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

Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

Lat: 44.977222°NLon: 110.695278°WElev: 6138.0ft.

23°F

-5°C

Humidity	81%
Wind Speed	S 2 MPH
Barometer	NA
Dewpoint	18°F (-8°C)
Visibility	NA
Last update	27 Dec 12:15 PM MST

More Information:

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

Extended Forecast for

5 Miles ESE Mount Holmes WY

Winter Weather Advisory December 27, 12:35pm until December 27, 05:00pm

Click here for hazard details and duration

Winter Weather Advisory

Winter Weather Advisory December 27, 12:35pm until December 27, 05:00pm
NOW until 5:00pm Sat
Winter Weather Advisory
This Afternoon
High: 23 °F
Chance Snow
Showers
Tonight
Low: -7 °F
Partly Cloudy
Sunday
High: 11 °F
Sunny
Sunday Night
Low: -1 °F
Mostly Clear
Monday
High: 22 °F
Sunny
Monday Night
Low: 7 °F
Partly Cloudy
Tuesday
High: 28 °F
Mostly Sunny
Tuesday Night
Low: 9 °F
Mostly Clear

Detailed Forecast

This Afternoon

A 50 percent chance of snow showers, mainly before 2pm. Some thunder is also possible. Partly sunny, with a high near 23. Wind chill values as low as -5. West wind 8 to 14 mph, with gusts as high as 22 mph. Total daytime snow accumulation of 1 to 3 inches possible.

Tonight

Partly cloudy, with a low around -7. Wind chill values as low as -20. West northwest wind 5 to 9 mph.

Sunday

Sunny, with a high near 11. Wind chill values as low as -20. Southwest wind 6 to 9 mph.

Sunday Night

Mostly clear, with a low around -1. Wind chill values as low as -10. South wind around 6 mph.

Monday

Sunny, with a high near 22. Southwest wind around 6 mph.

Monday Night

Partly cloudy, with a low around 7. South southwest wind around 6 mph.

Tuesday

Mostly sunny, with a high near 28. South southwest wind around 6 mph.