Significant Winter Storm to Bring Heavy Snow and Ice Impacts; Dangerously Cold Temperatures Expands Across the East

A significant, long-duration winter storm will bring widespread heavy snow, sleet, and freezing rain from the Southern Rockies to New England through Monday. Widespread travel disruptions, prolonged power outages, and vast tree damage is likely. Frigid temperatures, gusty winds, and dangerous wind chills will expand from the north-central US to the Southern Plains, MS Valley, and Midwest. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

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

-8°F

-22°C

Humidity	68%
Wind Speed	S 4 MPH
Barometer	NA
Dewpoint	-15°F (-26°C)
Visibility	NA
Wind Chill	-18°F (-28°C)
Last update	24 Jan 04:15 AM MST

More Information:

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

Extended Forecast for

5 Miles SSW Mammoth Hot Springs WY

Today
High: 11 °F
Mostly Sunny
then Chance
Snow Showers
Tonight
Low: 0 °F
Chance Snow
Showers
Sunday
High: 15 °F
Becoming
Sunny
Sunday Night
Low: -2 °F
Mostly Clear
Monday
High: 21 °F
Sunny
Monday Night
Low: 7 °F
Mostly Cloudy
Tuesday
High: 26 °F
Mostly Sunny
Tuesday Night
Low: 5 °F
Mostly Clear
Wednesday
High: 30 °F
Mostly Sunny

Detailed Forecast

Today

A 40 percent chance of snow showers, mainly after 3pm. Mostly sunny, with a high near 11. Wind chill values as low as -25. Light and variable wind becoming west northwest 5 to 8 mph in the afternoon. Total daytime snow accumulation of less than a half inch possible.

Tonight

A 50 percent chance of snow showers, mainly before 4am. Mostly cloudy, with a low around 0. Wind chill values as low as -10. West southwest wind 5 to 7 mph becoming northwest after midnight. New snow accumulation of less than a half inch possible.

Sunday

Partly sunny, then gradually becoming sunny, with a high near 15. Wind chill values as low as -15. North northwest wind 6 to 9 mph becoming west in the afternoon.

Sunday Night

Mostly clear, with a low around -2. Wind chill values as low as -15. South wind 7 to 10 mph.

Monday

Sunny, with a high near 21. Southwest wind around 10 mph, with gusts as high as 21 mph.

Monday Night

Mostly cloudy, with a low around 7. South southwest wind 7 to 9 mph.

Tuesday

Mostly sunny, with a high near 26. South wind around 6 mph.

Tuesday Night

Mostly clear, with a low around 5.

Wednesday

Mostly sunny, with a high near 30.