National Weather Service Forecast for: Belgrade MT
Issued by: National Weather Service Great Falls, MT
Updated: 12:31 am MDT Aug 20, 2026
 
Overnight

Overnight: Mostly clear, with a low around 50. South southeast wind around 6 mph.
Mostly Clear

 Thursday

Thursday: Sunny, with a high near 90. Calm wind becoming north northwest around 6 mph in the afternoon.
Sunny

 Thursday
Night
Thursday Night: Partly cloudy, with a low around 54. North wind around 6 mph becoming south in the evening.
Partly Cloudy

 Friday

Friday: Mostly sunny, with a high near 91. South wind around 5 mph becoming calm in the morning.
Mostly Sunny

 Friday
Night
Friday Night: Mostly cloudy, with a low around 56. Light east wind increasing to 6 to 11 mph in the evening. Winds could gust as high as 18 mph.
Mostly Cloudy

 Saturday

Saturday: A 30 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 88. Calm wind becoming southwest around 6 mph in the afternoon.
Partly Sunny
then Chance
T-storms
 Saturday
Night
Saturday Night: A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, with a low around 53. West wind 5 to 8 mph becoming light and variable after midnight. Chance of precipitation is 40%.
Chance
Showers then
Mostly Cloudy
 Sunday

Sunday: A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 85. Light and variable wind becoming west 12 to 17 mph in the afternoon. Winds could gust as high as 28 mph.
Mostly Sunny
then Chance
Showers
 Sunday
Night
Sunday Night: A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 50.
Slight Chance
T-storms then
Mostly Clear
Lo 50 °F Hi 90 °F Lo 54 °F Hi 91 °F Lo 56 °F Hi 88 °F Lo 53 °F Hi 85 °F Lo 50 °F

 

Overnight
 
 Mostly clear, with a low around 50. South southeast wind around 6 mph.
Thursday
 
 Sunny, with a high near 90. Calm wind becoming north northwest around 6 mph in the afternoon.
Thursday Night
 
 Partly cloudy, with a low around 54. North wind around 6 mph becoming south in the evening.
Friday
 
 Mostly sunny, with a high near 91. South wind around 5 mph becoming calm in the morning.
Friday Night
 
 Mostly cloudy, with a low around 56. Light east wind increasing to 6 to 11 mph in the evening. Winds could gust as high as 18 mph.
Saturday
 
 A 30 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 88. Calm wind becoming southwest around 6 mph in the afternoon.
Saturday Night
 
 A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, with a low around 53. West wind 5 to 8 mph becoming light and variable after midnight. Chance of precipitation is 40%.
Sunday
 
 A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 85. Light and variable wind becoming west 12 to 17 mph in the afternoon. Winds could gust as high as 28 mph.
Sunday Night
 
 A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 50.
Monday
 
 Sunny, with a high near 83.
Monday Night
 
 Mostly cloudy, with a low around 50.
Tuesday
 
 Mostly sunny, with a high near 84.
Tuesday Night
 
 A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 50.
Wednesday
 
 Mostly sunny, with a high near 84.

 

Forecast from NOAA-NWS for Belgrade MT.