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.

-6°F

-21°C

Humidity	73%
Wind Speed	SSE 3 MPH
Barometer	NA
Dewpoint	-13°F (-25°C)
Visibility	NA
Last update	24 Jan 01:15 AM MST

More Information:

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

Extended Forecast for

Mammoth WY

Overnight
Low: -4 °F
Mostly Clear
Saturday
High: 15 °F
Mostly Sunny
then Chance
Snow Showers
Saturday Night
Low: 8 °F
Chance Snow
Showers
Sunday
High: 22 °F
Becoming
Sunny
Sunday Night
Low: 3 °F
Mostly Clear
Monday
High: 30 °F
Sunny
Monday Night
Low: 14 °F
Partly Cloudy
Tuesday
High: 35 °F
Mostly Sunny
Tuesday Night
Low: 13 °F
Mostly Clear

Detailed Forecast

Overnight

Mostly clear, with a low around -4. Wind chill values as low as -15. Light south southeast wind.

Saturday

A 30 percent chance of snow showers, mainly after 4pm. Mostly sunny, with a high near 15. Wind chill values as low as -15. Calm wind becoming northwest 5 to 7 mph in the afternoon.

Saturday Night

A 50 percent chance of snow showers, mainly before 4am. Mostly cloudy, with a low around 8. Wind chill values as low as zero. Northwest wind 5 to 8 mph. New snow accumulation of less than a half inch possible.

Sunday

Partly sunny, then gradually becoming sunny, with a high near 22. Wind chill values as low as zero. Northwest wind 3 to 6 mph.

Sunday Night

Mostly clear, with a low around 3. South wind 5 to 8 mph.

Monday

Sunny, with a high near 30. South southwest wind 6 to 8 mph.

Monday Night

Partly cloudy, with a low around 14. South wind around 7 mph.

Tuesday

Mostly sunny, with a high near 35.

Tuesday Night

Mostly clear, with a low around 13.