Zone Forecast Product
Issued by NWS Missoula, MT
Issued by NWS Missoula, MT
059 FPUS55 KMSO 181822 ZFPMSO Zone Forecast Product National Weather Service Missoula MT 1222 PM MDT Tue Aug 18 2026 MTZ001-191000- Kootenai/Cabinet Region- Including the cities of Libby and Eureka 1222 PM MDT Tue Aug 18 2026 .TONIGHT...Mostly clear. Lows in the upper 40s to mid 50s. .WEDNESDAY...Partly cloudy. Highs in the mid 80s to lower 90s. .WEDNESDAY NIGHT...Partly cloudy. Lows in the upper 40s to mid 50s. .THURSDAY...Mostly sunny. Highs in the 90s. .THURSDAY NIGHT...Mostly clear. Lows in the 50s. .FRIDAY...Partly cloudy. Highs in the 90s. .FRIDAY NIGHT...Mostly cloudy. A 20 percent chance of rain after midnight. Lows in the mid 50s to lower 60s. .SATURDAY...Mostly cloudy. Slight chance of rain in the morning, then slight chance of showers and thunderstorms in the afternoon. Chance of precipitation 20 percent. Highs in the 80s to lower 90s. .SATURDAY NIGHT...Mostly cloudy with a chance of rain showers and a slight chance of thunderstorms in the evening, then partly cloudy with a slight chance of rain after midnight. Chance of precipitation 30 percent. Lows in the upper 40s to mid 50s. .SUNDAY...Mostly sunny with a 20 percent chance of rain. Highs in the upper 70s to mid 80s. .SUNDAY NIGHT...Mostly clear. Lows in the mid 40s to lower 50s. .MONDAY...Mostly sunny. Highs in the 80s. .MONDAY NIGHT...Mostly clear. Lows in the upper 40s to mid 50s. .TUESDAY...Partly cloudy. Highs in the mid 80s to lower 90s. $$ MTZ002-191000- West Glacier Region- Including the city of Swan Lake 1222 PM MDT Tue Aug 18 2026 .TONIGHT...Mostly clear. Lows in the upper 40s to mid 50s. Southwest winds to 15 mph in the evening. .WEDNESDAY...Mostly sunny. Highs in the 70s to lower 80s. .WEDNESDAY NIGHT...Partly cloudy. Lows in the upper 40s to mid 50s. .THURSDAY...Mostly sunny. Highs in the upper 70s to mid 80s. .THURSDAY NIGHT...Mostly clear. Lows in the 50s. .FRIDAY...Partly cloudy. Highs in the upper 70s to mid 80s. .FRIDAY NIGHT...Mostly cloudy. A 20 percent chance of showers and thunderstorms after midnight. Lows in the mid 50s to lower 60s. .SATURDAY...Mostly cloudy. Slight chance of rain in the morning, then slight chance of showers and thunderstorms in the afternoon. Chance of precipitation 20 percent. Highs in the 70s to lower 80s. .SATURDAY NIGHT...Mostly cloudy. Chance of rain showers and a slight chance of thunderstorms in the evening, then a chance of rain after midnight. Chance of precipitation 40 percent. Lows in the upper 40s to mid 50s. .SUNDAY...Mostly sunny. A 20 percent chance of rain in the morning. Highs in the upper 60s to mid 70s. .SUNDAY NIGHT...Mostly clear. Lows in the mid 40s to lower 50s. .MONDAY...Mostly sunny. Highs in the 70s. .MONDAY NIGHT...Mostly clear. Lows in the upper 40s to mid 50s. .TUESDAY...Partly cloudy. Highs in the mid 70s to lower 80s. $$ MTZ003-191000- Flathead/Mission Valleys- Including the cities of Kalispell, Polson, and St. Ignatius 1222 PM MDT Tue Aug 18 2026 .TONIGHT...Mostly clear. Lows in the upper 40s to mid 50s. West winds to 15 mph in the evening. .WEDNESDAY...Mostly sunny. Highs in the 80s. .WEDNESDAY NIGHT...Partly cloudy. Lows in the upper 40s to mid 50s. .THURSDAY...Mostly sunny. Highs in the mid 80s to lower 90s. .THURSDAY NIGHT...Mostly clear. Lows in the upper 40s to mid 50s. .FRIDAY...Partly cloudy. Highs in the mid 80s to lower 90s. .FRIDAY NIGHT...Mostly cloudy. A 20 percent chance of showers and thunderstorms after midnight. Lows in the 50s to lower 60s. .SATURDAY...Mostly cloudy. A 20 percent chance of showers and thunderstorms in the afternoon. Highs in the 80s. .SATURDAY NIGHT...Mostly cloudy with a chance of rain showers and a slight chance of thunderstorms in the evening, then partly cloudy with a chance of rain after midnight. Chance of precipitation 40 percent. Lows in the upper 40s to mid 50s. .SUNDAY...Mostly sunny with a 20 percent chance of rain. Highs in the mid 70s to lower 80s. .SUNDAY NIGHT...Mostly clear. Lows in the mid 40s to lower 50s. .MONDAY...Mostly sunny. Highs in the upper 70s to mid 80s. .MONDAY NIGHT...Mostly clear. Lows in the upper 40s to mid 50s. .TUESDAY...Partly cloudy. Highs in the 80s. $$ MTZ004-191000- Lower Clark Fork Region- Including the cities of Noxon, Thompson Falls, and Superior 1222 PM MDT Tue Aug 18 2026 .TONIGHT...Mostly clear. Lows in the upper 40s to mid 50s. West winds to 15 mph in the evening. .WEDNESDAY...Mostly sunny. Highs in the 80s. .WEDNESDAY NIGHT...Partly cloudy. Lows in the upper 40s to mid 50s. .THURSDAY...Mostly sunny. Highs in the upper 80s to mid 90s. .THURSDAY NIGHT...Mostly clear. Lows in the mid 50s to lower 60s. .FRIDAY...Partly cloudy. Highs in the upper 80s to mid 90s. .FRIDAY NIGHT...Mostly cloudy. A 20 percent chance of showers and thunderstorms after midnight. Lows in the mid 50s to lower 60s. .SATURDAY...Mostly cloudy. Slight chance of rain in the morning, then slight chance of showers and thunderstorms in the afternoon. Chance of precipitation 20 percent. Highs in the 80s. .SATURDAY NIGHT...Mostly cloudy with a chance of rain showers and a slight chance of thunderstorms in the evening, then partly cloudy with a slight chance of rain after midnight. Chance of precipitation 40 percent. Lows in the upper 40s to mid 50s. .SUNDAY...Mostly sunny. Highs in the upper 70s to mid 80s. .SUNDAY NIGHT...Mostly clear. Lows in the upper 40s to mid 50s. .MONDAY...Mostly sunny. Highs in the 80s. .MONDAY NIGHT...Mostly clear. Lows in the 50s. .TUESDAY...Mostly sunny. Highs in the mid 80s to lower 90s. $$ MTZ005-191000- Missoula/Bitterroot Valleys- Including the cities of Hamilton and Darby 1222 PM MDT Tue Aug 18 2026 .TONIGHT...Mostly clear. Lows near 50. Northwest winds to 15 mph in the evening. .WEDNESDAY...Mostly sunny. Highs in the mid to upper 80s. .WEDNESDAY NIGHT...Partly cloudy. Lows near 50. .THURSDAY...Mostly sunny. Highs near 90. .THURSDAY NIGHT...Mostly clear. Lows in the 50s. .FRIDAY...Partly cloudy. Highs in the upper 80s to mid 90s. .FRIDAY NIGHT...Mostly cloudy with a 20 percent chance of rain. Lows in the mid to upper 50s. .SATURDAY...Mostly cloudy. Chance of rain showers and a slight chance of thunderstorms in the afternoon. Chance of precipitation 40 percent. Highs in the mid to upper 80s. .SATURDAY NIGHT...Mostly cloudy with a chance of rain showers and a slight chance of thunderstorms in the evening, then mostly clear with a slight chance of rain after midnight. Chance of precipitation 40 percent. Lows near 50. .SUNDAY...Mostly sunny. Highs in the lower 80s. .SUNDAY NIGHT...Mostly clear. Lows near 50. .MONDAY...Mostly sunny. Highs in the mid to upper 80s. .MONDAY NIGHT...Partly cloudy. Lows in the lower to mid 50s. .TUESDAY...Partly cloudy. A 20 percent chance of showers and thunderstorms in the afternoon. Highs in the mid to upper 80s. $$ MTZ006-191000- Bitterroot/Sapphire Mountains- Including the city of Sula 1222 PM MDT Tue Aug 18 2026 .TONIGHT...Mostly clear. Lows in the mid 40s to lower 50s. .WEDNESDAY...Mostly sunny. Highs in the mid 70s to lower 80s. .WEDNESDAY NIGHT...Mostly clear. Lows in the mid 40s to lower 50s. .THURSDAY...Mostly sunny. Highs in the 80s to lower 90s. .THURSDAY NIGHT...Partly cloudy. Lows in the 50s. .FRIDAY...Partly cloudy. Highs in the mid 80s to lower 90s. .FRIDAY NIGHT...Mostly cloudy. A 30 percent chance of rain in the evening. Lows in the 50s. .SATURDAY...Mostly cloudy. Slight chance of rain in the morning, then chance of showers and thunderstorms in the afternoon. Chance of precipitation 40 percent. Highs in the mid 70s to lower 80s. .SATURDAY NIGHT...Partly cloudy. A 20 percent chance of showers and thunderstorms in the evening. Lows in the mid 40s to lower 50s. .SUNDAY...Mostly sunny. Highs in the 70s to lower 80s. .SUNDAY NIGHT...Mostly clear. Lows in the mid 40s to lower 50s. .MONDAY...Mostly sunny. Highs in the mid 70s to lower 80s. .MONDAY NIGHT...Partly cloudy. Lows in the mid 40s to lower 50s. .TUESDAY...Partly cloudy. Chance of rain showers and a slight chance of thunderstorms in the afternoon. Chance of precipitation 30 percent. Highs in the mid 70s to lower 80s. $$ MTZ007-191000- Butte/Blackfoot Region- Including the cities of Anaconda, Deer Lodge, and Drummond 1222 PM MDT Tue Aug 18 2026 .TONIGHT...Partly cloudy. A 20 percent chance of rain in the evening. Lows in the 40s. West winds to 15 mph in the evening. .WEDNESDAY...Mostly sunny. Highs in the mid 70s to lower 80s. .WEDNESDAY NIGHT...Partly cloudy. Lows in the mid 40s to lower 50s. .THURSDAY...Mostly sunny. Highs in the 80s. .THURSDAY NIGHT...Partly cloudy. Lows in the upper 40s to mid 50s. .FRIDAY...Partly cloudy. Highs in the 80s. .FRIDAY NIGHT...Mostly cloudy. Chance of rain showers and a slight chance of thunderstorms in the evening, then slight chance of rain after midnight. Chance of precipitation 50 percent. Lows in the upper 40s to mid 50s. .SATURDAY...Mostly cloudy. Slight chance of rain in the morning, then chance of showers and thunderstorms in the afternoon. Chance of precipitation 50 percent. Highs in the upper 70s to mid 80s. .SATURDAY NIGHT...Mostly cloudy with a chance of rain showers and a slight chance of thunderstorms in the evening, then partly cloudy with a slight chance of rain after midnight. Chance of precipitation 30 percent. Lows in the mid 40s to lower 50s. .SUNDAY...Mostly sunny. Highs in the 70s. .SUNDAY NIGHT...Mostly clear. Lows in the 40s to lower 50s. .MONDAY...Mostly sunny. Highs in the mid 70s to lower 80s. .MONDAY NIGHT...Partly cloudy. A 20 percent chance of showers and thunderstorms in the evening. Lows in the mid 40s to lower 50s. .TUESDAY...Partly cloudy. A 20 percent chance of showers and thunderstorms in the afternoon. Highs in the mid 70s to lower 80s. $$ MTZ043-191000- Potomac/Seeley Lake Region- Including the cities of East Missoula, Seeley Lake, and Clinton 1222 PM MDT Tue Aug 18 2026 .TONIGHT...Mostly clear. Lows in the mid 40s to lower 50s. .WEDNESDAY...Mostly sunny. Highs in the upper 70s to mid 80s. .WEDNESDAY NIGHT...Partly cloudy. Lows in the upper 40s to mid 50s. .THURSDAY...Mostly sunny. Highs in the 80s. .THURSDAY NIGHT...Mostly clear. Lows in the 50s. .FRIDAY...Partly cloudy. Highs in the mid 80s to lower 90s. .FRIDAY NIGHT...Mostly cloudy. A 20 percent chance of rain after midnight. Lows in the 50s to lower 60s. .SATURDAY...Mostly cloudy. A 20 percent chance of showers and thunderstorms in the afternoon. Highs in the upper 70s to mid 80s. .SATURDAY NIGHT...Mostly cloudy with a chance of rain showers and a slight chance of thunderstorms in the evening, then partly cloudy with a slight chance of rain after midnight. Chance of precipitation 30 percent. Lows in the upper 40s to mid 50s. .SUNDAY...Mostly sunny. Highs in the 70s to lower 80s. .SUNDAY NIGHT...Mostly clear. Lows in the mid 40s to lower 50s. .MONDAY...Mostly sunny. Highs in the upper 70s to mid 80s. .MONDAY NIGHT...Partly cloudy. Lows in the upper 40s to mid 50s. .TUESDAY...Partly cloudy. A 20 percent chance of showers and thunderstorms in the afternoon. Highs in the upper 70s to mid 80s. $$ IDZ009-191000- Western Lemhi County- Including the city of Shoup 1222 PM MDT Tue Aug 18 2026 .TONIGHT...Mostly clear. Lows in the 50s. .WEDNESDAY...Mostly sunny. Highs in the 80s. .WEDNESDAY NIGHT...Mostly clear. Lows in the 50s to lower 60s. .THURSDAY...Sunny. Highs in the mid 80s to lower 90s. .THURSDAY NIGHT...Partly cloudy. Lows in the upper 50s to mid 60s. .FRIDAY...Partly cloudy. A 20 percent chance of showers and thunderstorms in the afternoon. Highs in the mid 80s to lower 90s. .FRIDAY NIGHT...Mostly cloudy. A 40 percent chance of rain in the evening. Lows in the upper 50s to mid 60s. .SATURDAY...Mostly cloudy. A 40 percent chance of showers and thunderstorms in the afternoon. Highs in the upper 70s to mid 80s. .SATURDAY NIGHT...Partly cloudy. A 20 percent chance of showers and thunderstorms in the evening. Lows in the 50s. .SUNDAY...Partly cloudy in the morning then becoming sunny. Highs in the mid 70s to lower 80s. .SUNDAY NIGHT...Mostly clear. Lows in the 50s. .MONDAY...Mostly sunny. Highs in the upper 70s to mid 80s. .MONDAY NIGHT...Partly cloudy in the evening then becoming mostly cloudy. Lows in the 50s to lower 60s. .TUESDAY...Partly cloudy. Chance of rain showers and a slight chance of thunderstorms in the afternoon. Chance of precipitation 30 percent. Highs in the upper 70s to mid 80s. $$ IDZ010-191000- Eastern Lemhi County- Including the cities of Salmon and Leadore 1222 PM MDT Tue Aug 18 2026 .TONIGHT...Mostly clear. A 20 percent chance of rain early in the evening. Lows in the mid 40s to lower 50s. Northwest winds to 15 mph in the evening. .WEDNESDAY...Mostly sunny. Highs in the upper 70s to mid 80s. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 40s to mid 50s. .THURSDAY...Mostly sunny. Highs in the mid 80s to lower 90s. .THURSDAY NIGHT...Partly cloudy. Lows in the 50s to lower 60s. .FRIDAY...Partly cloudy. Highs in the mid 80s to lower 90s. .FRIDAY NIGHT...Mostly cloudy. Chance of rain showers and a slight chance of thunderstorms in the evening, then slight chance of rain after midnight. Chance of precipitation 50 percent. Lows in the mid 50s to lower 60s. .SATURDAY...Mostly cloudy. A 50 percent chance of showers and thunderstorms in the afternoon. Highs in the upper 70s to mid 80s. .SATURDAY NIGHT...Partly cloudy. A 20 percent chance of showers and thunderstorms in the evening. Lows in the upper 40s to mid 50s. .SUNDAY...Mostly sunny. Highs in the mid 70s to lower 80s. .SUNDAY NIGHT...Partly cloudy. Lows in the upper 40s to mid 50s. .MONDAY...Mostly sunny. A 20 percent chance of showers and thunderstorms in the afternoon. Highs in the mid 70s to lower 80s. .MONDAY NIGHT...Mostly cloudy. A 20 percent chance of showers and thunderstorms in the evening. Lows in the upper 40s to mid 50s. .TUESDAY...Mostly cloudy. A 40 percent chance of showers and thunderstorms in the afternoon. Highs in the mid 70s to lower 80s. $$ IDZ005-191000- Northern Clearwater Mountains- Including the cities of Pierce and Elk River 1122 AM PDT Tue Aug 18 2026 .TONIGHT...Mostly clear. Lows in the mid 40s to lower 50s. .WEDNESDAY...Mostly sunny. Highs in the 80s. .WEDNESDAY NIGHT...Mostly clear. Lows in the mid 40s to lower 50s. .THURSDAY...Sunny. Highs in the upper 80s to mid 90s. .THURSDAY NIGHT...Mostly clear. Lows in the upper 40s to mid 50s. .FRIDAY...Mostly cloudy. Highs in the 90s. .FRIDAY NIGHT...Mostly cloudy. Lows in the upper 40s to mid 50s. .SATURDAY...Mostly cloudy. Highs in the 80s. .SATURDAY NIGHT...Partly cloudy. Slight chance of showers and thunderstorms in the evening, then slight chance of rain after midnight. Chance of precipitation 20 percent. Lows in the 40s. .SUNDAY...Mostly sunny. Highs in the mid 70s to lower 80s. .SUNDAY NIGHT...Mostly clear. Lows in the 40s. .MONDAY...Mostly sunny. Highs in the 80s. .MONDAY NIGHT...Mostly clear. Lows in the mid 40s to lower 50s. .TUESDAY...Partly cloudy. Highs in the 80s. $$ IDZ006-191000- Southern Clearwater Mountains- Including the cities of Powell, Elk City, and Dixie 1122 AM PDT Tue Aug 18 2026 .TONIGHT...Mostly clear. Lows 42 to 57. .WEDNESDAY...Mostly sunny. Highs 76 to 91. .WEDNESDAY NIGHT...Mostly clear. Lows 43 to 58. .THURSDAY...Sunny. Highs 82 to 97. .THURSDAY NIGHT...Partly cloudy. Lows 49 to 64. .FRIDAY...Mostly cloudy. Highs 83 to 98. .FRIDAY NIGHT...Mostly cloudy. Lows 49 to 64. .SATURDAY...Mostly cloudy. A 20 percent chance of showers and thunderstorms in the afternoon. Highs 74 to 89. .SATURDAY NIGHT...Partly cloudy. A 20 percent chance of showers and thunderstorms in the evening. Lows 41 to 56. .SUNDAY...Mostly sunny. Highs 71 to 85. .SUNDAY NIGHT...Mostly clear. Lows 41 to 56. .MONDAY...Mostly sunny. Highs 76 to 91. .MONDAY NIGHT...Partly cloudy. Lows 44 to 59. .TUESDAY...Partly cloudy. Highs 76 to 91. $$ IDZ007-191000- Orofino/Grangeville Region- Including the city of Kooskia 1122 AM PDT Tue Aug 18 2026 .TONIGHT...Mostly clear. Lows in the mid 50s to lower 60s. .WEDNESDAY...Mostly sunny. Highs in the lower 80s to mid 90s. .WEDNESDAY NIGHT...Mostly clear. Lows in the mid 50s to lower 60s. .THURSDAY...Sunny, hot. Highs 87 to 101. .THURSDAY NIGHT...Partly cloudy. Lows in the upper 50s to mid 60s. .FRIDAY...Mostly cloudy. Highs 88 to 101. .FRIDAY NIGHT...Mostly cloudy. Lows in the 60s. .SATURDAY...Partly cloudy. A 20 percent chance of showers and thunderstorms in the afternoon. Highs in the 80s to lower 90s. .SATURDAY NIGHT...Partly cloudy. Slight chance of showers and thunderstorms in the evening, then slight chance of rain after midnight. Chance of precipitation 20 percent. Lows in the 50s. .SUNDAY...Mostly sunny. Highs in the 70s to upper 80s. .SUNDAY NIGHT...Mostly clear. Lows in the 50s. .MONDAY...Mostly sunny. Highs in the lower 80s to mid 90s. .MONDAY NIGHT...Mostly clear. Lows in the mid 50s to lower 60s. .TUESDAY...Partly cloudy. Highs in the lower 80s to mid 90s. $$ IDZ008-191000- Lower Hells Canyon/Salmon River Region- Including the cities of Riggins and White Bird 1122 AM PDT Tue Aug 18 2026 .TONIGHT...Mostly clear. Lows in the upper 50s to mid 60s. .WEDNESDAY...Mostly sunny. Hot. Highs in the mid 80s to upper 90s. .WEDNESDAY NIGHT...Mostly clear. Lows in the 60s. .THURSDAY...Mostly sunny. Hot. Highs 91 to 104. .THURSDAY NIGHT...Partly cloudy. Lows in the 60s to lower 70s. .FRIDAY...Mostly cloudy. Highs 91 to 104. .FRIDAY NIGHT...Mostly cloudy. Lows in the 60s to lower 70s. .SATURDAY...Partly cloudy. Highs in the 80s to mid 90s. .SATURDAY NIGHT...Mostly clear. A 20 percent chance of rain in the evening. Lows in the mid 50s to lower 60s. .SUNDAY...Mostly sunny. Highs in the 80s to lower 90s. .SUNDAY NIGHT...Mostly clear. Lows in the mid 50s to lower 60s. .MONDAY...Mostly sunny. Highs in the mid 80s to upper 90s. .MONDAY NIGHT...Partly cloudy. Lows in the upper 50s to mid 60s. .TUESDAY...Partly cloudy. A 20 percent chance of showers and thunderstorms in the afternoon. Highs in the mid 80s to upper 90s. $$