT...Mostly clear. Lows in the mid 50s. West winds up to 10 mph. .TUESDAY...Sunny. Highs in the mid 90s. West winds up to 5 mph shifting to the southeast in the afternoon. .TUESDAY NIGHT...Mostly clear in the evening then becoming mostly cloudy. Lows around 60. Northwest winds 5 to 10 mph. .WEDNESDAY...Sunny. Highs around 90. West winds up to 10 mph. .WEDNESDAY NIGHT...Partly cloudy with a 20 percent chance of thunderstorms. Lows around 55. .THURSDAY THROUGH SATURDAY NIGHT...Mostly clear. Highs 75 to 85. Lows around 50. .SUNDAY...Sunny. Highs 85 to 90. $$ MTZ310-182200- Western and Central Chouteau County- Including Floweree, Carter, and Fort Benton 957 AM MDT Mon Aug 18 2025 .REST OF TODAY...Sunny. Highs 85 to 90. South winds up to 5 mph. .TONIGHT...Mostly clear. A 20 percent chance of rain showers in the evening. Lows 60 to 65. South winds up to 10 mph. .TUESDAY...Sunny. Highs in the mid 90s. Southwest winds up to 5 mph shifting to the north in the afternoon. .TUESDAY NIGHT...Partly cloudy. Lows 60 to 65. East winds 5 to 10 mph shifting to the northwest after midnight. .WEDNESDAY...Sunny. Highs around 90. Northwest winds up to 10 mph. .WEDNESDAY NIGHT...Partly cloudy with a 20 percent chance of thunderstorms. Lows 55 to 60. .THURSDAY THROUGH SATURDAY NIGHT...Mostly clear. Highs 80 to 85. Lows around 55. .SUNDAY...Sunny. Highs 85 to 90. $$ MTZ311-182200- Bears Paw Mountains and Southern Blaine- Including Rocky Boy 957 AM MDT Mon Aug 18 2025 .REST OF TODAY...Sunny. Highs 80 to 90. Southwest winds up to 10 mph. .TONIGHT...Mostly clear. Lows 60 to 65. South winds up to 10 mph. .TUESDAY...Sunny. Highs 90 to 95. South winds up to 10 mph. .TUESDAY NIGHT...Partly cloudy. Lows 60 to 65. Northeast winds up to 10 mph. .WEDNESDAY...Sunny. Highs 85 to 90. Northwest winds 5 to 15 mph. .WEDNESDAY NIGHT...Mostly cloudy with chance of rain showers and slight chance of thunderstorms. Lows 55 to 60. Chance of precipitation 30 percent. .THURSDAY...Sunny with a 20 percent chance of rain showers. Highs 75 to 80. .THURSDAY NIGHT THROUGH SUNDAY...Mostly clear. Lows 50 to 55. Highs 75 to 85. $$ MTZ312-182200- Cascade County below 5000ft- Including Great Falls 957 AM MDT Mon Aug 18 2025 .REST OF TODAY...Partly cloudy late in the morning then clearing. Highs 85 to 90. Southwest winds up to 10 mph. .TONIGHT...Mostly clear. A 20 percent chance of thunderstorms in the evening. Lows around 60. Southwest winds up to 10 mph. .TUESDAY...Sunny. Highs 95 to 100. Southwest winds up to 10 mph. .TUESDAY NIGHT...Partly cloudy. Lows around 60. West winds up to 10 mph. .WEDNESDAY...Sunny. Highs 90 to 95. West winds 5 to 10 mph. .WEDNESDAY NIGHT...Partly cloudy with a 20 percent chance of thunderstorms. Lows 55 to 60. .THURSDAY AND THURSDAY NIGHT...Not as warm. Mostly clear. Highs 80 to 85. Lows 50 to 55. .FRIDAY THROUGH SATURDAY NIGHT...Mostly clear. Highs 80 to 85. Lows 50 to 55. .SUNDAY...Sunny. Highs 85 to 90. && TEMPERATURE / PRECIPITATION Great Falls Arpt 89 59 96 / 10 20 0 $$ MTZ313-182200- Judith Basin County and Judith Gap- Including Raynesford, Geyser, Stanford, Windham, Benchland, Hobson, and Moccasin 957 AM MDT Mon Aug 18 2025 .REST OF TODAY...Sunny. Highs in the mid 80s. Southeast winds up to 10 mph. .TONIGHT...Partly cloudy. A 20 percent chance of thunderstorms in the evening. Lows 55 to 60. South winds up to 10 mph. .TUESDAY...Sunny. Highs in the mid 90s. Southwest winds up to 10 mph shifting to the east in the afternoon. .TUESDAY NIGHT...Mostly clear. Lows around 60. Southeast winds 5 to 10 mph shifting to the southwest after midnight. .WEDNESDAY...Sunny. Highs around 90. West winds 5 to 10 mph shifting to the north 5 to 15 mph in the afternoon. .WEDNESDAY NIGHT...Mostly cloudy with chance of rain showers and slight chance of thunderstorms. Lows around 55. Chance of precipitation 40 percent. .THURSDAY...Not as warm. Partly cloudy with a 20 percent chance of thunderstorms. Highs around 80. .THURSDAY NIGHT THROUGH SATURDAY NIGHT...Mostly clear. Lows 50 to 55. Highs 75 to 80. .SUNDAY...Sunny. Highs around 85. $$ MTZ314-182200- Fergus County below 4500ft- Including Hilger and Lewistown 957 AM MDT Mon Aug 18 2025 .REST OF TODAY...Sunny. Highs 85 to 90. Southwest winds up to 5 mph shifting to the southeast in the afternoon. .TONIGHT...Mostly clear. A 20 percent chance of rain showers in the evening. Lows 60 to 65. South winds up to 10 mph. .TUESDAY...Sunny. Highs 95 to 100. Southwest winds up to 5 mph shifting to the northeast in the afternoon. .TUESDAY NIGHT...Mostly clear. Lows 60 to 65. East winds 5 to 10 mph shifting to the south after midnight. .WEDNESDAY...Sunny. Highs 90 to 95. Northwest winds 5 to 15 mph. .WEDNESDAY NIGHT...Mostly cloudy with chance of rain showers and slight chance of thunderstorms. Lows 60 to 65. Chance of precipitation 40 percent. .THURSDAY...Not as warm. Partly cloudy with a 20 percent chance of thunderstorms. Highs around 80. .THURSDAY NIGHT THROUGH SATURDAY NIGHT...Mostly clear. Lows 50 to 55. Highs 75 to 85. .SUNDAY...Sunny. Highs around 85. && TEMPERATURE / PRECIPITATION Lewistown 85 58 93 / 10 20 0 $$ MTZ315-182200- Upper Blackfoot and MacDonald Pass- Including Marysville, Lincoln, Flesher Pass, and MacDonald Pass 957 AM MDT Mon Aug 18 2025 .REST OF TODAY...Warmer. Partly cloudy late in the morning then becoming sunny. A 20 percent chance of thunderstorms. Highs 75 to 85. Southwest winds up to 10 mph. .TONIGHT...Mostly clear. A 20 percent chance of thunderstorms in the evening. Lows 55 to 60. Southwest winds up to 10 mph. .TUESDAY...Sunny. Highs 85 to 90. Southwest winds up to 10 mph. .TUESDAY NIGHT...Partly cloudy. Lows 55 to 60. Northwest winds up to 10 mph. .WEDNESDAY...Sunny. Highs 75 to 85. West winds up to 10 mph. .WEDNESDAY NIGHT...Partly cloudy. Lows 50 to 55. .THURSDAY...Sunny. Highs 70 to 80. .THURSDAY NIGHT...Clear. Lows 45 to 55. .FRIDAY AND FRIDAY NIGHT...Mostly clear. Highs 70 to 80. Lows 45 to 55. .SATURDAY AND SATURDAY NIGHT...Mostly clear. Highs 75 to 85. Lows 50 to 55. .SUNDAY...Partly cloudy. Highs 75 to 85. $$ MTZ316-182200- Gates of the Mountains- Including Canyon Creek, Wolf Creek, and Craig 957 AM MDT Mon Aug 18 2025 .REST OF TODAY...Warmer. Partly cloudy late in the morning then becoming sunny. A 20 percent chance of thunderstorms late in the morning. Highs 80 to 90. South winds up to 10 mph. .TONIGHT...Mostly clear. A 20 percent chance of thunderstorms in the evening. Lows 55 to 60. Southwest winds up to 10 mph. .TUESDAY...Sunny. Highs 90 to 95. South winds up to 10 mph. .TUESDAY NIGHT...Partly cloudy. Lows around 60. West winds up to 10 mph. .WEDNESDAY...Sunny in the morning then becoming partly cloudy. Highs 85 to 90. Southwest winds up to 10 mph. .WEDNESDAY NIGHT...Partly cloudy with a 20 percent chance of thunderstorms. Lows around 55. .THURSDAY THROUGH FRIDAY...Mostly clear. Highs 75 to 85. Lows 50 to 55. .FRIDAY NIGHT...Clear. Lows 50 to 55. .SATURDAY AND SATURDAY NIGHT...Mostly clear. Highs 80 to 85. Lows around 55. .SUNDAY...Partly cloudy. Highs 85 to 90. $$ MTZ317-182200- Little Belt and Highwood Mountains- Including Monarch, Neihart, and Kings Hill Pass 957 AM MDT Mon Aug 18 2025 .REST OF TODAY...Sunny. Highs 75 to 80. Southwest winds up to 10 mph. .TONIGHT...Partly cloudy. A 20 percent chance of thunderstorms in the evening. Lows 55 to 60. South winds up to 10 mph. .TUESDAY...Sunny. Highs 80 to 90. Southwest winds up to 10 mph. .TUESDAY NIGHT...Mostly clear. Lows 55 to 60. South winds up to 10 mph shifting to the southwest after midnight. .WEDNESDAY...Sunny. Highs 80 to 85. West winds up to 10 mph. .WEDNESDAY NIGHT...Mostly cloudy with chance of rain showers and slight chance of thunderstorms. Lows 50 to 55. Chance of precipitation 40 percent. .THURSDAY...Partly cloudy with a 20 percent chance of thunderstorms. Highs 70 to 75. .THURSDAY NIGHT THROUGH FRIDAY NIGHT...Mostly clear. Lows 45 to 55. Highs 65 to 75. .SATURDAY AND SATURDAY NIGHT...Mostly clear. Highs 70 to 80. Lows 50 to 55. .SUNDAY...Partly cloudy. Highs 75 to 85. $$ MTZ318-182200- Snowy and Judith Mountains- 957 AM MDT Mon Aug 18 2025 .REST OF TODAY...Sunny. Highs 75 to 80. South winds up to 10 mph. .TONIGHT...Mostly clear. A 20 percent chance of thunderstorms in the evening. Lows 55 to 60. Southeast winds up to 10 mph. .TUESDAY...Sunny. Highs 85 to 90. Southwest winds up to 10 mph. .TUESDAY NIGHT...Mostly clear. Lows around 60. South winds 5 to 10 mph. .WEDNESDAY...Sunny. Highs 80 to 85. Northwest winds 5 to 15 mph. .WEDNESDAY NIGHT...Mostly cloudy with chance of rain showers and slight chance of thunderstorms. Lows 55 to 60. Chance of precipitation 40 percent. .THURSDAY...Mostly cloudy with a 20 percent chance of thunderstorms. Highs 70 to 75. .THURSDAY NIGHT AND FRIDAY...Mostly clear. Lows 50 to 55. Highs 65 to 70. .FRIDAY NIGHT THROUGH SUNDAY...Mostly clear. Lows 45 to 50. Highs 70 to 80. $$ MTZ319-182200- Helena Valley- Including Helena 957 AM MDT Mon Aug 18 2025 .REST OF TODAY...Sunny with a 20 percent chance of thunderstorms. Highs 85 to 90. Southeast winds up to 10 mph. .TONIGHT...Partly cloudy. A 50 percent chance of thunderstorms in the evening. Lows 55 to 60. South winds up to 10 mph. .TUESDAY...Sunny. Highs in the mid 90s. Southeast winds up to 10 mph. .TUESDAY NIGHT...Partly cloudy. Lows 55 to 60. Northeast winds 5 to 10 mph shifting to the west after midnight. .WEDNESDAY...Sunny in the morning then becoming partly cloudy. Highs around 90. West winds up to 10 mph. .WEDNESDAY NIGHT...Mostly cloudy. Lows around 55. .THURSDAY...Sunny. Highs around 85. .THURSDAY NIGHT AND FRIDAY...Clear. Lows 50 to 55. Highs 80 to 85. .FRIDAY NIGHT AND SATURDAY...Clear. Lows around 50. Highs 85 to 90. .SATURDAY NIGHT...Mostly clear. Lows around 55. .SUNDAY...Partly cloudy. Highs around 90. && TEMPERATURE / PRECIPITATION Helena 89 58 96 / 20 50 0 $$ MTZ320-182200- Big Belt, Bridger and Castle Mountains- Including Trident, Maudlow, Battle Ridge Pass, Bozeman Pass, and Deep Creek Pass 957 AM MDT Mon Aug 18 2025 .REST OF TODAY...Sunny with a 20 percent chance of thunderstorms. Highs 75 to 85. Southwest winds up to 10 mph. .TONIGHT...Partly cloudy. A 20 percent chance of thunderstorms in the evening. Lows 55 to 60. Northeast winds up to 10 mph shifting to the southeast after midnight. .TUESDAY...Sunny. Highs 85 to 90. South winds up to 10 mph. .TUESDAY NIGHT...Mostly clear. Lows 55 to 60. Southeast winds 5 to 10 mph. .WEDNESDAY...Sunny in the morning then becoming partly cloudy. Highs 80 to 85. Southwest winds up to 10 mph. .WEDNESDAY NIGHT...Mostly cloudy with a 20 percent chance of thunderstorms. Lows around 55. .THURSDAY THROUGH FRIDAY...Mostly clear. Highs 70 to 80. Lows 50 to 55. .FRIDAY NIGHT THROUGH SATURDAY NIGHT...Mostly clear. Lows 50 to 55. Highs 70 to 80. .SUNDAY...Partly cloudy. Highs 75 to 85. $$ MTZ321-182200- Meagher County Valleys- Including Martinsdale, Checkerboard, Ringling, and White Sulphur Springs 957 AM MDT Mon Aug 18 2025 .REST OF TODAY...Sunny. Highs 80 to 85. South winds up to 10 mph shifting to the southwest in the afternoon. .TONIGHT...Partly cloudy. A 20 percent chance of thunderstorms in the evening. Lows 50 to 55. Northwest winds 5 to 10 mph shifting to the southeast after midnight. .TUESDAY...Sunny. Highs around 90. South winds 5 to 15 mph. .TUESDAY NIGHT...Mostly clear. Lows around 55. South winds 5 to 10 mph shifting to the east after midnight. .WEDNESDAY...Sunny. Highs 85 to 90. Southwest winds up to 5 mph shifting to the west 5 to 15 mph in the afternoon. .WEDNESDAY NIGHT...Mostly cloudy with a 20 percent chance of thunderstorms. Lows 50 to 55. .THURSDAY THROUGH SATURDAY NIGHT...Mostly clear. Highs 75 to 80. Lows 45 to 50. .SUNDAY...Partly cloudy. Highs 80 to 85. $$ MTZ322-182200- Elkhorn and Boulder Mountains- Including Montana City, Clancy, Boulder, Corbin, Wickes, Elk Park Pass, and Homestake Pass 957 AM MDT Mon Aug 18 2025 .REST OF TODAY...Warmer. Partly cloudy with a 20 percent chance of thunderstorms. Highs 75 to 85. Southwest winds up to 10 mph. .TONIGHT...Partly cloudy. A 20 percent chance of thunderstorms in the evening. Lows 50 to 60. West winds up to 10 mph shifting to the south after midnight. .TUESDAY...Sunny. Highs 80 to 90. South winds up to 10 mph. .TUESDAY NIGHT...Mostly clear. Lows 55 to 60. Southwest winds 5 to 10 mph shifting to the west after midnight. .WEDNESDAY...Sunny. Highs 75 to 85. West winds up to 10 mph. .WEDNESDAY NIGHT...Partly cloudy. Lows 50 to 55. .THURSDAY AND THURSDAY NIGHT...Mostly clear. Highs 70 to 80. Lows 45 to 55. .FRIDAY...Sunny. Highs 70 to 80. .FRIDAY NIGHT THROUGH SATURDAY NIGHT...Mostly clear. Lows 45 to 55. Highs 75 to 80. .SUNDAY...Partly cloudy with a 20 percent chance of rain showers. Highs 75 to 85. $$ MTZ323-182200- Canyon Ferry Area- Including Toston, Townsend, and Winston 957 AM MDT Mon Aug 18 2025 .REST OF TODAY...Sunny with a 20 percent chance of thunderstorms. Highs 85 to 90. South winds up to 10 mph. .TONIGHT...Partly cloudy. A 20 percent chance of thunderstorms in the evening. Lows 55 to 60. North winds 5 to 10 mph shifting to the southeast after midnight. .TUESDAY...Sunny. Highs 90 to 95. South winds up to 10 mph. .TUESDAY NIGHT...Mostly clear. Lows 55 to 60. East winds 5 to 10 mph shifting to the north after midnight. .WEDNESDAY...Sunny. Highs 85 to 90. Southwest winds up to 5 mph shifting to the west in the afternoon. .WEDNESDAY NIGHT...Partly cloudy with a 20 percent chance of rain showers. Lows 55 to 60. .THURSDAY AND THURSDAY NIGHT...Mostly clear. Highs 80 to 85. Lows 50 to 55. .FRIDAY...Sunny. Highs 80 to 85. .FRIDAY NIGHT THROUGH SATURDAY NIGHT...Mostly clear. Lows 50 to 55. Highs around 85. .SUNDAY...Partly cloudy. Highs 85 to 90. $$ MTZ324-182200- Missouri Headwaters- Including Harrison, Three Forks, Willow Creek, Pony, and Whitehall 957 AM MDT Mon Aug 18 2025 .REST OF TODAY...Sunny with a 20 percent chance of thunderstorms. Highs 85 to 90. Southwest winds up to 10 mph. .TONIGHT...Partly cloudy. A 20 percent chance of thunderstorms in the evening. Lows in the mid 50s. Northwest winds 5 to 10 mph shifting to the southwest after midnight. .TUESDAY...Sunny. Highs 90 to 95. Southwest winds up to 10 mph. .TUESDAY NIGHT...Mostly clear. Lows 55 to 60. South winds 5 to 10 mph shifting to the west after midnight. .WEDNESDAY...Sunny in the morning then becoming partly cloudy. Highs around 90. West winds up to 10 mph. .WEDNESDAY NIGHT...Partly cloudy. Lows around 55. .THURSDAY AND THURSDAY NIGHT...Mostly clear. Highs 80 to 85. Lows 50 to 55. .FRIDAY...Sunny. Highs 80 to 85. .FRIDAY NIGHT AND SATURDAY...Mostly clear. Lows 50 to 55. Highs 85 to 90. .SATURDAY NIGHT AND SUNDAY...Partly cloudy. Lows 50 to 55. Highs 85 to 90. $$ MTZ325-182200- Madison River Valley- Including Cameron, Ennis, Jeffers, McAllister, and Norris 957 AM MDT Mon Aug 18 2025 .REST OF TODAY...Sunny late in the morning, then partly cloudy with a 20 percent chance of thunderstorms in the afternoon. Highs 85 to 90. South winds 5 to 15 mph. .TONIGHT...Mostly clear. A 20 percent chance of thunderstorms in the evening. Lows 50 to 60. South winds 5 to 15 mph. .TUESDAY...Sunny. Highs 90 to 95. South winds 5 to 15 mph. .TUESDAY NIGHT...Mostly clear. Lows 55 to 60. South winds 10 to 15 mph. .WEDNESDAY...Sunny in the morning then becoming partly cloudy. Highs 85 to 90. South winds 5 to 10 mph shifting to the west 5 to 15 mph in the afternoon. .WEDNESDAY NIGHT...Partly cloudy. Lows 50 to 55. .THURSDAY AND THURSDAY NIGHT...Mostly clear. Highs 80 to 85. Lows around 50. .FRIDAY...Sunny. Highs 80 to 85. .FRIDAY NIGHT AND SATURDAY...Mostly clear. Lows 50 to 55. Highs around 85. .SATURDAY NIGHT...Partly cloudy. Lows 50 to 55. .SUNDAY...Partly cloudy with a 20 percent chance of rain showers. Highs 85 to 90. $$ MTZ326-182200- Gallatin Valley- Including Bozeman and Gallatin Gateway 957 AM MDT Mon Aug 18 2025 .REST OF TODAY...Sunny. A 20 percent chance of thunderstorms in the afternoon. Highs 85 to 90. Northwest winds up to 10 mph. .TONIGHT...Partly cloudy. A 20 percent chance of thunderstorms in the evening. Lows 55 to 60. Southeast winds 5 to 10 mph. .TUESDAY...Sunny. Highs in the mid 90s. South winds up to 10 mph shifting to the west in the afternoon. .TUESDAY NIGHT...Mostly clear. Lows 55 to 60. Southeast winds 5 to 15 mph. .WEDNESDAY...Sunny in the morning then becoming partly cloudy. Highs around 90. South winds up to 10 mph shifting to the northwest in the afternoon. .WEDNESDAY NIGHT...Partly cloudy. Lows around 55. .THURSDAY AND THURSDAY NIGHT...Mostly clear. Highs around 85. Lows around 50. .FRIDAY...Sunny. Highs 80 to 85. .FRIDAY NIGHT AND SATURDAY...Mostly clear. Lows around 50. Highs around 85. .SATURDAY NIGHT...Partly cloudy. Lows 50 to 55. .SUNDAY...Partly cloudy with a 20 percent chance of rain showers. Highs 85 to 90. && TEMPERATURE / PRECIPITATION Bozeman Airport 89 53 96 / 20 20 0 Bozeman MSU 86 56 93 / 20 20 0 $$ MTZ330-182200- Gallatin and Madison County Mountains and Centennial Mountains- Including Big Sky, West Yellowstone, Targhee Pass, and Raynolds Pass 957 AM MDT Mon Aug 18 2025 .REST OF TODAY...Sunny. A 20 percent chance of thunderstorms in the afternoon. Highs 70 to 80. Southwest winds 5 to 15 mph. Gusts up to 30 mph in the afternoon. .TONIGHT...Mostly clear. Lows 50 to 55. South winds 5 to 15 mph. .TUESDAY...Sunny. Highs 75 to 85. South winds 5 to 15 mph. .TUESDAY NIGHT...Mostly clear. Lows 50 to 60. South winds 5 to 15 mph. .WEDNESDAY...Sunny in the morning then becoming partly cloudy. Highs 75 to 85. South winds up to 10 mph shifting to the southwest in the afternoon. .WEDNESDAY NIGHT...Cooler. Partly cloudy. Lows 45 to 55. .THURSDAY THROUGH SATURDAY...Mostly clear. Highs 70 to 80. Lows 45 to 50. .SATURDAY NIGHT...Partly cloudy. Lows 50 to 55. .SUNDAY...Partly cloudy with a 40 percent chance of rain showers. Highs 70 to 80. && TEMPERATURE / PRECIPITATION West Yellowstone 82 40 86 / 20 10 0 $$ MTZ327-182200- Northwest Beaverhead County- Including Dewey, Wisdom, Wise River, Big Hole Pass, and Chief Joseph Pass 957 AM MDT Mon Aug 18 2025 .REST OF TODAY...Warmer. Sunny late in the morning, then partly cloudy with a 20 percent chance of thunderstorms in the afternoon. Highs 70 to 80. Southwest winds 5 to 15 mph. .TONIGHT...Mostly clear. A 20 percent chance of thunderstorms in the evening. Lows 45 to 55. Southwest winds up to 10 mph shifting to the south after midnight. .TUESDAY...Sunny. Highs 75 to 85. South winds 5 to 15 mph. .TUESDAY NIGHT...Partly cloudy. Lows 50 to 55. South winds 5 to 15 mph shifting to the west after midnight. .WEDNESDAY...Sunny in the morning then becoming partly cloudy. Highs 75 to 85. West winds 5 to 15 mph. .WEDNESDAY NIGHT...Partly cloudy. Lows 45 to 50. .THURSDAY AND THURSDAY NIGHT...Mostly clear. Highs 70 to 80. Lows 40 to 50. .FRIDAY...Sunny. Highs 75 to 85. .FRIDAY NIGHT AND SATURDAY...Mostly clear. Lows 45 to 50. Highs 75 to 85. .SATURDAY NIGHT...Partly cloudy. Lows 45 to 55. .SUNDAY...Partly cloudy with a 20 percent chance of rain showers. Highs 70 to 80. $$ MTZ328-182200- Beaverhead and Western Madison below 6000ft- Including Bannack, Dillon, Glen, and Waterloo 957 AM MDT Mon Aug 18 2025 .REST OF TODAY...Sunny late in the morning, then partly cloudy with a 20 percent chance of thunderstorms in the afternoon. Highs 80 to 85. Southwest winds 5 to 15 mph. .TONIGHT...Mostly clear. A 20 percent chance of thunderstorms in the evening. Lows 50 to 55. West winds 5 to 10 mph shifting to the south after midnight. .TUESDAY...Sunny. Highs 90 to 95. South winds 5 to 15 mph. .TUESDAY NIGHT...Mostly clear. Lows 50 to 60. South winds 5 to 15 mph. .WEDNESDAY...Sunny in the morning then becoming partly cloudy. Highs 85 to 90. Southwest winds 5 to 15 mph. .WEDNESDAY NIGHT...Partly cloudy. Lows 50 to 55. .THURSDAY AND THURSDAY NIGHT...Mostly clear. Highs 80 to 85. Lows 45 to 50. .FRIDAY...Sunny. Highs 80 to 85. .FRIDAY NIGHT AND SATURDAY...Mostly clear. Lows around 50. Highs 80 to 90. .SATURDAY NIGHT...Partly cloudy. Lows 50 to 55. .SUNDAY...Partly cloudy with a 20 percent chance of rain showers. Highs 80 to 90. && TEMPERATURE / PRECIPITATION Dillon 86 49 93 / 20 20 0 $$ MTZ329-182200- Ruby Mountains and Southern Beaverhead Mountains- Including Monida Pass 957 AM MDT Mon Aug 18 2025 .REST OF TODAY...Sunny late in the morning, then partly cloudy with a 20 percent chance of thunderstorms in the afternoon. Highs 75 to 80. South winds 5 to 10 mph shifting to the southwest 10 to 20 mph in the afternoon. .TONIGHT...Mostly clear. Lows 50 to 55. South winds 5 to 15 mph. .TUESDAY...Sunny. Highs 80 to 85. South winds 5 to 15 mph. Gusts up to 30 mph in the afternoon. .TUESDAY NIGHT...Mostly clear. Lows around 55. South winds 5 to 15 mph. Gusts up to 30 mph in the evening. .WEDNESDAY...Sunny in the morning then becoming partly cloudy. Highs 75 to 85. South winds up to 10 mph shifting to the southwest in the afternoon. .WEDNESDAY NIGHT...Partly cloudy. Lows 50 to 55. .THURSDAY THROUGH SATURDAY...Mostly clear. Highs 75 to 85. Lows 45 to 50. .SATURDAY NIGHT...Partly cloudy. Lows 50 to 55. .SUNDAY...Partly cloudy with a 50 percent chance of rain showers. Highs 75 to 80. $$ http://www.weather.gov/greatfalls https://www.twitter.com/NWSGreatFalls https://www.facebook.com/NWSGreatFalls