National Weather Service Forecast for: Bigfork MT
Issued by: National Weather Service Missoula, MT
Updated: 2:01 pm MDT Sep 12, 2026
 
Tonight

Tonight: Partly cloudy, with a low around 48. Calm wind becoming northeast 5 to 9 mph in the evening.
Partly Cloudy

 Sunday

Sunday: Rain and possibly a thunderstorm before 4pm, then showers likely and possibly a thunderstorm between 4pm and 5pm, then a chance of showers and thunderstorms after 5pm. High near 59. East northeast wind 5 to 8 mph becoming light and variable in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Rain Likely
then Showers
 Sunday
Night
Sunday Night: Rain, mainly after 2am. Low around 46. Light west southwest wind becoming south southwest 6 to 11 mph after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Rain Likely
then Rain
 Monday

Monday: Rain, mainly before noon. High near 56. Southwest wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Rain then
Chance Rain
 Monday
Night
Monday Night: A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 47. Light and variable wind.
Slight Chance
Rain then
Mostly Cloudy
 Tuesday

Tuesday: Mostly cloudy, with a high near 60.
Mostly Cloudy

 Tuesday
Night
Tuesday Night: Mostly cloudy, with a low around 46.
Mostly Cloudy

 Wednesday

Wednesday: Sunny, with a high near 63.
Sunny

 Wednesday
Night
Wednesday Night: Clear, with a low around 46.
Clear
Lo 48 °F Hi 59 °F Lo 46 °F Hi 56 °F Lo 47 °F Hi 60 °F Lo 46 °F Hi 63 °F Lo 46 °F

 

Tonight
 
 Partly cloudy, with a low around 48. Calm wind becoming northeast 5 to 9 mph in the evening.
Sunday
 
 Rain and possibly a thunderstorm before 4pm, then showers likely and possibly a thunderstorm between 4pm and 5pm, then a chance of showers and thunderstorms after 5pm. High near 59. East northeast wind 5 to 8 mph becoming light and variable in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
 
 Rain, mainly after 2am. Low around 46. Light west southwest wind becoming south southwest 6 to 11 mph after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
 
 Rain, mainly before noon. High near 56. Southwest wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
 
 A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 47. Light and variable wind.
Tuesday
 
 Mostly cloudy, with a high near 60.
Tuesday Night
 
 Mostly cloudy, with a low around 46.
Wednesday
 
 Sunny, with a high near 63.
Wednesday Night
 
 Clear, with a low around 46.
Thursday
 
 Sunny, with a high near 67.
Thursday Night
 
 Clear, with a low around 47.
Friday
 
 Sunny, with a high near 69.
Friday Night
 
 Mostly clear, with a low around 50.
Saturday
 
 Mostly sunny, with a high near 71.

 

Forecast from NOAA-NWS for Bigfork MT.