National Weather Service Forecast for: Shelby MT
Issued by: National Weather Service Great Falls, MT
Updated: 1:52 am MDT Jun 30, 2026
 
Overnight

Overnight: A 40 percent chance of showers, mainly before 4am. Mostly cloudy, with a low around 52. West northwest wind 13 to 16 mph, with gusts as high as 26 mph.
Chance
Showers

 Tuesday

Tuesday: A 30 percent chance of showers and thunderstorms, mainly before 2pm. Mostly sunny, with a high near 72. West wind 11 to 14 mph, with gusts as high as 23 mph.
Sunny then
Chance
T-storms
 Tuesday
Night
Tuesday Night: Partly cloudy, with a low around 49. West wind 6 to 13 mph, with gusts as high as 21 mph.
Partly Cloudy

 Wednesday

Wednesday: Mostly sunny, with a high near 74. West wind 7 to 9 mph.
Mostly Sunny

 Wednesday
Night
Wednesday Night: A 20 percent chance of showers before midnight. Partly cloudy, with a low around 48. West southwest wind 5 to 9 mph.
Slight Chance
Showers then
Partly Cloudy
 Thursday

Thursday: Sunny, with a high near 75. West southwest wind 3 to 8 mph.
Sunny

 Thursday
Night
Thursday Night: Partly cloudy, with a low around 49. West southwest wind 5 to 8 mph.
Partly Cloudy

 Friday

Friday: A slight chance of showers after noon. Mostly sunny, with a high near 76. Light west wind increasing to 5 to 9 mph in the afternoon. Winds could gust as high as 20 mph.
Mostly Sunny
then Slight
Chance
Showers
 Friday
Night
Friday Night: Mostly clear, with a low around 50.
Mostly Clear
Lo 52 °F Hi 72 °F Lo 49 °F Hi 74 °F Lo 48 °F Hi 75 °F Lo 49 °F Hi 76 °F Lo 50 °F

 

Overnight
 
 A 40 percent chance of showers, mainly before 4am. Mostly cloudy, with a low around 52. West northwest wind 13 to 16 mph, with gusts as high as 26 mph.
Tuesday
 
 A 30 percent chance of showers and thunderstorms, mainly before 2pm. Mostly sunny, with a high near 72. West wind 11 to 14 mph, with gusts as high as 23 mph.
Tuesday Night
 
 Partly cloudy, with a low around 49. West wind 6 to 13 mph, with gusts as high as 21 mph.
Wednesday
 
 Mostly sunny, with a high near 74. West wind 7 to 9 mph.
Wednesday Night
 
 A 20 percent chance of showers before midnight. Partly cloudy, with a low around 48. West southwest wind 5 to 9 mph.
Thursday
 
 Sunny, with a high near 75. West southwest wind 3 to 8 mph.
Thursday Night
 
 Partly cloudy, with a low around 49. West southwest wind 5 to 8 mph.
Friday
 
 A slight chance of showers after noon. Mostly sunny, with a high near 76. Light west wind increasing to 5 to 9 mph in the afternoon. Winds could gust as high as 20 mph.
Friday Night
 
 Mostly clear, with a low around 50.
Independence Day
 
 Sunny, with a high near 80.
Saturday Night
 
 Mostly clear, with a low around 51.
Sunday
 
 Sunny, with a high near 85.
Sunday Night
 
 Partly cloudy, with a low around 54.
Monday
 
 Mostly sunny, with a high near 84.

 

Forecast from NOAA-NWS for Shelby MT.