National Weather Service Forecast for: Malmstrom Afb MT
Issued by: National Weather Service Great Falls, MT
Updated: 3:43 am MDT Jun 22, 2026
 
Overnight

Overnight: A 20 percent chance of showers. Mostly cloudy, with a low around 49. North wind around 6 mph.
Slight Chance
Showers

 Monday

Monday: A chance of showers, with thunderstorms also possible after 3pm. Partly sunny, with a high near 65. North wind 5 to 9 mph. Chance of precipitation is 40%.
Chance
Showers

 Monday
Night
Monday Night: A 20 percent chance of showers before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 41. North wind 5 to 9 mph becoming light and variable after midnight.
Slight Chance
Showers then
Mostly Clear
 Tuesday

Tuesday: Sunny, with a high near 70. Calm wind becoming north northeast 5 to 8 mph in the afternoon.
Sunny

 Tuesday
Night
Tuesday Night: Mostly cloudy, with a low around 47. Northeast wind 3 to 8 mph.
Mostly Cloudy

 Wednesday

Wednesday: Mostly sunny, with a high near 77. Calm wind becoming northeast 5 to 9 mph in the afternoon.
Mostly Sunny

 Wednesday
Night
Wednesday Night: Partly cloudy, with a low around 50. East northeast wind 6 to 11 mph becoming light and variable after midnight.
Partly Cloudy

 Thursday

Thursday: A slight chance of showers and thunderstorms after noon. Partly sunny, with a high near 81. Calm wind becoming west southwest around 5 mph in the afternoon.
Partly Sunny
then Slight
Chance
T-storms
 Thursday
Night
Thursday Night: Mostly cloudy, with a low around 54.
Mostly Cloudy
Lo 49 °F Hi 65 °F Lo 41 °F Hi 70 °F Lo 47 °F Hi 77 °F Lo 50 °F Hi 81 °F Lo 54 °F

 

Overnight
 
 A 20 percent chance of showers. Mostly cloudy, with a low around 49. North wind around 6 mph.
Monday
 
 A chance of showers, with thunderstorms also possible after 3pm. Partly sunny, with a high near 65. North wind 5 to 9 mph. Chance of precipitation is 40%.
Monday Night
 
 A 20 percent chance of showers before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 41. North wind 5 to 9 mph becoming light and variable after midnight.
Tuesday
 
 Sunny, with a high near 70. Calm wind becoming north northeast 5 to 8 mph in the afternoon.
Tuesday Night
 
 Mostly cloudy, with a low around 47. Northeast wind 3 to 8 mph.
Wednesday
 
 Mostly sunny, with a high near 77. Calm wind becoming northeast 5 to 9 mph in the afternoon.
Wednesday Night
 
 Partly cloudy, with a low around 50. East northeast wind 6 to 11 mph becoming light and variable after midnight.
Thursday
 
 A slight chance of showers and thunderstorms after noon. Partly sunny, with a high near 81. Calm wind becoming west southwest around 5 mph in the afternoon.
Thursday Night
 
 Mostly cloudy, with a low around 54.
Friday
 
 A chance of showers and thunderstorms after noon. Partly sunny, with a high near 84.
Friday Night
 
 A chance of showers and thunderstorms. Mostly cloudy, with a low around 53.
Saturday
 
 A chance of showers and thunderstorms. Partly sunny, with a high near 71.
Saturday Night
 
 A chance of showers and thunderstorms. Mostly cloudy, with a low around 48.
Sunday
 
 Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 63. Breezy.

 

Forecast from NOAA-NWS for Malmstrom Afb MT.