National Weather Service Forecast for: Great Falls MT
Issued by: National Weather Service Great Falls, MT
Updated: 9:17 pm MST Dec 4, 2025
 
Overnight

Overnight: A 10 percent chance of snow after 5am. Mostly cloudy, with a low around 23. West southwest wind 3 to 6 mph.
Slight Chance
Snow
 Friday

Friday: A slight chance of snow between 3pm and 4pm, then a chance of rain and snow. Cloudy, then gradually becoming mostly sunny, with a high near 38. Light and variable wind becoming south southeast 5 to 7 mph in the morning. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.
Mostly Cloudy
then Chance
Rain/Snow
 Friday
Night
Friday Night: Rain and snow, becoming all snow after 3am. Low around 21. Southeast wind around 9 mph becoming west after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Rain/Snow

 Saturday

Saturday: A 50 percent chance of snow before 11am. Mostly cloudy, with a high near 33. West northwest wind 3 to 6 mph. New snow accumulation of less than a half inch possible.
Chance Snow
then Mostly
Cloudy
 Saturday
Night
Saturday Night: Mostly cloudy, with a low around 22. Southwest wind 6 to 14 mph, with gusts as high as 23 mph.
Mostly Cloudy

 Sunday

Sunday: Partly sunny, with a high near 42. Southwest wind 13 to 17 mph, with gusts as high as 30 mph.
Partly Sunny

 Sunday
Night
Sunday Night: Mostly cloudy, with a low around 32. Breezy, with a southwest wind 16 to 22 mph, with gusts as high as 34 mph.
Mostly Cloudy
and Breezy
 Monday

Monday: Mostly sunny, with a high near 44. Southwest wind 16 to 18 mph, with gusts as high as 30 mph.
Mostly Sunny

 Monday
Night
Monday Night: A slight chance of rain after 11pm. Mostly cloudy, with a low around 35. Breezy.
Slight Chance
Rain and
Breezy
Lo 23 °F Hi 38 °F Lo 21 °F Hi 33 °F Lo 22 °F Hi 42 °F Lo 32 °F Hi 44 °F Lo 35 °F

 

Overnight
 
 A 10 percent chance of snow after 5am. Mostly cloudy, with a low around 23. West southwest wind 3 to 6 mph.
Friday
 
 A slight chance of snow between 3pm and 4pm, then a chance of rain and snow. Cloudy, then gradually becoming mostly sunny, with a high near 38. Light and variable wind becoming south southeast 5 to 7 mph in the morning. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.
Friday Night
 
 Rain and snow, becoming all snow after 3am. Low around 21. Southeast wind around 9 mph becoming west after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Saturday
 
 A 50 percent chance of snow before 11am. Mostly cloudy, with a high near 33. West northwest wind 3 to 6 mph. New snow accumulation of less than a half inch possible.
Saturday Night
 
 Mostly cloudy, with a low around 22. Southwest wind 6 to 14 mph, with gusts as high as 23 mph.
Sunday
 
 Partly sunny, with a high near 42. Southwest wind 13 to 17 mph, with gusts as high as 30 mph.
Sunday Night
 
 Mostly cloudy, with a low around 32. Breezy, with a southwest wind 16 to 22 mph, with gusts as high as 34 mph.
Monday
 
 Mostly sunny, with a high near 44. Southwest wind 16 to 18 mph, with gusts as high as 30 mph.
Monday Night
 
 A slight chance of rain after 11pm. Mostly cloudy, with a low around 35. Breezy.
Tuesday
 
 A chance of rain. Mostly cloudy, with a high near 50. Breezy.
Tuesday Night
 
 A chance of rain and snow. Mostly cloudy, with a low around 30.
Wednesday
 
 A chance of rain and snow. Partly sunny, with a high near 46.
Wednesday Night
 
 A chance of rain and snow. Mostly cloudy, with a low around 31.
Thursday
 
 A chance of rain and snow. Mostly cloudy, with a high near 47.

 

Forecast from NOAA-NWS for Great Falls MT.