FNUS55 KMSO 062032 FWFMSO Fire Weather Planning Forecast for Wrn Montana and N Cntrl Idaho National Weather Service Missoula MT 231 PM MDT Sun Apr 6 2025 ...This planning forecast is now automated during the cool season. Please submit a spot request or contact NWS for decision support... NOTE: Haines Index and LAL values are no longer produced. .DISCUSSION... Idaho (Zones 102 and 103): Cold front passage on Monday will bring breezy winds and increased clouds/showers. Taking a quick look at the next 48 hours... Tonight's weather, mostly clear until midnight then becoming mostly cloudy. Monday, chance of rain showers in the day, then rain showers likely and a slight chance of thunderstorms in the afternoon. It'll be much cooler. Humidities will be higher. Monday Night, rain showers likely and a slight chance of thunderstorms until midnight, then rain and snow likely after midnight. Snow level 5500 feet. Tuesday, rain and snow likely in the day, then rain showers with pockets of snow showers and thunderstorms in the afternoon. It'll be cooler. Snow level 4500 feet. Northwest MT (Zones 104 and 105): Cold front passage on Monday will bring breezy winds and increased clouds/showers. Taking a quick look at the next 48 hours... Tonight's weather, partly cloudy. Monday, mostly cloudy with a 50 percent chance of rain. It'll be cooler. Humidities will be higher. Monday Night, mostly cloudy with a 50 percent chance of rain and snow. Tuesday, a chance of rain. Snow likely in the day, then a chance of snow in the afternoon. It'll be much colder. Snow level 4000 feet. West Central MT (Zones 106, 107 and 108): Cold front passage on Monday will bring breezy winds and increased clouds/showers. Taking a quick look at the next 48 hours... Tonight's weather, partly cloudy. Monday, mostly cloudy with a 50 percent chance of rain. Humidities will be higher. Monday Night, a chance of rain and snow likely until midnight, then rain and snow likely after midnight. Tuesday, mostly cloudy with a 50 percent chance of rain and snow. It'll be much colder. Southwest MT (Zones 109, 110 and 111): Cold front passage on Monday will bring breezy winds and increased clouds/showers. Taking a quick look at the next 48 hours... Tonight's weather, mostly clear. Monday, mostly cloudy. A 50 percent chance of rain in the afternoon. Humidities will be a little higher. Monday Night, rain showers likely with possible snow and thunderstorms until midnight, then rain and snow likely after midnight. Tuesday, a chance of rain. Snow likely in the day, then a chance of snow in the afternoon. It'll be much colder. Snow level 5500 feet. View Weather Briefing videos on our YouTube channel at https://www.youtube.com/NWSMissoula IDZ102-103-071000- Palouse/Hells Canyon-Clearwater/Nez Perce- 131 PM PDT Sun Apr 6 2025 .TONIGHT... * Sky/Weather.........Partly cloudy. * Min Temperature.....38-48 valleys and 35-40 ridges. * Max Humidity........66-76 percent valleys and 59-69 percent ridges. * 20-Foot Winds....... * Lower Elevation......Southeast 5-10 mph. * Ridge Top............Southeast 5-15 mph. * Mixing Height.......4 kft agl until 1900, then below 500 ft to 1 kft agl. * Transport Winds.....Southeast 10 mph. * Chance Lightning....Near 0 percent in the Palouse/Hells Canyon...and 0 percent in the Clearwater/Nez Perce. * CWR (> 0.10 Inch)...0 percent. .MONDAY... * Sky/Weather.........Mostly cloudy. Rain showers. Slight chance of thunderstorms in the afternoon. Snow level 7000 feet. * Max Temperature.....58-68 valleys and 50-55 ridges. * Min Humidity........42-52 percent. * 20-Foot Winds....... * Lower Elevation......Southwest 10-20 mph. * Ridge Top............Southwest 10-20 mph. * Mixing Height.......2 kft agl until 1100. 4 kft agl after 1400. * Transport Winds.....Southwest 15 mph. * Chance Lightning....25 percent in the Palouse/Hells Canyon...and 20 percent in the Clearwater/Nez Perce. * CWR (> 0.10 Inch)...80 percent in the Palouse/Hells Canyon...and 50 percent in the Clearwater/Nez Perce. .MONDAY NIGHT... * Sky/Weather.........Mostly cloudy. Rain showers and slight chance of thunderstorms in the evening, then rain and snow after midnight. Snow level 5500 feet. * Min Temperature.....35-45 valleys and 30-35 ridges. * Max Humidity........81-91 percent valleys and 87-93 percent ridges. * 20-Foot Winds....... * Lower Elevation......Southwest 10-15 mph. * Ridge Top............West 10-15 mph. * Mixing Height.......2 kft agl until 2000, then 1-2 kft agl. * Transport Winds.....West 15 mph. * Chance Lightning....30 percent in the Palouse/Hells Canyon...and 25 percent in the Clearwater/Nez Perce. * CWR (> 0.10 Inch)...90 percent. .TUESDAY... * Sky/Weather.........Partly cloudy. Snow and rain in the morning, then rain showers likely with possible snow showers and thunderstorms in the afternoon. Snow level 4500 feet. * Max Temperature.....53-63 valleys and 40-45 ridges. * Min Humidity........48-58 percent valleys and 55-65 percent ridges. * 20-Foot Winds....... * Lower Elevation......Calm to becoming 5-15 mph in the afternoon. * Ridge Top............West 10-20 mph. * Mixing Height.......2 kft agl until 0900, then 4 kft agl until 1200, then 6 kft agl until 1400, then 7 kft agl until 1700, then 6 kft agl. * Transport Winds.....West 15 mph. * Chance Lightning....25 percent in the Palouse/Hells Canyon...and 15 percent in the Clearwater/Nez Perce. * CWR (> 0.10 Inch)...20 percent in the Palouse/Hells Canyon...and 50 percent in the Clearwater/Nez Perce. .WEDNESDAY...Mostly cloudy with snow likely and chance of rain showers. Chance of precipitation 70 percent. Lows 35-45. Highs 50-60. Min humidities 30-40 percent. Southwest winds 10-15 mph. .THURSDAY...Warmer. Partly cloudy. Lows 30-40. Highs 65-75. Min humidities 25-35 percent. Southeast winds 5-10 mph. .FRIDAY...Mostly cloudy with chance of rain. Chance of rain 30 percent. Lows 40-50. Highs 60-70. Southwest winds 5-10 mph. .SATURDAY...Cooler. Mostly cloudy with chance of rain showers. Chance of showers 30 percent. Lows 40-50. Highs 50-60. .SUNDAY...Mostly cloudy with chance of rain showers and snow. Chance of precipitation 50 percent. Lows 30-40. Highs 50-60. $$ MTZ104-105-071000- Kootenai-Flathead/Glacier Park- 231 PM MDT Sun Apr 6 2025 .TONIGHT... * Sky/Weather.........Partly cloudy. * Min Temperature.....30-40. * Max Humidity........76-86 percent valleys and 62-72 percent ridges. * 20-Foot Winds....... * Lower Elevation......Downslope/downvalley 2-5 mph. * Ridge Top............Southwest 5-15 mph. * Mixing Height.......3 kft agl until 1900, then below 500 ft to 1 kft agl. * Transport Winds.....South 10 mph until 2400, then 10 mph. * Chance Lightning....0 percent. * CWR (> 0.10 Inch)...0 percent. .MONDAY... * Sky/Weather.........Partly cloudy. Chance of rain. Snow level 7000 feet. * Max Temperature.....55-65 valleys and 40-50 ridges. * Min Humidity........40-50 percent valleys and 55-65 percent ridges. * 20-Foot Winds....... * Lower Elevation......Southwest 10-20 mph. * Ridge Top............Southwest 15-25 mph. * Mixing Height.......1-2 kft agl until 1100. 5 kft agl after 1300. * Transport Winds.....South 15 mph until 1300, then southwest 25 mph. * Chance Lightning....Near 0 percent. * CWR (> 0.10 Inch)...10 percent. .MONDAY NIGHT... * Sky/Weather.........Partly cloudy. Chance of rain and snow. Snow level 5500 feet. * Min Temperature.....35-40 valleys and 25-35 ridges. * Max Humidity........84-94 percent valleys and 78-88 percent ridges. * 20-Foot Winds....... * Lower Elevation......Southwest 10-20 mph. * Ridge Top............Southwest 15-25 mph. * Mixing Height.......4 kft agl until 1900, then 1-2 kft agl. * Transport Winds.....Southwest 20 mph. * Chance Lightning....Near 0 percent. * CWR (> 0.10 Inch)...30 percent. .TUESDAY... * Sky/Weather.........Mostly cloudy. Snow likely and chance of rain. Snow level 4000 feet. * Max Temperature.....50-55 valleys and 35-45 ridges. * Min Humidity........43-53 percent valleys and 60-70 percent ridges. * 20-Foot Winds....... * Lower Elevation......Southwest 20-30 mph. * Ridge Top............Southwest 25-35 mph. * Mixing Height.......3 kft agl until 0900. 7 kft agl after 1300. * Transport Winds.....Southwest 20 mph until 1000, then west 30 mph. * Chance Lightning....Near 0 percent. * CWR (> 0.10 Inch)...20 percent. .WEDNESDAY...Mostly cloudy with chance of rain and snow. Chance of precipitation 50 percent. Lows 30-40. Highs 45-55. Min humidities 35-45 percent. Southwest winds 20-30 mph. .THURSDAY...Partly cloudy. Highs 55-65. Min humidities 25-35 percent. South winds 15-25 mph. .FRIDAY...Partly cloudy with slight chance of rain. Chance of rain 20 percent. Lows 35-45. Highs 55-65. South winds 10-20 mph. .SATURDAY...Partly cloudy with chance of rain and snow. Chance of precipitation 30 percent. Lows 35-45. Highs 50-60. .SUNDAY...Mostly cloudy with chance of rain and snow. Chance of precipitation 40 percent. Lows 30-40. Highs 45-55. $$ MTZ106-108-071000- West Lolo-East Lolo- 231 PM MDT Sun Apr 6 2025 .TONIGHT... * Sky/Weather.........Partly cloudy. * Min Temperature.....30-40. * Max Humidity........73-83 percent valleys and 54-64 percent ridges. * 20-Foot Winds....... * Lower Elevation......Downslope/downvalley 2-5 mph. * Ridge Top............Southwest 5-15 mph. * Mixing Height.......3 kft agl until 1900, then below 500 ft to 1 kft agl. * Transport Winds.....Southwest 10 mph until 2100, then south 10 mph. * Chance Lightning....0 percent. * CWR (> 0.10 Inch)...0 percent. .MONDAY... * Sky/Weather.........Partly cloudy. Chance of rain. Snow level 7000 feet. * Max Temperature.....50-60. * Min Humidity........35-45 percent valleys and 43-53 percent ridges. * 20-Foot Winds....... * Lower Elevation......Southwest 10-20 mph. * Ridge Top............Southwest 15-25 mph. * Mixing Height.......1-2 kft agl until 1100, then 3 kft agl until 1200, then 5 kft agl until 1400, then 6 kft agl until 1700, then 4 kft agl. * Transport Winds.....South 15 mph until 1200, then southwest 20 mph. * Chance Lightning....Near 0 percent. * CWR (> 0.10 Inch)...10 percent. .MONDAY NIGHT... * Sky/Weather.........Mostly cloudy. Rain and snow likely. Snow level 6000 feet. * Min Temperature.....30-35. * Max Humidity........77-87 percent. * 20-Foot Winds....... * Lower Elevation......West 5-15 mph. * Ridge Top............West 10-20 mph. * Mixing Height.......3 kft agl until 2000, then below 500 ft to 1 kft agl. * Transport Winds.....West 15 mph. * Chance Lightning....Near 0 percent. * CWR (> 0.10 Inch)...40 percent. .TUESDAY... * Sky/Weather.........Mostly cloudy. Chance of snow and rain. Snow level 4500 feet. * Max Temperature.....45-55 valleys and 38-48 ridges. * Min Humidity........41-51 percent valleys and 48-58 percent ridges. * 20-Foot Winds....... * Lower Elevation......Calm to becoming west 10-20 mph in the afternoon. * Ridge Top............West 20-30 mph. * Mixing Height.......2 kft agl until 0800. 8 kft agl after 1400. * Transport Winds.....West 20 mph until 1100, then 25 mph. * Chance Lightning....Near 0 percent. * CWR (> 0.10 Inch)...10 percent. .WEDNESDAY...Mostly cloudy with chance of snow and rain. Chance of precipitation 30 percent. Lows 30-40. Highs 45-55. Min humidities 25-35 percent. West winds 15-25 mph. .THURSDAY...Warmer. Partly cloudy. Highs 60-70. Min humidities 20-30 percent. South winds 10-20 mph. .FRIDAY...Partly cloudy with slight chance of rain. Chance of rain 20 percent. Lows 40-50. Highs 55-65. Southwest winds 10-15 mph. .SATURDAY...Partly cloudy with chance of rain and snow. Chance of precipitation 30 percent. Lows 35-45. Highs 50-60. .SUNDAY...Mostly cloudy with chance of rain and snow. Chance of precipitation 40 percent. Lows 30-40. Highs 45-55. $$ MTZ107-071000- Flathead Reservation- 231 PM MDT Sun Apr 6 2025 .TONIGHT... * Sky/Weather.........Partly cloudy. * Min Temperature.....35-45. * Max Humidity........59-69 percent. * 20-Foot Winds....... * Lower Elevation......Southeast 10-15 mph. * Ridge Top............South 10-20 mph. * Mixing Height.......4 kft agl until 1900. Below 500 ft to 1 kft agl after 2000. * Transport Winds.....Variable less than 10 mph until 2000, then southeast 10 mph. * Chance Lightning....0 percent. * CWR (> 0.10 Inch)...0 percent. .MONDAY... * Sky/Weather.........Mostly cloudy. Snow level 7000 feet. * Max Temperature.....65-70 valleys and 45-50 ridges. * Min Humidity........33-43 percent valleys and 44-54 percent ridges. * 20-Foot Winds....... * Lower Elevation......Southwest 10-20 mph. * Ridge Top............Southwest 10-20 mph increasing to 15-25 mph in the afternoon. * Mixing Height.......1-2 kft agl until 1100. 5 kft agl after 1400. * Transport Winds.....South 15 mph until 1300, then southwest 25 mph until 1700, then 15 mph. * Chance Lightning....Near 0 percent. * CWR (> 0.10 Inch)...0 percent in areas west of Highway 93...and 20 percent in the Mission Mtns and areas east of Highway 93. .MONDAY NIGHT... * Sky/Weather.........Mostly cloudy. Chance of rain. Snow likely after midnight. Snow level 5500 feet. * Min Temperature.....35-40 valleys and 25-30 ridges. * Max Humidity........74-84 percent valleys and 87-97 percent ridges. * 20-Foot Winds....... * Lower Elevation......Southwest 10-15 mph. * Ridge Top............Southwest 10-20 mph. * Mixing Height.......4 kft agl until 1900. Below 500 ft to 1 kft agl after 2000. * Transport Winds.....Southwest 15 mph. * Chance Lightning....Near 0 percent. * CWR (> 0.10 Inch)...20 percent in areas west of Highway 93...and 60 percent in the Mission Mtns and areas east of Highway 93. .TUESDAY... * Sky/Weather.........Mostly cloudy. Chance of rain and snow likely. Snow level 4000 feet. * Max Temperature.....55-60 valleys and 35-40 ridges. * Min Humidity........36-46 percent valleys and 54-64 percent ridges. * 20-Foot Winds....... * Lower Elevation......Calm to becoming 10-20 mph in the afternoon. * Ridge Top............West 15-25 mph increasing to 25-35 mph in the afternoon. * Mixing Height.......2 kft agl until 0800. 8 kft agl after 1300. * Transport Winds.....Southwest 20 mph until 1200, then west 25 mph. * Chance Lightning....Near 0 percent. * CWR (> 0.10 Inch)...0 percent in areas west of Highway 93...and 30 percent in the Mission Mtns and areas east of Highway 93. .WEDNESDAY...Mostly cloudy with chance of rain and snow. Chance of precipitation 40 percent. Lows 35-45. Highs 50-60. Min humidities 30-40 percent. Southwest winds 15-25 mph. .THURSDAY...Partly cloudy. Lows 30-40. Highs 60-70. Min humidities 20-30 percent. South winds 10-20 mph. .FRIDAY...Mostly cloudy with slight chance of rain. Chance of rain 20 percent. Lows 40-50. Highs 60-70. South winds 10-15 mph. .SATURDAY...Partly cloudy with chance of rain. Chance of rain 30 percent. Lows 40-50. Highs 55-65. .SUNDAY...Mostly cloudy with chance of rain and snow. Chance of precipitation 40 percent. Lows 35-45. Highs 50-60. $$ MTZ109-071000- Bitterroot- 231 PM MDT Sun Apr 6 2025 .TONIGHT... * Sky/Weather.........Partly cloudy. * Min Temperature.....30-40. * Max Humidity........61-71 percent valleys and 55-65 percent ridges. * 20-Foot Winds....... * Lower Elevation......Downslope/downvalley 2-5 mph. * Ridge Top............Southwest 5-15 mph. * Mixing Height.......3 kft agl until 1900, then 1-2 kft agl. * Transport Winds.....Variable less than 10 mph until 2100, then south 10 mph. * Chance Lightning....0 percent. * CWR (> 0.10 Inch)...0 percent. .MONDAY... * Sky/Weather.........Partly cloudy. Snow level 7000 feet. * Max Temperature.....65-70 valleys and 50-55 ridges. * Min Humidity........24-34 percent valleys and 42-52 percent ridges. * 20-Foot Winds....... * Lower Elevation......Southwest 10-20 mph. * Ridge Top............Southwest 15-25 mph. * Mixing Height.......1-2 kft agl until 1100, then 3 kft agl until 1200, then 4 kft agl until 1300, then 6 kft agl until 1700, then 5 kft agl. * Transport Winds.....South 15 mph until 1200, then southwest 25 mph. * Chance Lightning....Near 0 percent. * CWR (> 0.10 Inch)...20 percent. .MONDAY NIGHT... * Sky/Weather.........Mostly cloudy. Rain showers likely with possible snow showers and thunderstorms in the evening, then snow and rain after midnight. Snow level 6500 feet. * Min Temperature.....30-40 valleys and 25-30 ridges. * Max Humidity........75-85 percent. * 20-Foot Winds....... * Lower Elevation......Southwest 10-15 mph becoming variable less than 5 mph after midnight. * Ridge Top............Southwest 15-25 mph becoming west 5-15 mph after midnight. * Mixing Height.......4 kft agl until 1900, then 1-2 kft agl. * Transport Winds.....Southwest 15 mph until 0300, then west 10 mph. * Chance Lightning....20 percent. * CWR (> 0.10 Inch)...80 percent in the Darby, Sula, and West Fork Districts...and 60 percent in areas north of Hamilton. .TUESDAY... * Sky/Weather.........Mostly cloudy. Snow and chance of rain. Slight chance of thunderstorms in the afternoon. Snow level 4500 feet. * Max Temperature.....50-55 valleys and 35-40 ridges. * Min Humidity........32-42 percent valleys and 44-54 percent ridges. * 20-Foot Winds....... * Lower Elevation......Calm to becoming west 10-15 mph in the afternoon. * Ridge Top............West 15-25 mph. * Mixing Height.......3 kft agl until 0900. 8 kft agl after 1200. * Transport Winds.....West 15 mph until 1300, then 20 mph. * Chance Lightning....20 percent in the Darby, Sula, and West Fork Districts...and near 0 percent in areas north of Hamilton. * CWR (> 0.10 Inch)...40 percent in the Darby, Sula, and West Fork Districts...and 10 percent in areas north of Hamilton. .WEDNESDAY...Partly cloudy with chance of snow and rain. Chance of precipitation 30 percent. Lows 30-40. Highs 45-55. Min humidities 20-30 percent. West winds 10-20 mph. .THURSDAY...Warmer. Partly cloudy. Lows 25-35. Highs 60-70. Min humidities 15-25 percent. South winds 10-20 mph. .FRIDAY...Partly cloudy with slight chance of rain. Chance of rain 20 percent. Lows 35-45. Highs 60-70. Southwest winds 10-15 mph. .SATURDAY...Cooler. Mostly cloudy with chance of rain and snow. Chance of precipitation 30 percent. Lows 35-45. Highs 50-60. .SUNDAY...Mostly cloudy with chance of snow and rain. Chance of precipitation 40 percent. Lows 30-40. Highs 45-55. $$ MTZ110-111-071000- Deerlodge/West Beaverhead-East Beaverhead- 231 PM MDT Sun Apr 6 2025 .TONIGHT... * Sky/Weather.........Partly cloudy. * Min Temperature.....25-35. * Max Humidity........59-69 percent valleys and 51-61 percent ridges. * 20-Foot Winds....... * Lower Elevation......South 5-15 mph. * Ridge Top............South 5-15 mph. * Mixing Height.......5 kft agl until 1900. Below 500 ft to 1 kft agl after 2000. * Transport Winds.....Southwest 10 mph until 2300, then south 10 mph. * Chance Lightning....0 percent. * CWR (> 0.10 Inch)...0 percent. .MONDAY... * Sky/Weather.........Partly cloudy. Snow level 7500 feet. * Max Temperature.....60-65 valleys and 45-55 ridges. * Min Humidity........24-34 percent valleys and 30-40 percent ridges. * 20-Foot Winds....... * Lower Elevation......South 10-20 mph increasing to southwest 20-30 mph in the afternoon. * Ridge Top............Southwest 15-25 mph. * Mixing Height.......1-2 kft agl until 1100, then 3 kft agl until 1200, then 4 kft agl until 1300, then 5 kft agl until 1400, then 7 kft agl until 1700, then 6 kft agl. * Transport Winds.....South 15 mph until 1200, then southwest 25 mph. * Chance Lightning....Near 0 percent. * CWR (> 0.10 Inch)...0 percent. .MONDAY NIGHT... * Sky/Weather.........Mostly cloudy. Snow and rain likely. Snow level 7500 feet. * Min Temperature.....25-35. * Max Humidity........76-86 percent valleys and 70-80 percent ridges. * 20-Foot Winds....... * Lower Elevation......Southwest 20-30 mph decreasing to 5-15 mph after midnight. * Ridge Top............Southwest 15-25 mph decreasing to 5-15 mph after midnight. * Mixing Height.......5 kft agl until 1900. Below 500 ft to 1 kft agl after 2000. * Transport Winds.....Southwest 20 mph. * Chance Lightning....20 percent in the Deerlodge/West Beaverhead...and near 0 percent in the East Beaverhead. * CWR (> 0.10 Inch)...30 percent in the Deerlodge/West Beaverhead...and 10 percent in the East Beaverhead. .TUESDAY... * Sky/Weather.........Mostly cloudy. Snow likely and chance of rain. Snow level 5500 feet. * Max Temperature.....45-55 valleys and 35-45 ridges. * Min Humidity........33-43 percent. * 20-Foot Winds....... * Lower Elevation......Southwest 5-15 mph increasing to west 15-25 mph in the afternoon. * Ridge Top............West 15-25 mph. * Mixing Height.......1-2 kft agl until 0800. 9 kft agl after 1400. * Transport Winds.....West 15 mph until 1000. 30 mph after 1600. * Chance Lightning....Near 0 percent in the Deerlodge/West Beaverhead...and 15 percent in the East Beaverhead. * CWR (> 0.10 Inch)...10 percent. .WEDNESDAY...Partly cloudy with slight chance of snow. Chance of snow 20 percent. Lows 25-35. Highs 45-55. Min humidities 20-30 percent. West winds 20-30 mph. .THURSDAY...Partly cloudy. Highs 55-65. Min humidities 10-20 percent. Southwest winds 15-25 mph. .FRIDAY...Partly cloudy. Lows 35-45. Highs 60-70. South winds 15-25 mph. .SATURDAY...Mostly cloudy with slight chance of rain and snow. Chance of precipitation 20 percent. Lows 35-45. Highs 55-65. .SUNDAY...Partly cloudy with chance of snow and rain. Chance of precipitation 30 percent. Lows 30-40. Highs 50-60. $$