


Zone Forecast Product
Issued by NWS Great Falls, MT
Issued by NWS Great Falls, MT
697 FPUS55 KTFX 172016 ZFPTFX Zone Forecast Product for Central and Southwest Montana National Weather Service Great Falls MT 216 PM MDT Sun Aug 17 2025 Spot temperatures and probabilities of measurable precipitation are for tonight, Monday, Monday night, and Tuesday. MTZ301-181000- East Glacier Park Region- Including East Glacier Park, Kiowa, Babb, Saint Mary, Marias Pass, and Logan Pass 216 PM MDT Sun Aug 17 2025 .TONIGHT...Mostly clear. Lows around 50. Southwest winds 5 to 15 mph. .MONDAY...Mostly cloudy in the morning then clearing. Highs 65 to 75. Southwest winds 5 to 15 mph. .MONDAY NIGHT...Mostly clear. Lows 50 to 55. Southwest winds 5 to 10 mph. .TUESDAY...Sunny. Highs 70 to 80. Southwest winds 5 to 15 mph. .TUESDAY NIGHT...Partly cloudy with a 20 percent chance of thunderstorms in the evening, then mostly cloudy after midnight. Lows around 55. Southwest winds 5 to 15 mph. .WEDNESDAY AND WEDNESDAY NIGHT...Mostly clear. Highs 70 to 80. Lows 45 to 50. .THURSDAY THROUGH FRIDAY NIGHT...Mostly clear. Highs 60 to 70. Lows around 45. .SATURDAY THROUGH SUNDAY...Mostly clear. Highs 65 to 75. Lows 45 to 50. $$ MTZ307-181000- Southern Rocky Mountain Front- Including Rogers Pass 216 PM MDT Sun Aug 17 2025 .TONIGHT...Mostly clear. Lows 45 to 55. West winds up to 10 mph. .MONDAY...Haze in the morning. Partly cloudy in the morning, then sunny with a 20 percent chance of thunderstorms in the afternoon. Highs 70 to 80. Southwest winds 5 to 15 mph. .MONDAY NIGHT...Mostly clear. Lows 50 to 60. West winds up to 10 mph. .TUESDAY...Sunny. Highs 75 to 85. Southwest winds up to 10 mph. .TUESDAY NIGHT...Partly cloudy with slight chance of thunderstorms in the evening, then mostly cloudy with slight chance of rain showers after midnight. Lows around 55. West winds up to 10 mph. Chance of precipitation 20 percent. .WEDNESDAY AND WEDNESDAY NIGHT...Mostly clear. Highs 70 to 80. Lows 45 to 50. .THURSDAY AND THURSDAY NIGHT...Mostly clear. Highs 65 to 75. Lows 45 to 50. .FRIDAY AND FRIDAY NIGHT...Mostly clear. Highs 60 to 70. Lows around 45. .SATURDAY AND SATURDAY NIGHT...Mostly clear. Highs 65 to 75. Lows 45 to 50. .SUNDAY...Sunny. Highs 70 to 80. $$ MTZ302-181000- Northern High Plains- Including Browning, Heart Butte, and Dupuyer 216 PM MDT Sun Aug 17 2025 .TONIGHT...Mostly clear. Lows 50 to 55. West winds 5 to 15 mph. .MONDAY...Partly cloudy. Highs 80 to 85. Southwest winds 5 to 15 mph. .MONDAY NIGHT...Mostly clear. Lows 55 to 60. West winds 5 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 AND WEDNESDAY NIGHT...Mostly clear. Highs 80 to 85. Lows 50 to 55. .THURSDAY AND THURSDAY NIGHT...Not as warm. Mostly clear. Highs around 75. Lows 45 to 50. .FRIDAY AND FRIDAY NIGHT...Mostly clear. Highs around 70. Lows 45 to 50. .SATURDAY THROUGH SUNDAY...Mostly clear. Highs 75 to 80. Lows around 50. $$ MTZ308-181000- Southern High Plains- Including Bynum, Choteau, and Pendroy 216 PM MDT Sun Aug 17 2025 .TONIGHT...Partly cloudy. A 20 percent chance of rain showers in the evening. Lows in the mid 50s. West winds up to 10 mph. .MONDAY...Partly cloudy. A 20 percent chance of thunderstorms in the afternoon. Highs in the mid 80s. Southwest winds up to 10 mph. .MONDAY NIGHT...Mostly clear. Lows 55 to 60. West winds up to 10 mph. .TUESDAY...Sunny. Highs 90 to 95. West winds up to 5 mph shifting to the south in the afternoon. .TUESDAY NIGHT...Partly cloudy in the evening then becoming mostly cloudy. Lows around 60. West winds 5 to 10 mph. .WEDNESDAY...Sunny. Highs 85 to 90. .WEDNESDAY NIGHT...Partly cloudy. Lows around 55. .THURSDAY AND THURSDAY NIGHT...Not as warm. Mostly clear. Highs 75 to 80. Lows around 50. .FRIDAY THROUGH SATURDAY NIGHT...Mostly clear. Highs 70 to 80. Lows around 50. .SUNDAY...Sunny. Highs 80 to 85. $$ MTZ303-181000- Eastern Glacier, Western Toole, and Central Pondera- Including Cut Bank, Ethridge, and Santa Rita 216 PM MDT Sun Aug 17 2025 .TONIGHT...Mostly clear. Lows 50 to 55. West winds up to 10 mph. .MONDAY...Partly cloudy in the morning then clearing. Highs 80 to 85. Southwest winds 5 to 15 mph. .MONDAY NIGHT...Mostly clear. Lows 55 to 60. West winds up to 10 mph. .TUESDAY...Sunny. Highs around 90. West winds up to 10 mph shifting to the south in the afternoon. .TUESDAY NIGHT...Mostly clear in the evening then becoming mostly cloudy. Lows 55 to 60. West winds 5 to 10 mph. .WEDNESDAY AND WEDNESDAY NIGHT...Mostly clear. Highs 85 to 90. Lows 50 to 55. .THURSDAY AND THURSDAY NIGHT...Not as warm. Mostly clear. Highs 75 to 80. Lows 45 to 50. .FRIDAY THROUGH SUNDAY...Mostly clear. Highs 70 to 80. Lows 45 to 50. && TEMPERATURE / PRECIPITATION Cut Bank 50 85 54 90 / 0 10 0 0 $$ MTZ304-181000- Eastern Toole and Liberty- Including Devon, Shelby, Chester, Galata, Joplin, Lothair, and Whitlash 216 PM MDT Sun Aug 17 2025 .TONIGHT...Partly cloudy. Lows in the mid 50s. West winds up to 10 mph. .MONDAY...Partly cloudy in the morning then becoming sunny. Highs 85 to 90. Southwest winds up to 10 mph. .MONDAY NIGHT...Mostly clear. Lows around 60. Southwest winds up to 10 mph shifting to the north after midnight. .TUESDAY...Sunny. Highs 90 to 95. Northwest winds up to 5 mph shifting to the southeast in the afternoon. .TUESDAY NIGHT...Partly cloudy with slight chance of thunderstorms in the evening, then mostly cloudy with slight chance of rain showers after midnight. Lows around 60. Southeast winds 5 to 10 mph shifting to the northwest after midnight. Chance of precipitation 20 percent. .WEDNESDAY...Sunny. Highs 85 to 95. .WEDNESDAY NIGHT...Partly cloudy. Lows around 55. .THURSDAY AND THURSDAY NIGHT...Not as warm. Mostly clear. Highs 75 to 80. Lows around 50. .FRIDAY THROUGH SATURDAY NIGHT...Mostly clear. Highs 70 to 80. Lows 50 to 55. .SUNDAY...Sunny. Highs 75 to 85. $$ MTZ305-181000- Hill County- Including Havre 216 PM MDT Sun Aug 17 2025 .TONIGHT...Mostly cloudy in the evening then clearing. Lows 55 to 60. Southwest winds up to 10 mph. .MONDAY...Sunny. Highs 85 to 90. South winds up to 10 mph. .MONDAY NIGHT...Mostly clear. Lows around 60. Southeast winds up to 10 mph. .TUESDAY...Sunny. Highs around 95. North winds up to 5 mph shifting to the southeast in the afternoon. .TUESDAY NIGHT...Mostly clear with slight chance of thunderstorms in the evening, then mostly cloudy with slight chance of showers after midnight. Lows around 60. Southeast winds 5 to 10 mph shifting to the northeast after midnight. Chance of precipitation 20 percent. .WEDNESDAY...Sunny. Highs around 90. .WEDNESDAY NIGHT...Partly cloudy. Lows around 55. .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 50 to 55. .SUNDAY...Sunny. Highs around 80. && TEMPERATURE / PRECIPITATION Havre 57 89 60 95 / 10 20 0 0 $$ MTZ306-181000- Northern Blaine County- Including Chinook, Zurich, Harlem, Hogeland, and Fort Belknap 216 PM MDT Sun Aug 17 2025 .TONIGHT...Mostly cloudy in the evening then becoming partly cloudy. Lows 55 to 60. West winds up to 10 mph. .MONDAY...Sunny. Highs 85 to 90. South winds up to 10 mph. .MONDAY NIGHT...Mostly clear. Lows around 60. Southeast winds 5 to 10 mph. .TUESDAY...Sunny. Highs 90 to 95. Southeast winds up to 10 mph. .TUESDAY NIGHT...Partly cloudy. Lows around 60. Southeast winds 5 to 10 mph shifting to the east after midnight. .WEDNESDAY...Sunny. Highs 90 to 95. .WEDNESDAY NIGHT...Partly cloudy with a 20 percent chance of thunderstorms. Lows around 55. .THURSDAY AND THURSDAY NIGHT...Not as warm. Mostly clear. Highs 75 to 80. Lows around 50. .FRIDAY THROUGH SUNDAY...Mostly clear. Highs 70 to 80. Lows 45 to 50. $$ MTZ309-181000- Eastern Pondera and Eastern Teton- Including Brady, Conrad, and Ledger 216 PM MDT Sun Aug 17 2025 .TONIGHT...Mostly cloudy with a 40 percent chance of rain showers in the evening, then mostly clear after midnight. Lows 50 to 55. Southwest winds up to 10 mph. .MONDAY...Partly cloudy in the morning, then sunny with a 20 percent chance of rain showers in the afternoon. Highs 85 to 90. South winds up to 10 mph. .MONDAY NIGHT...Mostly clear. Lows 55 to 60. Northwest winds up to 10 mph. .TUESDAY...Sunny. Highs around 95. 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. Southwest winds 5 to 10 mph shifting to the northwest after midnight. .WEDNESDAY...Sunny. Highs around 90. .WEDNESDAY NIGHT...Partly cloudy. Lows around 55. .THURSDAY AND THURSDAY NIGHT...Not as warm. Mostly clear. Highs around 80. Lows around 50. .FRIDAY AND FRIDAY NIGHT...Mostly clear. Highs around 75. Lows around 50. .SATURDAY THROUGH SUNDAY...Mostly clear. Highs 80 to 85. Lows around 50. $$ MTZ310-181000- Western and Central Chouteau County- Including Floweree, Carter, and Fort Benton 216 PM MDT Sun Aug 17 2025 .TONIGHT...Mostly cloudy with a 20 percent chance of thunderstorms in the evening, then mostly clear after midnight. Lows 55 to 60. South winds up to 10 mph. .MONDAY...Sunny. A 20 percent chance of rain showers in the afternoon. Highs around 90. South winds up to 10 mph. .MONDAY NIGHT...Mostly clear. Lows 60 to 65. Southeast winds up to 10 mph. .TUESDAY...Sunny. Highs around 95. Southwest winds up to 5 mph shifting to the north in the afternoon. .TUESDAY NIGHT...Partly cloudy. Lows 60 to 65. East winds 5 to 10 mph shifting to the north after midnight. .WEDNESDAY...Sunny. Highs 90 to 95. .WEDNESDAY NIGHT...Partly cloudy with a 20 percent chance of rain showers. Lows 55 to 60. .THURSDAY THROUGH SUNDAY...Mostly clear. Highs 75 to 85. Lows 50 to 55. $$ MTZ311-181000- Bears Paw Mountains and Southern Blaine- Including Rocky Boy 216 PM MDT Sun Aug 17 2025 .TONIGHT...Mostly cloudy with chance of rain showers and slight chance of thunderstorms in the evening, then partly cloudy after midnight. Lows 55 to 60. Southwest winds up to 10 mph. Chance of precipitation 50 percent. .MONDAY...Sunny. A 20 percent chance of rain showers in the afternoon. Highs 85 to 90. Southwest winds up to 10 mph. .MONDAY NIGHT...Mostly clear. Lows 60 to 65. Southeast 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. East winds up to 10 mph. .WEDNESDAY...Sunny. Highs 85 to 95. .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 75 to 80. Lows 50 to 55. .FRIDAY THROUGH SUNDAY...Mostly clear. Highs 70 to 80. Lows 50 to 55. $$ MTZ312-181000- Cascade County below 5000ft- Including Great Falls 216 PM MDT Sun Aug 17 2025 .TONIGHT...Mostly cloudy with a 20 percent chance of thunderstorms in the evening, then mostly clear after midnight. Lows 55 to 60. South winds up to 10 mph. .MONDAY...Partly cloudy in the morning, then sunny with a 20 percent chance of rain showers in the afternoon. Highs 85 to 90. Southwest winds up to 10 mph. .MONDAY NIGHT...Mostly clear. Lows around 60. Southwest winds up to 10 mph. .TUESDAY...Sunny. Highs around 95. Southwest winds up to 10 mph. .TUESDAY NIGHT...Partly cloudy. Lows around 60. West winds 5 to 10 mph. .WEDNESDAY...Sunny. Highs 90 to 95. .WEDNESDAY NIGHT...Partly cloudy. Lows around 55. .THURSDAY AND THURSDAY NIGHT...Not as warm. Mostly clear. Highs 80 to 85. Lows 50 to 55. .FRIDAY THROUGH SUNDAY...Mostly clear. Highs 75 to 85. Lows 50 to 55. && TEMPERATURE / PRECIPITATION Great Falls Arpt 56 89 59 95 / 20 20 0 0 $$ MTZ313-181000- Judith Basin County and Judith Gap- Including Raynesford, Geyser, Stanford, Windham, Benchland, Hobson, and Moccasin 216 PM MDT Sun Aug 17 2025 .TONIGHT...Mostly cloudy with a 50 percent chance of thunderstorms in the evening, then mostly clear after midnight. Haze after midnight. Lows in the mid 50s. Southwest winds up to 10 mph. .MONDAY...Sunny. Haze in the morning. A 20 percent chance of thunderstorms in the afternoon. Highs in the mid 80s. South winds up to 10 mph. .MONDAY NIGHT...Mostly clear. Lows 55 to 60. South winds up to 10 mph. .TUESDAY...Sunny. Highs 90 to 95. Southwest winds up to 10 mph shifting to the north in the afternoon. .TUESDAY NIGHT...Mostly clear. Lows around 60. East winds 5 to 10 mph shifting to the southwest after midnight. .WEDNESDAY...Sunny. Highs around 90. .WEDNESDAY NIGHT...Partly cloudy with a 20 percent chance of thunderstorms. Lows around 55. .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 around 50. .SUNDAY...Sunny. Highs around 80. $$ MTZ314-181000- Fergus County below 4500ft- Including Hilger and Lewistown 216 PM MDT Sun Aug 17 2025 .TONIGHT...Mostly cloudy with a 50 percent chance of thunderstorms in the evening, then partly cloudy after midnight. Lows 55 to 60. Southwest winds up to 10 mph. .MONDAY...Sunny. A 20 percent chance of rain showers in the afternoon. Highs 85 to 90. Southwest winds up to 5 mph shifting to the southeast in the afternoon. .MONDAY NIGHT...Mostly clear. Lows 60 to 65. Southeast winds up to 10 mph shifting to the south after midnight. .TUESDAY...Sunny. Highs 90 to 95. South winds up to 10 mph. .TUESDAY NIGHT...Mostly clear. Lows 60 to 65. East winds 5 to 10 mph shifting to the south after midnight. .WEDNESDAY...Sunny. Highs 90 to 95. .WEDNESDAY NIGHT...Partly cloudy with a 20 percent chance of thunderstorms. Lows around 60. .THURSDAY THROUGH SUNDAY...Mostly clear. Highs 75 to 80. Lows 50 to 55. && TEMPERATURE / PRECIPITATION Lewistown 53 85 58 91 / 70 20 10 0 $$ MTZ315-181000- Upper Blackfoot and MacDonald Pass- Including Marysville, Lincoln, Flesher Pass, and MacDonald Pass 216 PM MDT Sun Aug 17 2025 .TONIGHT...Mostly cloudy with chance of rain showers and slight chance of thunderstorms in the evening, then mostly clear after midnight. Lows 50 to 55. Southwest winds up to 10 mph. Chance of precipitation 50 percent. .MONDAY...Partly cloudy in the morning, then sunny with a 20 percent chance of thunderstorms in the afternoon. Highs 75 to 85. Southwest winds up to 10 mph. .MONDAY NIGHT...Mostly clear. Haze in the evening. Lows 55 to 60. Southwest winds up to 10 mph. .TUESDAY...Sunny. Highs 80 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 80 to 85. .WEDNESDAY NIGHT...Partly cloudy. Lows 50 to 55. .THURSDAY THROUGH SUNDAY...Mostly clear. Highs 70 to 80. Lows 45 to 55. $$ MTZ316-181000- Gates of the Mountains- Including Canyon Creek, Wolf Creek, and Craig 216 PM MDT Sun Aug 17 2025 .TONIGHT...Mostly cloudy with a 20 percent chance of thunderstorms in the evening, then mostly clear after midnight. Haze after midnight. Lows in the mid 50s. South winds up to 10 mph. .MONDAY...Partly cloudy in the morning, then sunny with a 20 percent chance of thunderstorms in the afternoon. Highs 80 to 85. Southwest winds 5 to 15 mph. .MONDAY NIGHT...Mostly clear. Lows 55 to 60. Southwest winds up to 10 mph. .TUESDAY...Warmer, sunny. Highs 90 to 95. South winds up to 10 mph. .TUESDAY NIGHT...Partly cloudy. Lows 55 to 60. Northwest winds up to 10 mph. .WEDNESDAY...Sunny. Highs 85 to 90. .WEDNESDAY NIGHT...Partly cloudy. Lows around 55. .THURSDAY AND THURSDAY NIGHT...Mostly clear. Highs 80 to 85. Lows 50 to 55. .FRIDAY THROUGH SUNDAY...Mostly clear. Highs 75 to 85. Lows 50 to 55. $$ MTZ317-181000- Little Belt and Highwood Mountains- Including Monarch, Neihart, and Kings Hill Pass 216 PM MDT Sun Aug 17 2025 .TONIGHT...Mostly cloudy with chance of rain showers and slight chance of thunderstorms in the evening, then mostly clear after midnight. Haze after midnight. Lows 50 to 55. Southwest winds up to 10 mph. Chance of precipitation 50 percent. .MONDAY...Sunny. A 20 percent chance of thunderstorms in the afternoon. Highs 75 to 80. Southwest winds up to 10 mph. .MONDAY NIGHT...Mostly clear. A 20 percent chance of rain showers in the evening. Lows 55 to 60. South winds up to 10 mph. .TUESDAY...Warmer, sunny. Highs 80 to 90. Southwest winds up to 10 mph. .TUESDAY NIGHT...Mostly clear. Lows 55 to 60. Southeast winds up to 10 mph. .WEDNESDAY...Sunny. Highs 80 to 85. .WEDNESDAY NIGHT...Partly cloudy with a 20 percent chance of thunderstorms. Lows 50 to 55. .THURSDAY AND THURSDAY NIGHT...Not as warm. Mostly clear. Highs 70 to 75. Lows 45 to 50. .FRIDAY AND FRIDAY NIGHT...Mostly clear. Highs 65 to 75. Lows 45 to 50. .SATURDAY THROUGH SUNDAY...Mostly clear. Highs 70 to 80. Lows 45 to 55. $$ MTZ318-181000- Snowy and Judith Mountains- 216 PM MDT Sun Aug 17 2025 .TONIGHT...Mostly cloudy with a 50 percent chance of thunderstorms in the evening, then partly cloudy after midnight. Haze after midnight. Lows 50 to 55. Southwest winds up to 10 mph. .MONDAY...Sunny. A 20 percent chance of thunderstorms in the afternoon. Highs 75 to 85. Southwest winds up to 10 mph. .MONDAY NIGHT...Partly cloudy. A 20 percent chance of rain showers in the evening. Lows 55 to 60. Southeast winds up to 10 mph. .TUESDAY...Sunny. Highs 80 to 90. Southwest winds 5 to 10 mph. .TUESDAY NIGHT...Mostly clear. Lows around 60. Southeast winds 5 to 10 mph. .WEDNESDAY...Sunny. Highs 80 to 85. .WEDNESDAY NIGHT...Mostly cloudy with a 20 percent chance of thunderstorms. Lows 55 to 60. .THURSDAY...Partly cloudy with a 20 percent chance of rain showers. Highs 70 to 75. .THURSDAY NIGHT...Mostly clear with a 20 percent chance of rain showers. Lows around 50. .FRIDAY THROUGH SUNDAY...Mostly clear. Highs 65 to 75. Lows 45 to 50. $$ MTZ319-181000- Helena Valley- Including Helena 216 PM MDT Sun Aug 17 2025 .TONIGHT...Mostly cloudy with a 20 percent chance of thunderstorms in the evening, then mostly clear after midnight. Lows 50 to 55. South winds up to 10 mph. .MONDAY...Partly cloudy in the morning, then sunny with a 20 percent chance of thunderstorms in the afternoon. Highs 85 to 90. Southeast winds up to 10 mph. .MONDAY NIGHT...Mostly clear. Lows 55 to 60. East winds up to 10 mph shifting to the south after midnight. .TUESDAY...Sunny. Highs around 95. 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. Highs 90 to 95. .WEDNESDAY NIGHT...Partly cloudy. Lows around 55. .THURSDAY THROUGH FRIDAY...Mostly clear. Highs 80 to 85. Lows 50 to 55. .FRIDAY NIGHT THROUGH SUNDAY...Mostly clear. Lows 50 to 55. Highs around 85. && TEMPERATURE / PRECIPITATION Helena 55 89 58 95 / 30 20 10 0 $$ MTZ320-181000- Big Belt, Bridger and Castle Mountains- Including Trident, Maudlow, Battle Ridge Pass, Bozeman Pass, and Deep Creek Pass 216 PM MDT Sun Aug 17 2025 .TONIGHT...Mostly cloudy with a 50 percent chance of thunderstorms in the evening, then partly cloudy after midnight. Haze through the night. Lows 50 to 55. South winds up to 10 mph. .MONDAY...Partly cloudy. A 20 percent chance of thunderstorms in the afternoon. Highs 75 to 85. Southwest winds 5 to 15 mph. .MONDAY NIGHT...Partly cloudy. Haze in the evening. Lows 55 to 60. Southeast winds up to 10 mph. .TUESDAY...Sunny. Highs 80 to 90. South winds up to 10 mph. .TUESDAY NIGHT...Mostly clear. Lows 55 to 60. Southeast winds 5 to 10 mph. .WEDNESDAY...Sunny. Highs 80 to 85. .WEDNESDAY NIGHT...Partly cloudy. Lows 50 to 55. .THURSDAY THROUGH FRIDAY...Mostly clear. Highs 70 to 80. Lows 50 to 55. .FRIDAY NIGHT THROUGH SUNDAY...Mostly clear. Lows 45 to 50. Highs 70 to 80. $$ MTZ321-181000- Meagher County Valleys- Including Martinsdale, Checkerboard, Ringling, and White Sulphur Springs 216 PM MDT Sun Aug 17 2025 .TONIGHT...Mostly cloudy with a 50 percent chance of thunderstorms in the evening, then partly cloudy after midnight. Haze after midnight. Lows around 50. South winds up to 10 mph. .MONDAY...Sunny. Haze in the morning. A 20 percent chance of thunderstorms in the afternoon. Highs 80 to 85. South winds up to 10 mph shifting to the west in the afternoon. .MONDAY NIGHT...Partly cloudy. Lows 50 to 55. Northeast winds up to 10 mph shifting to the southeast after midnight. .TUESDAY...Sunny. Highs around 90. South winds up to 5 mph shifting to the southwest 5 to 15 mph in the afternoon. .TUESDAY NIGHT...Mostly clear. Lows 50 to 55. South winds 5 to 10 mph shifting to the east after midnight. .WEDNESDAY...Sunny. Highs 85 to 90. .WEDNESDAY NIGHT...Partly cloudy. Lows 50 to 55. .THURSDAY AND THURSDAY NIGHT...Not as warm. Mostly clear. Highs around 80. Lows 45 to 50. .FRIDAY THROUGH SATURDAY NIGHT...Mostly clear. Highs 75 to 80. Lows 45 to 50. .SUNDAY...Sunny. Highs around 80. $$ MTZ322-181000- Elkhorn and Boulder Mountains- Including Montana City, Clancy, Boulder, Corbin, Wickes, Elk Park Pass, and Homestake Pass 216 PM MDT Sun Aug 17 2025 .TONIGHT...Mostly cloudy with a 50 percent chance of thunderstorms in the evening, then mostly clear after midnight. Lows 50 to 55. Southwest winds up to 10 mph. .MONDAY...Sunny in the morning, then partly cloudy with a 20 percent chance of thunderstorms in the afternoon. Highs 70 to 80. Southwest winds up to 10 mph. .MONDAY NIGHT...Partly cloudy. Haze after midnight. Lows 50 to 60. West winds up to 10 mph. .TUESDAY...Warmer, sunny. Haze in the morning. Highs 80 to 90. South winds up to 10 mph. .TUESDAY NIGHT...Partly cloudy. Lows 50 to 60. West winds up to 10 mph. .WEDNESDAY...Sunny. Highs 75 to 85. .WEDNESDAY NIGHT...Partly cloudy. Lows 50 to 55. .THURSDAY THROUGH SATURDAY NIGHT...Mostly clear. Highs 70 to 80. Lows 45 to 55. .SUNDAY...Partly cloudy with a 20 percent chance of rain showers. Highs 70 to 80. $$ MTZ323-181000- Canyon Ferry Area- Including Toston, Townsend, and Winston 216 PM MDT Sun Aug 17 2025 .TONIGHT...Cooler. Mostly cloudy with a 50 percent chance of thunderstorms in the evening, then partly cloudy after midnight. Haze through the night. Areas of smoke after midnight. Lows 50 to 55. Southeast winds up to 10 mph. .MONDAY...Partly cloudy. A 20 percent chance of thunderstorms in the afternoon. Highs in the mid 80s. South winds up to 10 mph. .MONDAY NIGHT...Partly cloudy. Lows 55 to 60. South winds up to 10 mph. .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 around 90. .WEDNESDAY NIGHT...Partly cloudy. Lows 55 to 60. .THURSDAY THROUGH SUNDAY...Mostly clear. Highs 80 to 85. Lows 50 to 55. $$ MTZ324-181000- Missouri Headwaters- Including Harrison, Three Forks, Willow Creek, Pony, and Whitehall 216 PM MDT Sun Aug 17 2025 .TONIGHT...Mostly cloudy with a 50 percent chance of thunderstorms in the evening, then partly cloudy after midnight. Areas of smoke in the evening. Haze through the night. Lows 50 to 55. West winds up to 10 mph. .MONDAY...Partly cloudy. A 20 percent chance of thunderstorms in the afternoon. Haze in the afternoon. Highs 85 to 90. Southwest winds up to 10 mph. .MONDAY NIGHT...Partly cloudy. Haze after midnight. Lows in the mid 50s. Southwest winds up to 10 mph. .TUESDAY...Sunny. Highs 90 to 95. Southwest winds up to 10 mph. .TUESDAY NIGHT...Mostly clear. Lows 55 to 60. South winds 5 to 10 mph shifting to the southwest after midnight. .WEDNESDAY...Sunny. Highs 90 to 95. .WEDNESDAY NIGHT...Partly cloudy. Lows around 55. .THURSDAY THROUGH SATURDAY...Mostly clear. Highs 80 to 85. Lows around 50. .SATURDAY NIGHT AND SUNDAY...Partly cloudy. Lows 50 to 55. Highs around 85. $$ MTZ325-181000- Madison River Valley- Including Cameron, Ennis, Jeffers, McAllister, and Norris 216 PM MDT Sun Aug 17 2025 .TONIGHT...Mostly cloudy with a 50 percent chance of thunderstorms in the evening, then partly cloudy after midnight. Lows 50 to 55. South winds 5 to 10 mph. .MONDAY...Sunny in the morning, then partly cloudy with a 20 percent chance of thunderstorms in the afternoon. Highs in the mid 80s. South winds 5 to 15 mph. .MONDAY NIGHT...Mostly clear. Areas of smoke in the evening. Haze through the night. 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. Highs around 90. .WEDNESDAY NIGHT...Partly cloudy. Lows 50 to 55. .THURSDAY...Sunny. Highs around 85. .THURSDAY NIGHT...Mostly clear. Lows 45 to 55. .FRIDAY...Sunny. Highs 80 to 85. .FRIDAY NIGHT AND SATURDAY...Mostly clear. Lows 45 to 50. Highs 80 to 85. .SATURDAY NIGHT...Partly cloudy. Lows 50 to 55. .SUNDAY...Partly cloudy with a 20 percent chance of rain showers. Highs 80 to 85. $$ MTZ326-181000- Gallatin Valley- Including Bozeman and Gallatin Gateway 216 PM MDT Sun Aug 17 2025 .TONIGHT...Mostly cloudy with a 50 percent chance of thunderstorms in the evening, then partly cloudy after midnight. Areas of smoke in the evening. Haze through the night. Lows 50 to 55. Southeast winds up to 10 mph. .MONDAY...Partly cloudy. A 20 percent chance of thunderstorms in the afternoon. Haze in the afternoon. Highs 85 to 90. Southeast winds up to 5 mph shifting to the west in the afternoon. .MONDAY NIGHT...Partly cloudy. Haze. Lows in the mid 50s. Southeast winds 5 to 10 mph. .TUESDAY...Sunny. Highs 90 to 95. South winds up to 10 mph shifting to the west in the afternoon. .TUESDAY NIGHT...Mostly clear. Lows 55 to 60. Southeast winds 5 to 15 mph. .WEDNESDAY...Sunny. Highs around 90. .WEDNESDAY NIGHT...Partly cloudy. Lows around 55. .THURSDAY THROUGH SATURDAY...Mostly clear. Highs 80 to 85. Lows around 50. .SATURDAY NIGHT...Partly cloudy. Lows around 50. .SUNDAY...Partly cloudy with a 20 percent chance of rain showers. Highs around 85. && TEMPERATURE / PRECIPITATION Bozeman Airport 50 89 53 96 / 40 20 10 0 Bozeman MSU 52 86 56 93 / 40 20 10 0 $$ MTZ330-181000- Gallatin and Madison County Mountains and Centennial Mountains- Including Big Sky, West Yellowstone, Targhee Pass, and Raynolds Pass 216 PM MDT Sun Aug 17 2025 .TONIGHT...Mostly cloudy with a 50 percent chance of thunderstorms in the evening, then mostly clear after midnight. Lows 45 to 50. Southwest winds 5 to 10 mph shifting to the south after midnight. .MONDAY...Sunny 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. Gusts up to 30 mph in the afternoon. .MONDAY NIGHT...Mostly clear. Haze in the evening. 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. Highs 75 to 85. .WEDNESDAY NIGHT...Cooler. Partly cloudy. Lows 45 to 50. .THURSDAY THROUGH FRIDAY NIGHT...Mostly clear. Highs 70 to 80. Lows 45 to 50. .SATURDAY...Sunny with a 20 percent chance of rain showers. Highs 70 to 80. .SATURDAY NIGHT...Partly cloudy with a 20 percent chance of rain showers. Lows 45 to 50. .SUNDAY...Partly cloudy with a 40 percent chance of rain showers. Highs 70 to 80. && TEMPERATURE / PRECIPITATION West Yellowstone 40 82 40 86 / 40 10 0 0 $$ MTZ327-181000- Northwest Beaverhead County- Including Dewey, Wisdom, Wise River, Big Hole Pass, and Chief Joseph Pass 216 PM MDT Sun Aug 17 2025 .TONIGHT...Partly cloudy. Chance of rain showers and slight chance of thunderstorms in the evening. Lows 45 to 50. South winds up to 10 mph. Chance of precipitation 50 percent. .MONDAY...Sunny in the morning, then partly cloudy with a 20 percent chance of thunderstorms in the afternoon. Highs 70 to 80. Southwest winds 5 to 15 mph. .MONDAY NIGHT...Mostly clear. Lows 45 to 55. Southwest winds up to 10 mph shifting to the southeast after midnight. .TUESDAY...Sunny. Highs 75 to 85. South winds 5 to 15 mph. .TUESDAY NIGHT...Partly cloudy. Lows 45 to 55. South winds 5 to 10 mph shifting to the west after midnight. .WEDNESDAY...Sunny. Highs 75 to 85. .WEDNESDAY NIGHT...Colder. Partly cloudy. Lows 40 to 50. .THURSDAY...Sunny. Highs 70 to 80. .THURSDAY NIGHT...Mostly clear. Lows 40 to 50. .FRIDAY...Sunny. Highs 70 to 80. .FRIDAY NIGHT AND SATURDAY...Mostly clear. Lows 45 to 50. Highs 75 to 85. .SATURDAY NIGHT...Partly cloudy. Lows 45 to 50. .SUNDAY...Partly cloudy with a 20 percent chance of rain showers. Highs 70 to 80. $$ MTZ328-181000- Beaverhead and Western Madison below 6000ft- Including Bannack, Dillon, Glen, and Waterloo 216 PM MDT Sun Aug 17 2025 .TONIGHT...Mostly cloudy with chance of rain showers and slight chance of thunderstorms in the evening, then mostly clear after midnight. Lows around 50. Southeast winds up to 10 mph. Chance of precipitation 50 percent. .MONDAY...Sunny 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. .MONDAY NIGHT...Mostly clear. Lows 50 to 55. South winds up to 10 mph. .TUESDAY...Warmer, sunny. Highs 85 to 95. South winds 5 to 15 mph. .TUESDAY NIGHT...Mostly clear. Lows 50 to 55. South winds 5 to 15 mph. .WEDNESDAY...Sunny. Highs 85 to 90. .WEDNESDAY NIGHT...Partly cloudy. Lows 50 to 55. .THURSDAY...Sunny. Highs 80 to 85. .THURSDAY NIGHT...Mostly clear. Lows 45 to 50. .FRIDAY...Sunny. Highs 80 to 85. .FRIDAY NIGHT AND SATURDAY...Mostly clear. Lows 45 to 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 85. && TEMPERATURE / PRECIPITATION Dillon 48 86 50 92 / 50 20 0 0 $$ MTZ329-181000- Ruby Mountains and Southern Beaverhead Mountains- Including Monida Pass 216 PM MDT Sun Aug 17 2025 .TONIGHT...Mostly cloudy with chance of rain showers and slight chance of thunderstorms in the evening, then mostly clear after midnight. Lows around 50. South winds up to 10 mph. Chance of precipitation 50 percent. .MONDAY...Sunny in the morning, then partly cloudy with a 20 percent chance of thunderstorms in the afternoon. Highs 70 to 80. South winds 5 to 15 mph. .MONDAY NIGHT...Mostly clear. Lows 50 to 55. South winds 5 to 15 mph. .TUESDAY...Sunny. Highs 80 to 85. South winds 5 to 15 mph. .TUESDAY NIGHT...Mostly clear. Lows 50 to 55. South winds 5 to 15 mph. Gusts up to 30 mph in the evening. .WEDNESDAY...Sunny. Highs 75 to 85. .WEDNESDAY NIGHT...Partly cloudy. Lows around 50. .THURSDAY...Sunny. Highs 75 to 80. .THURSDAY NIGHT...Mostly clear. Lows 45 to 50. .FRIDAY...Sunny. Highs 75 to 80. .FRIDAY NIGHT...Mostly clear. Lows 45 to 50. .SATURDAY...Sunny with a 20 percent chance of rain showers. Highs 75 to 80. .SATURDAY NIGHT...Partly cloudy with a 20 percent chance of rain showers. Lows 50 to 55. .SUNDAY...Partly cloudy with a 40 percent chance of rain showers. Highs 70 to 80. $$ http://www.weather.gov/greatfalls https://www.twitter.com/NWSGreatFalls https://www.facebook.com/NWSGreatFalls