National Weather Service Forecast for: Helena MT
Issued by: National Weather Service Great Falls, MT
Updated: 12:32 pm MDT May 4, 2026
 
This
Afternoon
This Afternoon: A 20 percent chance of showers. Partly sunny, with a high near 57. North wind around 16 mph, with gusts as high as 25 mph.
Slight Chance
Showers

 Tonight

Tonight: Mostly cloudy, with a low around 35. North wind 9 to 14 mph becoming light north northwest after midnight. Winds could gust as high as 26 mph.
Mostly Cloudy

 Tuesday

Tuesday: A chance of snow showers before 2pm, then a chance of rain and snow showers. Partly sunny, with a high near 51. Light north northwest wind becoming north 16 to 21 mph in the morning. Winds could gust as high as 34 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Chance Snow
Showers then
Chance
Rain/Snow
 Tuesday
Night
Tuesday Night: Mostly clear, with a low around 31. North wind 9 to 14 mph becoming light and variable after midnight. Winds could gust as high as 30 mph.
Mostly Clear

 Wednesday

Wednesday: Sunny, with a high near 68. Light and variable wind becoming west northwest 8 to 13 mph in the afternoon. Winds could gust as high as 24 mph.
Sunny

 Wednesday
Night
Wednesday Night: A 20 percent chance of showers after midnight. Partly cloudy, with a low around 49. West southwest wind 8 to 15 mph, with gusts as high as 29 mph.
Partly Cloudy
then Slight
Chance
Showers
 Thursday

Thursday: A chance of showers, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 69. West southwest wind 6 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 60%.
Showers
Likely

 Thursday
Night
Thursday Night: Mostly cloudy, with a low around 46. North northwest wind 8 to 13 mph becoming light and variable after midnight. Winds could gust as high as 25 mph.
Mostly Cloudy

 Friday

Friday: Partly sunny, with a high near 71.
Partly Sunny
Hi 57 °F Lo 35 °F Hi 51 °F Lo 31 °F Hi 68 °F Lo 49 °F Hi 69 °F Lo 46 °F Hi 71 °F

 

This Afternoon
 
 A 20 percent chance of showers. Partly sunny, with a high near 57. North wind around 16 mph, with gusts as high as 25 mph.
Tonight
 
 Mostly cloudy, with a low around 35. North wind 9 to 14 mph becoming light north northwest after midnight. Winds could gust as high as 26 mph.
Tuesday
 
 A chance of snow showers before 2pm, then a chance of rain and snow showers. Partly sunny, with a high near 51. Light north northwest wind becoming north 16 to 21 mph in the morning. Winds could gust as high as 34 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Tuesday Night
 
 Mostly clear, with a low around 31. North wind 9 to 14 mph becoming light and variable after midnight. Winds could gust as high as 30 mph.
Wednesday
 
 Sunny, with a high near 68. Light and variable wind becoming west northwest 8 to 13 mph in the afternoon. Winds could gust as high as 24 mph.
Wednesday Night
 
 A 20 percent chance of showers after midnight. Partly cloudy, with a low around 49. West southwest wind 8 to 15 mph, with gusts as high as 29 mph.
Thursday
 
 A chance of showers, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 69. West southwest wind 6 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 60%.
Thursday Night
 
 Mostly cloudy, with a low around 46. North northwest wind 8 to 13 mph becoming light and variable after midnight. Winds could gust as high as 25 mph.
Friday
 
 Partly sunny, with a high near 71.
Friday Night
 
 Mostly cloudy, with a low around 47.
Saturday
 
 A chance of rain. Partly sunny, with a high near 62.
Saturday Night
 
 A slight chance of rain. Mostly cloudy, with a low around 41.
Sunday
 
 Mostly sunny, with a high near 71.

 

Forecast from NOAA-NWS for Helena MT.