National Weather Service Forecast for: Great Falls MT
Issued by: National Weather Service Great Falls, MT
Updated: 11:17 am MDT Mar 19, 2026
 
Today

Today: Partly sunny, with a high near 70. Breezy, with a west southwest wind 25 to 29 mph, with gusts as high as 46 mph.
Partly Sunny
and Breezy

 Tonight

Tonight: Mostly cloudy, with a low around 52. Breezy, with a southwest wind 16 to 23 mph, with gusts as high as 37 mph.
Partly Cloudy
and Breezy
then Mostly
Cloudy
 Friday

Friday: Partly sunny, with a high near 74. Windy, with a southwest wind 16 to 21 mph increasing to 27 to 32 mph in the afternoon. Winds could gust as high as 49 mph.
Partly Sunny
and Windy

 Friday
Night
Friday Night: Partly cloudy, with a low around 52. Breezy, with a southwest wind 21 to 26 mph decreasing to 11 to 16 mph after midnight. Winds could gust as high as 43 mph.
Partly Cloudy
and Breezy
then Partly
Cloudy
 Saturday

Saturday: A 30 percent chance of rain, mainly after noon. Partly sunny, with a high near 61. West southwest wind 16 to 20 mph, with gusts as high as 36 mph.
Chance Rain

 Saturday
Night
Saturday Night: Mostly clear, with a low around 28. Northwest wind 5 to 15 mph, with gusts as high as 25 mph.
Mostly Clear

 Sunday

Sunday: Sunny, with a high near 56. South southwest wind 5 to 14 mph, with gusts as high as 23 mph.
Sunny

 Sunday
Night
Sunday Night: Mostly cloudy, with a low around 32. South southwest wind 6 to 13 mph, with gusts as high as 21 mph.
Mostly Cloudy

 Monday

Monday: Mostly cloudy, with a high near 58.
Mostly Cloudy
Hi 70 °F Lo 52 °F Hi 74 °F Lo 52 °F Hi 61 °F Lo 28 °F Hi 56 °F Lo 32 °F Hi 58 °F

High Wind Watch
 

Today
 
 Partly sunny, with a high near 70. Breezy, with a west southwest wind 25 to 29 mph, with gusts as high as 46 mph.
Tonight
 
 Mostly cloudy, with a low around 52. Breezy, with a southwest wind 16 to 23 mph, with gusts as high as 37 mph.
Friday
 
 Partly sunny, with a high near 74. Windy, with a southwest wind 16 to 21 mph increasing to 27 to 32 mph in the afternoon. Winds could gust as high as 49 mph.
Friday Night
 
 Partly cloudy, with a low around 52. Breezy, with a southwest wind 21 to 26 mph decreasing to 11 to 16 mph after midnight. Winds could gust as high as 43 mph.
Saturday
 
 A 30 percent chance of rain, mainly after noon. Partly sunny, with a high near 61. West southwest wind 16 to 20 mph, with gusts as high as 36 mph.
Saturday Night
 
 Mostly clear, with a low around 28. Northwest wind 5 to 15 mph, with gusts as high as 25 mph.
Sunday
 
 Sunny, with a high near 56. South southwest wind 5 to 14 mph, with gusts as high as 23 mph.
Sunday Night
 
 Mostly cloudy, with a low around 32. South southwest wind 6 to 13 mph, with gusts as high as 21 mph.
Monday
 
 Mostly cloudy, with a high near 58.
Monday Night
 
 Mostly cloudy, with a low around 37.
Tuesday
 
 Mostly cloudy, with a high near 67.
Tuesday Night
 
 A slight chance of rain. Mostly cloudy, with a low around 44.
Wednesday
 
 A slight chance of rain. Partly sunny, with a high near 62. Breezy.

 

Forecast from NOAA-NWS for Great Falls MT.