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This Saturday, June 27: Great Falls Disaster Response Expo - FREE and Family-Friendly Event, Great Falls College at MSU
SCN26-50: Discontinuation of the State Forecast Product (SFP) for all NWS Central Region, Southern Region, and Western Region Offices: Effective June 29, 2026
The Regional Temperatures and Precipitation Product for the State of Montana (RTPMT) will now be discontinued on July 7, 2026.

Current conditions at

HELENA (HRWM8)

Lat: 46.73167°NLon: 112.01917°WElev: 3800.0ft.

74°F

23°C

Humidity	36%
Wind Speed	E 3 MPH
Barometer	NA
Dewpoint	45°F (7°C)
Visibility	NA
Last update	25 Jun 07:53 PM MDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Marysville MT

Tonight
Low: 52 °F
Slight Chance
T-storms then
Slight Chance
Showers
Friday
High: 60 °F
Chance
Showers then
Showers
Friday Night
Low: 44 °F
Showers
Likely then
Chance
Showers
Saturday
High: 52 °F
Chance
Showers then
Showers
Saturday Night
Low: 37 °F
Showers
Sunday
High: 43 °F
Rain/Snow
Likely then
Showers
Likely
Sunday Night
Low: 38 °F
Showers
Likely and
Breezy
Monday
High: 46 °F
Showers
Likely and
Breezy
Monday Night
Low: 39 °F
Mostly Cloudy
and Breezy
then Mostly
Cloudy

Detailed Forecast

Tonight

A slight chance of showers and thunderstorms before midnight, then a slight chance of showers between midnight and 3am. Mostly cloudy, with a low around 52. North wind 5 to 7 mph becoming light and variable after midnight. Chance of precipitation is 20%.

Friday

Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4pm. High near 60. South wind 5 to 9 mph becoming west in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Friday Night

Showers and thunderstorms likely before 3am, then a chance of showers. Mostly cloudy, with a low around 44. West southwest wind around 9 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.

Saturday

A chance of showers, then showers and possibly a thunderstorm after noon. High near 52. West southwest wind around 9 mph. Chance of precipitation is 80%.

Saturday Night

Showers and possibly a thunderstorm. Low around 37. West wind 11 to 16 mph, with gusts as high as 29 mph. Chance of precipitation is 90%.

Sunday

Rain showers likely before 9am, then rain likely, possibly mixed with snow showers between 9am and noon, then rain showers likely after noon. Some thunder is also possible. Mostly cloudy, with a high near 43. West southwest wind 16 to 18 mph, with gusts as high as 31 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.

Sunday Night

A chance of showers and thunderstorms, then showers likely after midnight. Mostly cloudy, with a low around 38. Breezy, with a west southwest wind 18 to 23 mph, with gusts as high as 36 mph. Chance of precipitation is 70%.

Monday

Showers likely, with thunderstorms also possible after noon. Mostly cloudy, with a high near 46. Breezy, with a west southwest wind 22 to 25 mph, with gusts as high as 39 mph.

Monday Night

Mostly cloudy, with a low around 39. Breezy.

Tuesday

A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 56.

Tuesday Night

A slight chance of showers and thunderstorms. Partly cloudy, with a low around 41.

Wednesday

A slight chance of showers and thunderstorms. Mostly sunny, with a high near 60.

Wednesday Night

Partly cloudy, with a low around 43.

Thursday

Mostly sunny, with a high near 67.