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

Overnight: A 20 percent chance of snow. Mostly cloudy, with a low around 26. West wind around 6 mph.
Slight Chance
Snow

 Friday

Friday: A chance of snow between 1pm and 3pm, then rain and snow likely. Increasing clouds, with a high near 38. Light and variable wind becoming south around 6 mph in the morning. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Partly Sunny
then
Rain/Snow
Likely
 Friday
Night
Friday Night: Snow, possibly mixed with rain. Low around 31. South wind 7 to 16 mph becoming west in the evening. Winds could gust as high as 34 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Rain/Snow

 Saturday

Saturday: Snow likely, mainly before 11am. Partly sunny, with a high near 40. West wind 10 to 14 mph, with gusts as high as 29 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Snow Likely

 Saturday
Night
Saturday Night: A 20 percent chance of snow before 11pm. Mostly cloudy, with a low around 29. West southwest wind 10 to 13 mph, with gusts as high as 28 mph.
Slight Chance
Snow then
Mostly Cloudy
 Sunday

Sunday: Partly sunny, with a high near 40. Southwest wind 9 to 11 mph, with gusts as high as 24 mph.
Partly Sunny

 Sunday
Night
Sunday Night: A slight chance of rain and snow before 11pm. Mostly cloudy, with a low around 30. West southwest wind 13 to 15 mph, with gusts as high as 31 mph. Chance of precipitation is 20%.
Slight Chance
Rain/Snow
then Mostly
Cloudy
 Monday

Monday: Partly sunny, with a high near 41. Southwest wind around 11 mph, with gusts as high as 25 mph.
Partly Sunny

 Monday
Night
Monday Night: A chance of rain and snow after 11pm. Mostly cloudy, with a low around 34.
Chance
Rain/Snow
Lo 26 °F Hi 38 °F Lo 31 °F Hi 40 °F Lo 29 °F Hi 40 °F Lo 30 °F Hi 41 °F Lo 34 °F

 

Overnight
 
 A 20 percent chance of snow. Mostly cloudy, with a low around 26. West wind around 6 mph.
Friday
 
 A chance of snow between 1pm and 3pm, then rain and snow likely. Increasing clouds, with a high near 38. Light and variable wind becoming south around 6 mph in the morning. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Friday Night
 
 Snow, possibly mixed with rain. Low around 31. South wind 7 to 16 mph becoming west in the evening. Winds could gust as high as 34 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Saturday
 
 Snow likely, mainly before 11am. Partly sunny, with a high near 40. West wind 10 to 14 mph, with gusts as high as 29 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Saturday Night
 
 A 20 percent chance of snow before 11pm. Mostly cloudy, with a low around 29. West southwest wind 10 to 13 mph, with gusts as high as 28 mph.
Sunday
 
 Partly sunny, with a high near 40. Southwest wind 9 to 11 mph, with gusts as high as 24 mph.
Sunday Night
 
 A slight chance of rain and snow before 11pm. Mostly cloudy, with a low around 30. West southwest wind 13 to 15 mph, with gusts as high as 31 mph. Chance of precipitation is 20%.
Monday
 
 Partly sunny, with a high near 41. Southwest wind around 11 mph, with gusts as high as 25 mph.
Monday Night
 
 A chance of rain and snow after 11pm. Mostly cloudy, with a low around 34.
Tuesday
 
 Rain likely, possibly mixed with snow, becoming all rain after 8am. Mostly cloudy, with a high near 46.
Tuesday Night
 
 Rain and snow likely. Mostly cloudy, with a low around 32.
Wednesday
 
 Rain and snow likely. Mostly cloudy, with a high near 42.
Wednesday Night
 
 A chance of rain and snow. Mostly cloudy, with a low around 32.
Thursday
 
 A chance of rain and snow. Partly sunny, with a high near 45.

 

Forecast from NOAA-NWS for Helena MT.