A Large Storm System Will Impact The Western U.S. This Weekend

A large storm system will deliver widespread impacts to the Western U.S. this weekend. Widespread heavy snow, heavy rain, strong thunderstorms and a number of coastal hazards will likely cause travel issues. The locally heavy rain in north-central California and southwest Oregon may cause flash flooding, especially near recent and vulnerable burn scar areas. Read More >

Hazardous Weather Conditions

Winter Weather Advisory until December 8, 06:00 PM MST

En Español

Current conditions at

USCRN SITE NEAR LEWISTOWN 42WSW (JRWM8)

Lat: 46.88472°NLon: 110.28944°WElev: 5045ft.

24°F

-5°C

Humidity	88%
Wind Speed	NA NA MPH
Barometer	1017.95 mb
Dewpoint	21°F (-7°C)
Visibility	NA
Last update	08 Dec 07:00 AM MST

More Information:

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

Extended Forecast for

7 Miles SW Windham MT

Winter Weather Advisory until December 8, 06:00pm

Click here for hazard details and duration

Winter Weather Advisory

Winter Weather Advisory until December 8, 06:00pm

NOW until
6:00pm Sun

Winter Weather Advisory
Today

Snow Likely
then Chance
Snow
High: 31 °F⇓
Tonight

Partly Cloudy
Low: 11 °F⇑
Monday

Mostly Cloudy
High: 33 °F
Monday
Night

Chance Snow
then Mostly
Cloudy
Low: 19 °F
Tuesday

Partly Sunny
High: 35 °F
Tuesday
Night

Mostly Cloudy
Low: 25 °F
Wednesday

Partly Sunny
High: 38 °F
Wednesday
Night

Partly Cloudy
Low: 26 °F

Detailed Forecast

Today

Snow likely, mainly before 2pm. Cloudy through mid morning, then gradual clearing, with a temperature falling to around 12 by 5pm. Wind chill values as low as -1. North northwest wind 8 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 70%. Total daytime snow accumulation of less than one inch possible.

Tonight

Partly cloudy, with a temperature rising to around 23 by 5am. Wind chill values as low as -1. West wind 8 to 14 mph, with gusts as high as 21 mph.

Monday

Mostly cloudy, with a high near 33. West wind 13 to 16 mph, with gusts as high as 23 mph.

Monday Night

A 30 percent chance of snow before 11pm. Mostly cloudy, with a low around 19. Northwest wind around 11 mph becoming southwest in the evening. Little or no snow accumulation expected.

Tuesday

Partly sunny, with a high near 35. West wind around 11 mph.

Tuesday Night

Mostly cloudy, with a low around 25.

Wednesday

Partly sunny, with a high near 38.

Wednesday Night

Partly cloudy, with a low around 26.

Thursday

Partly sunny, with a high near 41. Breezy.

Thursday Night

A slight chance of snow after 11pm. Mostly cloudy, with a low around 30. Breezy.