Wintry Weather Across the Northern Tier of the U.S.; Fire Weather Concerns in California

Wintry weather is expected from the Northern Plains to Upper Great Lakes with periods of snow and freezing rain. Another system will bring more snow to the Northern Rockies and Northern Plains Wednesday night into Thursday. Meanwhile, fire weather and air quality concerns persist for portions of the Western U.S., including California. Temperatures will run above normal over much of the East. Read More >

Hazardous Weather Conditions

Winter Weather Advisory in effect from October 21, 12:00 PM MDT until October 22, 10:00 AM MDT

En Español

Current conditions at

USCRN SITE NEAR LEWISTOWN 42WSW (JRWM8)

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

-2°C

29°F

Humidity	90%
Wind Speed	NA NA MPH
Barometer	NA
Dewpoint	-3°C (26°F)
Visibility	NA
Last update	20 Oct 11:00 PM MDT

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 October 21, 12:00pm until October 22, 10:00am

Click here for hazard details and duration

Winter Weather Advisory

Tonight

Slight Chance
Snow
Low: -4 °C
Wednesday

Mostly Sunny
then Snow
High: 2 °C
Wednesday
Night

Snow and
Patchy
Blowing Snow
Low: -11 °C
Thursday

Chance Snow
then Mostly
Cloudy
High: -8 °C
Thursday
Night

Mostly Cloudy
Low: -16 °C
Friday

Partly Sunny
then Chance
Snow
High: -8 °C
Friday
Night

Snow
Low: -15 °C
Saturday

Snow and
Patchy
Blowing Snow
High: -12 °C
Saturday
Night

Chance Snow
Low: -18 °C

Detailed Forecast

Tonight

A slight chance of snow before 2am, then a slight chance of snow after 5am. Partly cloudy, with a low around -4. South southwest wind 13 to 16 km/h. Chance of precipitation is 20%.

Wednesday

Snow, mainly after noon. High near 2. West southwest wind 14 to 21 km/h becoming north northwest in the afternoon. Winds could gust as high as 37 km/h. Chance of precipitation is 90%. New snow accumulation of around a centimeter possible.

Wednesday Night

Snow. Patchy blowing snow after midnight. Low around -11. Wind chill values as low as -20. North northwest wind 18 to 24 km/h, with gusts as high as 34 km/h. Chance of precipitation is 100%. New snow accumulation of 10 to 16 centimeters possible.

Thursday

A 40 percent chance of snow before noon. Mostly cloudy, with a high near -8. Wind chill values as low as -20. North northwest wind 21 to 23 km/h, with gusts as high as 29 km/h. New snow accumulation of 1 to 2 centimeters possible.

Thursday Night

Mostly cloudy, with a low around -16. North northeast wind 11 to 13 km/h becoming south southwest after midnight.

Friday

A 30 percent chance of snow after noon. Mostly cloudy, with a high near -8. South southwest wind 13 to 21 km/h becoming east in the afternoon. New snow accumulation of less than a half centimeter possible.

Friday Night

Snow. Low around -15. East northeast wind 13 to 16 km/h. Chance of precipitation is 90%. New snow accumulation of 10 to 16 centimeters possible.

Saturday

Snow. Patchy blowing snow after noon. Cloudy, with a high near -12. North northeast wind 16 to 23 km/h, with gusts as high as 29 km/h.

Saturday Night

A chance of snow. Mostly cloudy, with a low around -18.

Sunday

Mostly sunny, with a high near -12.

Sunday Night

Mostly clear, with a low around -19.

Monday

Mostly sunny, with a high near -3.