National Weather Service Forecast for: Great Falls MT
Issued by: National Weather Service Great Falls, MT
Updated: 12:32 pm MDT May 4, 2026
 
This
Afternoon
This Afternoon: A 40 percent chance of showers.  Mostly cloudy, with a high near 55. North northwest wind 11 to 15 mph, with gusts as high as 22 mph.
Chance
Showers

Tonight

Tonight: A slight chance of snow showers between 4am and 5am.  Mostly cloudy, with a low around 34. North wind 9 to 14 mph becoming light  after midnight. Winds could gust as high as 21 mph.  Chance of precipitation is 20%.
Mostly Cloudy
then Slight
Chance Snow
Showers
Tuesday

Tuesday: A slight chance of snow showers before noon, then a chance of rain and snow showers.  Partly sunny, with a high near 53. Light north wind increasing to 11 to 16 mph in the morning. Winds could gust as high as 25 mph.  Chance of precipitation is 40%. Little or no snow accumulation expected.
Slight Chance
Snow Showers
then Chance
Rain/Snow
Tuesday
Night
Tuesday Night: Partly cloudy, with a low around 27. North wind 6 to 11 mph becoming light and variable  after midnight. Winds could gust as high as 21 mph.
Partly Cloudy

Wednesday

Wednesday: Sunny, with a high near 71. Light south southwest wind becoming west southwest 5 to 10 mph in the morning. Winds could gust as high as 18 mph.
Sunny

Wednesday
Night
Wednesday Night: A 20 percent chance of showers after midnight.  Mostly cloudy, with a low around 48. Southwest wind around 10 mph, with gusts as high as 18 mph.
Partly Cloudy
then Slight
Chance
Showers
Thursday

Thursday: A chance of showers, then showers likely and possibly a thunderstorm after noon.  Mostly cloudy, with a high near 69. West northwest wind 8 to 14 mph, with gusts as high as 22 mph.  Chance of precipitation is 60%.
Showers
Likely

Thursday
Night
Thursday Night: A slight chance of rain before midnight.  Mostly cloudy, with a low around 45. Southwest wind 5 to 11 mph, with gusts as high as 18 mph.
Slight Chance
Rain then
Mostly Cloudy
Friday

Friday: A slight chance of rain after noon.  Partly sunny, with a high near 72.
Mostly Cloudy
then Slight
Chance Rain
Hi 55 °F Lo 34 °F Hi 53 °F Lo 27 °F Hi 71 °F Lo 48 °F Hi 69 °F Lo 45 °F Hi 72 °F

 

This Afternoon
 
A 40 percent chance of showers. Mostly cloudy, with a high near 55. North northwest wind 11 to 15 mph, with gusts as high as 22 mph.
Tonight
 
A slight chance of snow showers between 4am and 5am. Mostly cloudy, with a low around 34. North wind 9 to 14 mph becoming light after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 20%.
Tuesday
 
A slight chance of snow showers before noon, then a chance of rain and snow showers. Partly sunny, with a high near 53. Light north wind increasing to 11 to 16 mph in the morning. Winds could gust as high as 25 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.
Tuesday Night
 
Partly cloudy, with a low around 27. North wind 6 to 11 mph becoming light and variable after midnight. Winds could gust as high as 21 mph.
Wednesday
 
Sunny, with a high near 71. Light south southwest wind becoming west southwest 5 to 10 mph in the morning. Winds could gust as high as 18 mph.
Wednesday Night
 
A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 48. Southwest wind around 10 mph, with gusts as high as 18 mph.
Thursday
 
A chance of showers, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 69. West northwest wind 8 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.
Thursday Night
 
A slight chance of rain before midnight. Mostly cloudy, with a low around 45. Southwest wind 5 to 11 mph, with gusts as high as 18 mph.
Friday
 
A slight chance of rain after noon. Partly sunny, with a high near 72.
Friday Night
 
A chance of rain, mainly before midnight. Mostly cloudy, with a low around 46.
Saturday
 
A chance of rain. Mostly cloudy, with a high near 65.
Saturday Night
 
A chance of rain. Mostly cloudy, with a low around 41.
Sunday
 
Mostly sunny, with a high near 72.

 

Forecast from NOAA-NWS for Great Falls MT.