National Weather Service Forecast for: Hamilton MT
Issued by: National Weather Service Missoula, MT
Updated: 7:33 pm MST Dec 16, 2025
 
Tonight

Tonight: Rain. Steady temperature around 41. South wind 8 to 17 mph, with gusts as high as 33 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Rain

 Wednesday

Wednesday: Rain. Temperature falling to around 33 by 5pm. South wind 14 to 17 mph becoming west in the afternoon. Winds could gust as high as 50 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Rain

 Wednesday
Night
Wednesday Night: Rain. Low around 26. Breezy, with a west southwest wind 17 to 22 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 32 mph. Chance of precipitation is 80%.
Rain and
Breezy
 Thursday

Thursday: Rain. High near 42. South wind 6 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Rain

 Thursday
Night
Thursday Night: Rain. Low around 34. South southwest wind 14 to 16 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Rain

 Friday

Friday: Rain and snow. High near 43. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.
Rain/Snow

 Friday
Night
Friday Night: Snow likely, mainly before 11pm. Mostly cloudy, with a low around 26. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Snow Likely
then Chance
Snow
 Saturday

Saturday: A slight chance of snow. Partly sunny, with a high near 37.
Slight Chance
Snow
 Saturday
Night
Saturday Night: Mostly cloudy, with a low around 22.
Mostly Cloudy
Lo 41 °F Hi 47 °F⇓ Lo 26 °F Hi 42 °F Lo 34 °F Hi 43 °F Lo 26 °F Hi 37 °F Lo 22 °F

High Wind Warning
 

Tonight
 
 Rain. Steady temperature around 41. South wind 8 to 17 mph, with gusts as high as 33 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday
 
 Rain. Temperature falling to around 33 by 5pm. South wind 14 to 17 mph becoming west in the afternoon. Winds could gust as high as 50 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday Night
 
 Rain. Low around 26. Breezy, with a west southwest wind 17 to 22 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 32 mph. Chance of precipitation is 80%.
Thursday
 
 Rain. High near 42. South wind 6 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
 
 Rain. Low around 34. South southwest wind 14 to 16 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Friday
 
 Rain and snow. High near 43. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.
Friday Night
 
 Snow likely, mainly before 11pm. Mostly cloudy, with a low around 26. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Saturday
 
 A slight chance of snow. Partly sunny, with a high near 37.
Saturday Night
 
 Mostly cloudy, with a low around 22.
Sunday
 
 Partly sunny, with a high near 40.
Sunday Night
 
 Rain likely. Mostly cloudy, with a low around 30.
Monday
 
 Rain likely. Mostly cloudy, with a high near 43.
Monday Night
 
 A slight chance of rain. Mostly cloudy, with a low around 29.
Tuesday
 
 A chance of rain. Partly sunny, with a high near 43.

 

Forecast from NOAA-NWS for Hamilton MT.