Tracking Late December Winter Storm Expected to Impact the Northern Plains through the Northeast U.S.

A winter storm system will rapidly intensify over the Midwest on Sunday and track through the Great Lakes on Monday. Periods of heavy snow are anticipated across the Upper Great Lakes late Sunday and continuing into Monday. At least 1/10 inch of ice accumulation is expected from a wintry mix across much of the interior Northeast U.S. starting Sunday afternoon. Read More >

Hazardous Weather Conditions

Cold Weather Advisory until December 27, 10:00 PM MST

Current conditions at

USCRN SITE NEAR LEWISTOWN 42WSW (JRWM8)

Lat: 46.88472°NLon: 110.28944°WElev: 5045.0ft.

2°F

-17°C

Humidity	66%
Wind Speed	NA NA MPH
Barometer	NA
Dewpoint	-7°F (-22°C)
Visibility	NA
Last update	27 Dec 04:00 PM MST

More Information:

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

Extended Forecast for

6 Miles WSW Windham MT

Cold Weather Advisory December 27, 04:56pm until December 27, 10:00pm

Click here for hazard details and duration

Cold Weather Advisory

Cold Weather Advisory December 27, 04:56pm until December 27, 10:00pm
NOW until 10:00pm Sat
Cold Weather Advisory
This Afternoon
High: -3 °F
Slight Chance
Snow
Tonight
Low: -3 °F⇑
Partly Cloudy
Sunday
High: 26 °F
Sunny
Sunday Night
Low: 15 °F
Mostly Clear
Monday
High: 43 °F
Mostly Sunny
Monday Night
Low: 28 °F
Mostly Cloudy
Tuesday
High: 49 °F
Partly Sunny
Tuesday Night
Low: 32 °F
Partly Cloudy

Detailed Forecast

This Afternoon

A 20 percent chance of snow. Partly sunny and cold, with a steady temperature around -3. Wind chill values as low as -25. Northwest wind around 18 mph, with gusts as high as 29 mph.

Tonight

Partly cloudy, with a temperature rising to around 1 by 5am. Wind chill values as low as -25. West northwest wind 7 to 15 mph, with gusts as high as 23 mph.

Sunday

Sunny, with a high near 26. Wind chill values as low as -10. West northwest wind 6 to 9 mph.

Sunday Night

Mostly clear, with a low around 15. Southwest wind 8 to 11 mph.

Monday

Mostly sunny, with a high near 43. West southwest wind around 11 mph, with gusts as high as 20 mph.

Monday Night

Mostly cloudy, with a low around 28. West southwest wind around 10 mph.

Tuesday

Partly sunny, with a high near 49. West southwest wind around 9 mph.

Tuesday Night

Partly cloudy, with a low around 32. West southwest wind 10 to 14 mph, with gusts as high as 20 mph.