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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

Sieben I-15 MP 216 (MTSBN)

Lat: 46.88748267°NLon: 112.1111196°WElev: 4199.0ft.

56°F

13°C

Humidity	67%
Wind Speed	W 13 MPH
Barometer	NA
Dewpoint	45°F (7°C)
Visibility	NA
Last update	27 Jun 07:30 AM MDT

More Information:

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

Extended Forecast for

5 Miles NW Marysville MT

Today
High: 59 °F
Chance
Showers then
Showers
Likely
Tonight
Low: 42 °F
Showers
Sunday
High: 47 °F
Rain
Sunday Night
Low: 41 °F
Rain
Monday
High: 50 °F
Rain
Monday Night
Low: 42 °F
Chance
Showers
Tuesday
High: 63 °F
Partly Sunny
then Slight
Chance
T-storms
Tuesday Night
Low: 45 °F
Slight Chance
T-storms then
Partly Cloudy
Wednesday
High: 67 °F
Slight Chance
Showers then
Chance
T-storms

Detailed Forecast

Today

A chance of showers, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 59. West wind 6 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tonight

Showers and possibly a thunderstorm before midnight, then rain, mainly after midnight. Low around 42. West wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

Sunday

Rain, mainly before 4pm. High near 47. West southwest wind 11 to 18 mph, with gusts as high as 32 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

Sunday Night

Rain. Low around 41. West southwest wind 14 to 18 mph, with gusts as high as 33 mph. Chance of precipitation is 90%.

Monday

Rain. High near 50. West southwest wind around 16 mph, with gusts as high as 31 mph. Chance of precipitation is 100%.

Monday Night

A 50 percent chance of showers. Mostly cloudy, with a low around 42. West southwest wind 8 to 14 mph, with gusts as high as 26 mph.

Tuesday

A 20 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 63. West southwest wind 6 to 10 mph, with gusts as high as 18 mph.

Tuesday Night

A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 45. West wind 5 to 9 mph.

Wednesday

A slight chance of showers, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 67.

Wednesday Night

A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 46.

Thursday

A chance of showers and thunderstorms. Mostly sunny, with a high near 71.

Thursday Night

A slight chance of showers and thunderstorms. Partly cloudy, with a low around 49.

Friday

A chance of showers and thunderstorms. Partly sunny, with a high near 70.