FNUS55 KMSO 240813 FWFMSO Fire Weather Planning Forecast for Wrn Montana and N Cntrl Idaho National Weather Service Missoula MT 213 AM MDT Fri Apr 24 2026 .DISCUSSION... Idaho (Zones 102 and 103): Cold, cyclonic flow will remain over the Northern Rockies potentially through mid-next week. Expect cold mornings, unseasonably cool afternoons, with little to no drying trend in the near term. Northwest MT (Zones 104 and 105): Cold, cyclonic flow will remain over the Northern Rockies potentially through mid-next week. Expect cold mornings, unseasonably cool afternoons, with little to no drying trend in the near term. West Central MT (Zones 106, 107 and 108): Cold, cyclonic flow will remain over the Northern Rockies potentially through mid-next week. Expect cold mornings, unseasonably cool afternoons, with little to no drying trend in the near term. Southwest MT (Zones 109, 110 and 111): Cold, cyclonic flow will remain over the Northern Rockies potentially through mid-next week. Expect cold mornings, unseasonably cool afternoons, with little to no drying trend in the near term. IDZ102-103-250815- Palouse/Hells Canyon-Clearwater/Nez Perce- 113 AM PDT Fri Apr 24 2026 .TODAY... * Sky/Weather.........Partly cloudy. Widespread frost in the morning. Chance of snow. * Max Temperature.....45-55 valleys and 33-43 ridges. * Min Humidity........35-45 percent valleys and 41-51 percent ridges. * 20-Foot Winds....... * Lower Elevation......Calm to variable less than 7 mph. * Ridge Top............Northwest 5-15 mph. * Mixing Height.......2 kft agl until 0900. 8 kft agl after 1100. * Transport Winds.....North 10 mph. * Chance Lightning....Near 0 percent. * CWR (> 0.10 Inch)...10 percent. .TONIGHT... * Sky/Weather.........Partly cloudy. Widespread frost after midnight. * Min Temperature.....25-30 valleys and 18-28 ridges. * Max Humidity........73-83 percent valleys and 63-73 percent ridges. * 20-Foot Winds....... * Lower Elevation......Northwest 5-10 mph in the evening becoming downslope/downvalley 2-5 mph. * Ridge Top............North 5-15 mph becoming east 5-10 mph after midnight. * Mixing Height.......7 kft agl until 1900. Below 500 ft to 1 kft agl after 2000. * Transport Winds.....North 10 mph until 2300, then variable less than 10 mph. * Chance Lightning....Near 0 percent. * CWR (> 0.10 Inch)...0 percent. .SATURDAY... * Sky/Weather.........Partly cloudy. Widespread frost in the morning. * Max Temperature.....50-60 valleys and 35-45 ridges. * Min Humidity........31-41 percent valleys and 40-50 percent ridges. * 20-Foot Winds....... * Lower Elevation......Calm to becoming upslope/upvalley 4-8 mph in the afternoon. * Ridge Top............East 5-10 mph becoming northwest in the afternoon. * Mixing Height.......3 kft agl until 1000. 10 kft agl after 1200. * Transport Winds.....Variable less than 10 mph. * Chance Lightning....Near 0 percent. * CWR (> 0.10 Inch)...0 percent. .SUNDAY...Partly cloudy with chance of snow. Widespread frost. Chance of snow 30 percent. Lows 30-40. Highs 50-60. Min humidities 30-40 percent. North winds 5-10 mph. .MONDAY...Partly cloudy with chance of rain showers, snow and slight chance of thunderstorms. Chance of precipitation 30 percent. Lows 30-40. Highs 50-60. Min humidities 35-45 percent. West winds 5-10 mph. .TUESDAY...Partly cloudy with chance of rain, light freezing rain and snow. Chance of precipitation 30 percent. Lows 35-45. Highs 55-65. Southwest winds 5-10 mph. .WEDNESDAY...Partly cloudy with slight chance of rain. Chance of rain 20 percent. Lows 35-45. Highs 60-70. .THURSDAY...Partly cloudy. Lows 35-45. Highs 60-70. $$ MTZ104-105-250815- Kootenai-Flathead/Glacier Park- 213 AM MDT Fri Apr24 2026 .TODAY... * Sky/Weather.........Partly cloudy. Chance of snow. * Max Temperature.....45-55 valleys and 28-38 ridges. * Min Humidity........28-38 percent valleys and 47-57 percent ridges. * 20-Foot Winds....... * Lower Elevation......Northwest 10-15 mph. * Ridge Top............Northwest 10-20 mph. * Mixing Height.......3 kft agl until 0900. 8 kft agl after 1500. * Transport Winds.....North 15 mph until 1200, then northwest 20 mph. * Chance Lightning....Near 0 percent. * CWR (> 0.10 Inch)...0 percent over the Kootenai...and 20 percent toward the Flathead/Glacier Park. .TONIGHT... * Sky/Weather.........Mostly cloudy. Slight chance of snow. Widespread frost after midnight. * Min Temperature.....18-28. * Max Humidity........74-84 percent valleys and 67-77 percent ridges. * 20-Foot Winds....... * Lower Elevation......Variable less than 5 mph in the evening becoming downslope/downvalley 1-3 mph. * Ridge Top............North 10-20 mph. * Mixing Height.......5 kft agl until 2000, then 1-2 kft agl. * Transport Winds.....North 15 mph until 2400, then northeast 10 mph. * Chance Lightning....Near 0 percent. * CWR (> 0.10 Inch)...0 percent. .SATURDAY... * Sky/Weather.........Mostly cloudy. Chance of snow. * Max Temperature.....45-55 valleys and 30-40 ridges. * Min Humidity........29-39 percent valleys and 49-59 percent ridges. * 20-Foot Winds....... * Lower Elevation......Calm to becoming upslope/upvalley 4-8 mph in the afternoon. * Ridge Top............Northeast 5-15 mph becoming north 5-10 mph in the afternoon. * Mixing Height.......3 kft agl until 0900. 8 kft agl after 1300. * Transport Winds.....Northeast 10 mph until 1400, then variable less than 10 mph. * Chance Lightning....Near 0 percent. * CWR (> 0.10 Inch)...0 percent. .SUNDAY...Mostly cloudy with chance of snow. Chance of snow 30 percent. Lows 25-35. Highs 40-50. Min humidities 30-40 percent. Northeast winds 10-15 mph. .MONDAY...Partly cloudy with slight chance of snow. Widespread frost. Chance of snow 20 percent. Lows 25-35. Highs 45-55. Min humidities 30-40 percent. East winds 10-15 mph. .TUESDAY...Partly cloudy with chance of rain and snow. Chance of precipitation 30 percent. Lows 30-40. Highs 45-55. Southwest winds 10-15 mph. .WEDNESDAY...Partly cloudy with chance of snow and slight chance of rain. Chance of precipitation 30 percent. Lows 30-40. Highs 50-60. .THURSDAY...Partly cloudy. Lows 30-40. Highs 55-65. $$ MTZ106-108-250815- West Lolo-East Lolo- 213 AM MDT Fri Apr 24 2026 .TODAY... * Sky/Weather.........Partly cloudy. Widespread frost in the morning. Chance of snow. * Max Temperature.....40-50 valleys and 30-40 ridges. * Min Humidity........32-42 percent valleys and 45-55 percent ridges. * 20-Foot Winds....... * Lower Elevation......Northwest 5-15 mph. * Ridge Top............Northwest 10-20 mph. * Mixing Height.......1-2 kft agl until 0900. 7 kft agl after 1100. * Transport Winds.....Northwest 15 mph. * Chance Lightning....Near 0 percent. * CWR (> 0.10 Inch)...10 percent. .TONIGHT... * Sky/Weather.........Partly cloudy. Slight chance of snow. Widespread frost after midnight. * Min Temperature.....15-25. * Max Humidity........70-80 percent. * 20-Foot Winds....... * Lower Elevation......Northwest 5-10 mph in the evening becoming downslope/downvalley 2-5 mph. * Ridge Top............Northwest 10-20 mph becoming north 5-10 mph after midnight. * Mixing Height.......5 kft agl until 2000, then below 500 ft to 1 kft agl. * Transport Winds.....Northwest 15 mph until 2100, then variable less than 10 mph. * Chance Lightning....Near 0 percent. * CWR (> 0.10 Inch)...0 percent. .SATURDAY... * Sky/Weather.........Partly cloudy. Widespread frost in the morning. * Max Temperature.....45-50 valleys and 35-45 ridges. * Min Humidity........29-39 percent valleys and 43-53 percent ridges. * 20-Foot Winds....... * Lower Elevation......Calm to variable less than 7 mph. * Ridge Top............East 5-10 mph. * Mixing Height.......3 kft agl until 1000. 8 kft agl after 1200. * Transport Winds.....East 10 mph until 1400, then south 10 mph until 1700, then variable less than 10 mph. * Chance Lightning....Near 0 percent. * CWR (> 0.10 Inch)...0 percent. .SUNDAY...Mostly cloudy with slight chance of snow. Chance of snow 20 percent. Lows 25-35. Highs 40-50. Min humidities 35-45 percent. Northeast winds 10-15 mph. .MONDAY...Partly cloudy with chance of snow. Widespread frost. Chance of snow 30 percent. Lows 25-35. Highs 45-55. Min humidities 35-45 percent. East winds 10-15 mph. .TUESDAY...Partly cloudy with chance of rain and snow. Chance of precipitation 30 percent. Lows 30-40. Highs 50-60. Southwest winds 5-10 mph. .WEDNESDAY...Partly cloudy with slight chance of rain and snow. Chance of precipitation 20 percent. Lows 30-40. Highs 55-65. .THURSDAY...Partly cloudy. Lows 35-45. Highs 55-65. $$ MTZ107-250815- Flathead Reservation- 213 AM MDT Fri Apr 24 2026 .TODAY... * Sky/Weather.........Partly cloudy. Widespread frost in the morning. Slight chance of snow. * Max Temperature.....45-50 valleys and 25-30 ridges. * Min Humidity........34-44 percent valleys and 48-58 percent ridges. * 20-Foot Winds....... * Lower Elevation......North 5-15 mph. * Ridge Top............North 15-25 mph. * Mixing Height.......2 kft agl until 0900. 7 kft agl after 1300. * Transport Winds.....North 15 mph. * Chance Lightning....Near 0 percent. * CWR (> 0.10 Inch)...0 percent. .TONIGHT... * Sky/Weather.........Partly cloudy. Widespread frost after midnight. * Min Temperature.....25-30 valleys and 15-20 ridges. * Max Humidity........66-76 percent valleys and 76-86 percent ridges. * 20-Foot Winds....... * Lower Elevation......Variable less than 5 mph in the evening becoming downslope/downvalley 1-3 mph. * Ridge Top............Northwest 15-25 mph becoming north 5-15 mph after midnight. * Mixing Height.......5 kft agl until 2000, then below 500 ft to 1 kft agl. * Transport Winds.....Northwest 10 mph until 2100, then variable less than 10 mph. * Chance Lightning....Near 0 percent. * CWR (> 0.10 Inch)...0 percent. .SATURDAY... * Sky/Weather.........Partly cloudy. Widespread frost in the morning. * Max Temperature.....50-55 valleys and 30-35 ridges. * Min Humidity........33-43 percent valleys and 39-49 percent ridges. * 20-Foot Winds....... * Lower Elevation......Calm to becoming upslope/upvalley 4-8 mph in the afternoon. * Ridge Top............East 5-15 mph becoming northwest 10-15 mph in the afternoon. * Mixing Height.......2 kft agl until 0900. 7 kft agl after 1300. * Transport Winds.....Variable less than 10 mph. * Chance Lightning....Near 0 percent. * CWR (> 0.10 Inch)...0 percent. .SUNDAY...Partly cloudy with slight chance of snow. Chance of snow 20 percent. Lows 25-35. Highs 45-55. Min humidities 30-40 percent. Northeast winds 10-15 mph. .MONDAY...Partly cloudy with slight chance of rain and snow. Widespread frost. Chance of precipitation 20 percent. Lows 25-35. Highs 50-60. Min humidities 30-40 percent. Northeast winds 5-10 mph. .TUESDAY...Partly cloudy with chance of rain. Chance of rain 30 percent. Lows 35-45. Highs 55-65. Southwest winds 5-10 mph. .WEDNESDAY...Partly cloudy with slight chance of rain. Chance of rain 20 percent. Lows 35-45. Highs 55-65. .THURSDAY...Partly cloudy. Lows 35-45. Highs 60-70. $$ MTZ109-250815- Bitterroot-213 AM MDT Fri Apr 24 2026 .TODAY... * Sky/Weather.........Partly cloudy. Chance of snow. * Max Temperature.....45-50 valleys and 30-35 ridges. * Min Humidity........33-43 percent valleys and 49-59 percent ridges. * 20-Foot Winds....... * Lower Elevation......Northwest 5-15 mph. * Ridge Top............Northwest 5-15 mph. * Mixing Height.......3 kft agl until 0900. 7 kft agl after 1200. * Transport Winds.....North 15 mph. * Chance Lightning....Near 0 percent. * CWR (> 0.10 Inch)...20 percent. .TONIGHT... * Sky/Weather.........Partly cloudy. Widespread frost. * Min Temperature.....13-23. * Max Humidity........68-78 percent. * 20-Foot Winds....... * Lower Elevation......Northwest 5-10 mph in the evening becoming downslope/downvalley 2-5 mph. * Ridge Top............Northwest 10-20 mph becoming southeast 5-10 mph after midnight. * Mixing Height.......5 kft agl until 2000, then 1-2 kft agl. * Transport Winds.....North 10 mph until 2300. Variable less than 10 mph after 0200. * Chance Lightning....Near 0 percent. * CWR (> 0.10 Inch)...0 percent. .SATURDAY... * Sky/Weather.........Partly cloudy. Widespread frost in the morning. * Max Temperature.....50-55 valleys and 35-40 ridges. * Min Humidity........28-38 percent valleys and 46-56 percent ridges. * 20-Foot Winds....... * Lower Elevation......Calm to becoming upslope/upvalley 4-8 mph in the afternoon. * Ridge Top............Southeast 5-10 mph becoming west in the afternoon. * Mixing Height.......3 kft agl until 1000, then 4 kft agl until 1100, then 7 kft agl until 1300, then 8 kft agl until 1700, then 6 kft agl. * Transport Winds.....Variable less than 10 mph until 1100, then southwest 10 mph until 1700, then northwest 10 mph. * Chance Lightning....Near 0 percent. * CWR (> 0.10 Inch)...0 percent. .SUNDAY...Mostly cloudy with slight chance of snow. Chance of snow 20 percent. Lows 25-35. Highs 40-50. Min humidities 35-45 percent. North winds 10-15 mph. .MONDAY...Mostly cloudy with chance of snow. Chance of snow 30 percent. Lows 25-35. Highs 45-55. Min humidities 30-40 percent. Northwest winds 10-15 mph. .TUESDAY...Partly cloudy with slight chance of snow. Chance of snow 20 percent. Lows 25-35. Highs 45-55. West winds 10-15 mph. .WEDNESDAY...Partly cloudy with slight chance of rain and snow. Chance of precipitation 20 percent. Lows 30-40. Highs 50-60. .THURSDAY...Partly cloudy. Lows 30-40. Highs 55-65. $$ MTZ110-111-250815- Deerlodge/West Beaverhead-East Beaverhead- 213 AM MDT Fri Apr 24 2026 .TODAY... * Sky/Weather.........Mostly cloudy. Chance of snow showers. * Max Temperature.....35-40 valleys and 25-30 ridges. * Min Humidity........32-42 percent valleys and 40-50 percent ridges. * 20-Foot Winds....... * Lower Elevation......Northwest 5-15 mph. * Ridge Top............Northwest 5-15 mph. * Mixing Height.......3 kft agl until 0900. 7 kft agl after 1100. * Transport Winds.....Northwest 15 mph. * Chance Lightning....Near 0 percent. * CWR (> 0.10 Inch)...10 percent. .TONIGHT... * Sky/Weather.........Partly cloudy. Widespread frost after midnight. * Min Temperature.....10-15. * Max Humidity........75-85 percent. * 20-Foot Winds....... * Lower Elevation......Northwest 5-10 mph in the evening becoming downslope/downvalley 2-5 mph. * Ridge Top............Northwest 5-15 mph. * Mixing Height.......5 kft agl until 2000, then below 500 ft to 1 kft agl. * Transport Winds.....Northwest 15 mph until 2200, then variable less than 10 mph. * Chance Lightning....Near 0 percent. * CWR (> 0.10 Inch)...0 percent. .SATURDAY... * Sky/Weather.........Partly cloudy. Slight chance of snow showers in the morning. * Max Temperature.....40-50 valleys and 30-35 ridges. * Min Humidity........31-41 percent valleys and 40-50 percent ridges. * 20-Foot Winds....... * Lower Elevation......Calm to variable less than 7 mph. * Ridge Top............South 5-10 mph becoming southwest 5-15 mph in the afternoon. * Mixing Height.......3 kft agl until 1000. 8 kft agl after 1200. * Transport Winds.....Variable less than 10 mph until 1100, then southwest 10 mph. * Chance Lightning....Near 0 percent. * CWR (> 0.10 Inch)...10 percent. .SUNDAY...Mostly cloudy with chance of snow showers. Chance of snow 30 percent. Lows 20-30. Highs 40-50. Min humidities 35-45 percent. Northeast winds 10-15 mph. .MONDAY...Mostly cloudy with chance of snow. Chance of snow 40 percent. Lows 25-35. Highs 40-50. Min humidities 30-40 percent. North winds 10-15 mph. .TUESDAY...Partly cloudy with slight chance of snow. Chance of snow 20 percent. Lows 25-35. Highs 45-55. West winds 10-15 mph. .WEDNESDAY...Partly cloudy with slight chance of rain and snow. Chance of precipitation 20 percent. Lows 30-40. Highs 50-60. .THURSDAY...Partly cloudy with slight chance of snow. Chance of snow 20 percent. Lows 30-40. Highs 50-60. $$