National Weather Service Forecast for: Helena MT
Issued by: National Weather Service Great Falls, MT
Updated: 4:47 am MDT Mar 19, 2026
 
Today

Today: Mostly sunny, with a high near 67. West wind 11 to 17 mph, with gusts as high as 30 mph.
Mostly Sunny

 Tonight

Tonight: Partly cloudy, with a low around 47. West wind 7 to 11 mph becoming south after midnight. Winds could gust as high as 28 mph.
Partly Cloudy

 Friday

Friday: Mostly sunny, with a high near 72. Breezy, with a south wind 7 to 12 mph becoming west 17 to 22 mph in the afternoon. Winds could gust as high as 44 mph.
Mostly Sunny
then Sunny
and Breezy
 Friday
Night
Friday Night: Partly cloudy, with a low around 46. Southwest wind 12 to 17 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 44 mph.
Partly Cloudy

 Saturday

Saturday: A 40 percent chance of rain. Partly sunny, with a high near 59. West southwest wind 8 to 16 mph, with gusts as high as 33 mph.
Chance Rain

 Saturday
Night
Saturday Night: Mostly clear, with a low around 29. West northwest wind 10 to 15 mph becoming light west after midnight. Winds could gust as high as 32 mph.
Mostly Clear

 Sunday

Sunday: Sunny, with a high near 54. Calm wind becoming west 5 to 7 mph in the afternoon. Winds could gust as high as 18 mph.
Sunny

 Sunday
Night
Sunday Night: Partly cloudy, with a low around 32. West northwest wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 20 mph.
Partly Cloudy

 Monday

Monday: Mostly cloudy, with a high near 57.
Mostly Cloudy
Hi 67 °F Lo 47 °F Hi 72 °F Lo 46 °F Hi 59 °F Lo 29 °F Hi 54 °F Lo 32 °F Hi 57 °F

 

Today
 
 Mostly sunny, with a high near 67. West wind 11 to 17 mph, with gusts as high as 30 mph.
Tonight
 
 Partly cloudy, with a low around 47. West wind 7 to 11 mph becoming south after midnight. Winds could gust as high as 28 mph.
Friday
 
 Mostly sunny, with a high near 72. Breezy, with a south wind 7 to 12 mph becoming west 17 to 22 mph in the afternoon. Winds could gust as high as 44 mph.
Friday Night
 
 Partly cloudy, with a low around 46. Southwest wind 12 to 17 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 44 mph.
Saturday
 
 A 40 percent chance of rain. Partly sunny, with a high near 59. West southwest wind 8 to 16 mph, with gusts as high as 33 mph.
Saturday Night
 
 Mostly clear, with a low around 29. West northwest wind 10 to 15 mph becoming light west after midnight. Winds could gust as high as 32 mph.
Sunday
 
 Sunny, with a high near 54. Calm wind becoming west 5 to 7 mph in the afternoon. Winds could gust as high as 18 mph.
Sunday Night
 
 Partly cloudy, with a low around 32. West northwest wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 20 mph.
Monday
 
 Mostly cloudy, with a high near 57.
Monday Night
 
 Mostly cloudy, with a low around 37.
Tuesday
 
 A slight chance of rain. Mostly cloudy, with a high near 66.
Tuesday Night
 
 A chance of rain. Mostly cloudy, with a low around 42.
Wednesday
 
 A chance of rain. Partly sunny, with a high near 57. Breezy.

 

Forecast from NOAA-NWS for Helena MT.