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

Tonight: Mostly clear, with a low around 44. North wind 5 to 8 mph.
Mostly Clear

 Sunday

Sunday: Rain and possibly a thunderstorm before 2pm, then showers likely and possibly a thunderstorm between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. High near 61. Calm wind becoming west 5 to 8 mph in the afternoon. Chance of precipitation is 80%.
Showers

 Sunday
Night
Sunday Night: Rain. Low around 42. West wind 6 to 11 mph becoming south in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Rain Likely
then Rain
 Monday

Monday: Rain likely, mainly before noon. Mostly cloudy, with a high near 59. South southwest wind 7 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Rain Likely
then Chance
Rain
 Monday
Night
Monday Night: Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 41. South southwest wind 5 to 7 mph becoming calm in the evening.
Partly Cloudy
then Patchy
Fog
 Tuesday

Tuesday: Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 62.
Patchy Fog
then Mostly
Cloudy
 Tuesday
Night
Tuesday Night: Mostly cloudy, with a low around 43.
Mostly Cloudy

 Wednesday

Wednesday: Sunny, with a high near 65.
Sunny

 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 43.
Mostly Clear
Lo 44 °F Hi 61 °F Lo 42 °F Hi 59 °F Lo 41 °F Hi 62 °F Lo 43 °F Hi 65 °F Lo 43 °F

 

Tonight
 
 Mostly clear, with a low around 44. North wind 5 to 8 mph.
Sunday
 
 Rain and possibly a thunderstorm before 2pm, then showers likely and possibly a thunderstorm between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. High near 61. Calm wind becoming west 5 to 8 mph in the afternoon. Chance of precipitation is 80%.
Sunday Night
 
 Rain. Low around 42. West wind 6 to 11 mph becoming south in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Monday
 
 Rain likely, mainly before noon. Mostly cloudy, with a high near 59. South southwest wind 7 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Monday Night
 
 Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 41. South southwest wind 5 to 7 mph becoming calm in the evening.
Tuesday
 
 Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 62.
Tuesday Night
 
 Mostly cloudy, with a low around 43.
Wednesday
 
 Sunny, with a high near 65.
Wednesday Night
 
 Mostly clear, with a low around 43.
Thursday
 
 Sunny, with a high near 69.
Thursday Night
 
 Mostly clear, with a low around 45.
Friday
 
 Sunny, with a high near 72.
Friday Night
 
 Mostly clear, with a low around 46.
Saturday
 
 Sunny, with a high near 74.

 

Forecast from NOAA-NWS for Polson MT.