National Weather Service Forecast for: Malmstrom Afb MT
Issued by: National Weather Service Great Falls, MT
Updated: 4:32 am MDT May 26, 2026
 
Today

Today: A slight chance of showers between 2pm and 3pm, then a slight chance of thunderstorms after 3pm.  Increasing clouds, with a high near 91. Light and variable wind becoming east southeast 11 to 16 mph in the afternoon. Winds could gust as high as 23 mph.  Chance of precipitation is 20%.
Mostly Sunny
then Slight
Chance
T-storms
Tonight

Tonight: Showers and thunderstorms likely, mainly before 11pm.  Cloudy, then gradually becoming partly cloudy, with a low around 53. South southeast wind 5 to 15 mph becoming west southwest after midnight. Winds could gust as high as 24 mph.  Chance of precipitation is 70%.
Showers
Likely then
Mostly Cloudy
Wednesday

Wednesday: A slight chance of showers between 11am and noon, then a chance of showers and thunderstorms after noon.  Partly sunny, with a high near 84. West southwest wind around 6 mph becoming light and variable.  Chance of precipitation is 30%.
Slight Chance
Showers then
Chance
T-storms
Wednesday
Night
Wednesday Night: A 20 percent chance of showers and thunderstorms before midnight.  Cloudy during the early evening, then gradual clearing, with a low around 54. East southeast wind around 6 mph becoming light and variable  in the evening.
Slight Chance
T-storms then
Mostly Clear
Thursday

Thursday: A slight chance of showers between noon and 3pm, then a slight chance of showers and thunderstorms after 3pm.  Sunny, with a high near 89. Calm wind becoming east northeast 5 to 8 mph in the afternoon.  Chance of precipitation is 20%.
Sunny then
Slight Chance
T-storms
Thursday
Night
Thursday Night: A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight.  Partly cloudy, with a low around 56. East northeast wind 5 to 10 mph becoming light and variable  after midnight.  Chance of precipitation is 20%.
Slight Chance
T-storms then
Partly Cloudy
Friday

Friday: A 30 percent chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 89. Light and variable wind becoming west northwest 5 to 7 mph in the afternoon.
Mostly Sunny
then Chance
T-storms
Friday
Night
Friday Night: A chance of showers and thunderstorms before midnight, then a chance of rain after midnight.  Mostly cloudy, with a low around 53. South wind 6 to 10 mph.
Chance
Showers

Saturday

Saturday: A chance of rain, then showers likely and possibly a thunderstorm after noon.  Mostly cloudy, with a high near 71.
Showers
Likely

Hi 91 °F Lo 53 °F Hi 84 °F Lo 54 °F Hi 89 °F Lo 56 °F Hi 89 °F Lo 53 °F Hi 71 °F

 

Today
 
A slight chance of showers between 2pm and 3pm, then a slight chance of thunderstorms after 3pm. Increasing clouds, with a high near 91. Light and variable wind becoming east southeast 11 to 16 mph in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 20%.
Tonight
 
Showers and thunderstorms likely, mainly before 11pm. Cloudy, then gradually becoming partly cloudy, with a low around 53. South southeast wind 5 to 15 mph becoming west southwest after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 70%.
Wednesday
 
A slight chance of showers between 11am and noon, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 84. West southwest wind around 6 mph becoming light and variable. Chance of precipitation is 30%.
Wednesday Night
 
A 20 percent chance of showers and thunderstorms before midnight. Cloudy during the early evening, then gradual clearing, with a low around 54. East southeast wind around 6 mph becoming light and variable in the evening.
Thursday
 
A slight chance of showers between noon and 3pm, then a slight chance of showers and thunderstorms after 3pm. Sunny, with a high near 89. Calm wind becoming east northeast 5 to 8 mph in the afternoon. Chance of precipitation is 20%.
Thursday Night
 
A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Partly cloudy, with a low around 56. East northeast wind 5 to 10 mph becoming light and variable after midnight. Chance of precipitation is 20%.
Friday
 
A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 89. Light and variable wind becoming west northwest 5 to 7 mph in the afternoon.
Friday Night
 
A chance of showers and thunderstorms before midnight, then a chance of rain after midnight. Mostly cloudy, with a low around 53. South wind 6 to 10 mph.
Saturday
 
A chance of rain, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 71.
Saturday Night
 
Showers likely and possibly a thunderstorm before midnight, then a chance of rain after midnight. Mostly cloudy, with a low around 47.
Sunday
 
A chance of rain and thunderstorms. Partly sunny, with a high near 71.
Sunday Night
 
A chance of rain and thunderstorms. Mostly cloudy, with a low around 45.
Monday
 
A chance of rain. Mostly sunny, with a high near 69.

 

Forecast from NOAA-NWS for Malmstrom Afb MT.