National Weather Service Forecast for: Great Falls MT
Issued by: National Weather Service Great Falls, MT
Updated: 12:31 pm MDT Oct 6, 2026
 
This
Afternoon
This Afternoon: Sunny, with a high near 82. West wind 10 to 13 mph, with gusts as high as 24 mph.
Sunny

 Tonight

Tonight: Partly cloudy, with a low around 44. West wind 5 to 7 mph becoming calm in the evening.
Partly Cloudy

 Wednesday

Wednesday: Mostly sunny, with a high near 72. Calm wind becoming east northeast around 6 mph in the afternoon.
Mostly Sunny

 Wednesday
Night
Wednesday Night: Partly cloudy, with a low around 43. East northeast wind around 5 mph becoming calm in the evening.
Partly Cloudy

 Thursday

Thursday: Sunny, with a high near 79. West wind 3 to 6 mph.
Sunny

 Thursday
Night
Thursday Night: Partly cloudy, with a low around 52. Light southwest wind becoming south southwest 5 to 10 mph in the evening. Winds could gust as high as 18 mph.
Partly Cloudy

 Friday

Friday: Mostly sunny, with a high near 82. Breezy, with a south southwest wind 11 to 16 mph increasing to 21 to 26 mph in the afternoon. Winds could gust as high as 40 mph.
Mostly Sunny
then Mostly
Sunny and
Breezy
 Friday
Night
Friday Night: Mostly cloudy, with a low around 43. West southwest wind 8 to 16 mph, with gusts as high as 30 mph.
Mostly Cloudy

 Saturday

Saturday: Rain likely, mainly after noon. Mostly cloudy, with a high near 54.
Rain Likely
Hi 82 °F Lo 44 °F Hi 72 °F Lo 43 °F Hi 79 °F Lo 52 °F Hi 82 °F Lo 43 °F Hi 54 °F

 

This Afternoon
 
 Sunny, with a high near 82. West wind 10 to 13 mph, with gusts as high as 24 mph.
Tonight
 
 Partly cloudy, with a low around 44. West wind 5 to 7 mph becoming calm in the evening.
Wednesday
 
 Mostly sunny, with a high near 72. Calm wind becoming east northeast around 6 mph in the afternoon.
Wednesday Night
 
 Partly cloudy, with a low around 43. East northeast wind around 5 mph becoming calm in the evening.
Thursday
 
 Sunny, with a high near 79. West wind 3 to 6 mph.
Thursday Night
 
 Partly cloudy, with a low around 52. Light southwest wind becoming south southwest 5 to 10 mph in the evening. Winds could gust as high as 18 mph.
Friday
 
 Mostly sunny, with a high near 82. Breezy, with a south southwest wind 11 to 16 mph increasing to 21 to 26 mph in the afternoon. Winds could gust as high as 40 mph.
Friday Night
 
 Mostly cloudy, with a low around 43. West southwest wind 8 to 16 mph, with gusts as high as 30 mph.
Saturday
 
 Rain likely, mainly after noon. Mostly cloudy, with a high near 54.
Saturday Night
 
 Rain and snow, becoming all snow after midnight. Cloudy, with a low around 30.
Sunday
 
 Snow. Cloudy, with a high near 38.
Sunday Night
 
 A chance of snow. Mostly cloudy, with a low around 26.
Columbus Day
 
 A slight chance of snow. Partly sunny, with a high near 42.

 

Forecast from NOAA-NWS for Great Falls MT.