National Weather Service Forecast for: Shelby MT
Issued by: National Weather Service Great Falls, MT
Updated: 4:21 pm MDT Sep 12, 2026
 
Tonight

Tonight: Partly cloudy, with a low around 40. East wind 5 to 7 mph.
Partly Cloudy

 Sunday

Sunday: A 20 percent chance of showers after 5pm. Partly sunny, with a high near 61. East wind 8 to 17 mph becoming west northwest in the afternoon. Winds could gust as high as 26 mph.
Partly Sunny
then Slight
Chance
Showers
 Sunday
Night
Sunday Night: A 30 percent chance of showers, mainly before 8pm. Mostly cloudy, with a low around 44. West southwest wind 9 to 13 mph, with gusts as high as 25 mph.
Chance
Showers then
Mostly Cloudy
 Monday

Monday: A 20 percent chance of showers before noon. Partly sunny, with a high near 58. Breezy, with a west northwest wind 16 to 21 mph increasing to 23 to 28 mph in the afternoon. Winds could gust as high as 38 mph.
Slight Chance
Showers then
Partly Sunny
and Breezy
 Monday
Night
Monday Night: Mostly cloudy, with a low around 42. West northwest wind 12 to 17 mph becoming light northwest after midnight. Winds could gust as high as 26 mph.
Mostly Cloudy

 Tuesday

Tuesday: A 20 percent chance of showers before noon. Mostly cloudy, with a high near 57. Calm wind becoming east around 6 mph in the afternoon.
Slight Chance
Showers then
Mostly Cloudy
 Tuesday
Night
Tuesday Night: A 30 percent chance of showers, mainly after midnight. Mostly cloudy, with a low around 42. East northeast wind around 6 mph becoming north northwest after midnight.
Chance
Showers

 Wednesday

Wednesday: Mostly sunny, with a high near 60. North northwest wind around 6 mph becoming south in the afternoon.
Mostly Sunny

 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 41.
Mostly Clear
Lo 40 °F Hi 61 °F Lo 44 °F Hi 58 °F Lo 42 °F Hi 57 °F Lo 42 °F Hi 60 °F Lo 41 °F

 

Tonight
 
 Partly cloudy, with a low around 40. East wind 5 to 7 mph.
Sunday
 
 A 20 percent chance of showers after 5pm. Partly sunny, with a high near 61. East wind 8 to 17 mph becoming west northwest in the afternoon. Winds could gust as high as 26 mph.
Sunday Night
 
 A 30 percent chance of showers, mainly before 8pm. Mostly cloudy, with a low around 44. West southwest wind 9 to 13 mph, with gusts as high as 25 mph.
Monday
 
 A 20 percent chance of showers before noon. Partly sunny, with a high near 58. Breezy, with a west northwest wind 16 to 21 mph increasing to 23 to 28 mph in the afternoon. Winds could gust as high as 38 mph.
Monday Night
 
 Mostly cloudy, with a low around 42. West northwest wind 12 to 17 mph becoming light northwest after midnight. Winds could gust as high as 26 mph.
Tuesday
 
 A 20 percent chance of showers before noon. Mostly cloudy, with a high near 57. Calm wind becoming east around 6 mph in the afternoon.
Tuesday Night
 
 A 30 percent chance of showers, mainly after midnight. Mostly cloudy, with a low around 42. East northeast wind around 6 mph becoming north northwest after midnight.
Wednesday
 
 Mostly sunny, with a high near 60. North northwest wind around 6 mph becoming south in the afternoon.
Wednesday Night
 
 Mostly clear, with a low around 41.
Thursday
 
 Sunny, with a high near 68.
Thursday Night
 
 Mostly clear, with a low around 43.
Friday
 
 Sunny, with a high near 68.
Friday Night
 
 Mostly clear, with a low around 44.
Saturday
 
 Mostly sunny, with a high near 72.

 

Forecast from NOAA-NWS for Shelby MT.