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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.

unknown precip

50°F

10°C

Humidity	100%
Wind Speed	NNW 4 MPH
Barometer	NA
Dewpoint	50°F (10°C)
Visibility	NA
Wind Chill	49°F (9°C)
Last update	28 Jun 05:00 AM MDT

More Information:

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

Extended Forecast for

4 Miles WNW Marysville MT

Overnight
Low: 44 °F
Rain
Sunday
High: 46 °F
Rain
Sunday Night
Low: 45 °F
Rain
Monday
High: 48 °F
Rain
Monday Night
Low: 44 °F
Rain then
Chance Rain
Tuesday
High: 62 °F
Slight Chance
Showers then
Chance
T-storms
Tuesday Night
Low: 46 °F
Chance
T-storms then
Partly Cloudy
Wednesday
High: 65 °F
Mostly Sunny
then Chance
T-storms
Wednesday Night
Low: 46 °F
Slight Chance
T-storms then
Partly Cloudy

Detailed Forecast

Overnight

Rain. Low around 44. West wind around 11 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.

Sunday

Rain, mainly before 5pm. High near 46. West wind 11 to 16 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

Sunday Night

Rain, mainly after 9pm. Steady temperature around 45. West southwest wind 14 to 18 mph, with gusts as high as 31 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

Monday

Rain before 3pm, then rain likely and possibly a thunderstorm between 3pm and 5pm, then a chance of rain and thunderstorms after 5pm. High near 48. West southwest wind 14 to 16 mph, with gusts as high as 29 mph. Chance of precipitation is 100%.

Monday Night

Rain, mainly before midnight. Low around 44. West wind 9 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.

Tuesday

A chance of showers, with thunderstorms also possible after 3pm. Partly sunny, with a high near 62. West southwest wind around 9 mph, with gusts as high as 18 mph. Chance of precipitation is 30%.

Tuesday Night

A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Partly cloudy, with a low around 46. West wind 6 to 8 mph. Chance of precipitation is 30%.

Wednesday

A chance of showers and thunderstorms after noon. Partly sunny, with a high near 65. West southwest wind 7 to 9 mph, with gusts as high as 18 mph.

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 after noon. Mostly sunny, with a high near 68.

Thursday Night

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

Friday

Showers likely and possibly a thunderstorm. Partly sunny, with a high near 64.

Friday Night

A chance of showers and thunderstorms. Partly cloudy, with a low around 45.