Major Winter Storm to Bring Heavy Snow and Ice Impacts; Dangerously Cold in the North-Central U.S.

A large, long-duration winter storm is expected to bring widespread heavy snow, sleet, and freezing rain from the Southern Rockies/Plains into the Mid-South beginning Friday, spreading eastward to the Mid-Atlantic and New England this weekend. An Arctic front will bring frigid temperatures and gusty winds that will lead to dangerous wind chills from the Northern Plains and Upper Midwest. Read More >

Hazardous Weather Conditions

Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

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

NA

24°F

-4°C

Humidity 49%
Wind Speed SSE 2 MPH
Barometer NA
Dewpoint 8°F (-13°C)
Visibility NA
Last update 22 Jan 12:15 PM MST
Extended Forecast for

Mammoth WY

  • This Afternoon

    This Afternoon: Sunny, with a high near 31. Calm wind.

    High: 31 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 10. Calm wind.

    Low: 10 °F

    Increasing
    Clouds

  • Friday

    Friday: Mostly cloudy, then gradually becoming sunny, with a high near 18. Northwest wind 5 to 8 mph, with gusts as high as 20 mph.

    High: 18 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: Mostly clear, with a low around -1. North northwest wind around 6 mph becoming calm  in the evening.

    Low: -1 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 21. Calm wind becoming northwest around 6 mph in the afternoon.

    High: 21 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 4. West northwest wind around 6 mph.

    Low: 4 °F

    Mostly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 26. Southwest wind around 6 mph.

    High: 26 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 7.

    Low: 7 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 31.

    High: 31 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 31. Calm wind.
Tonight
Increasing clouds, with a low around 10. Calm wind.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 18. Northwest wind 5 to 8 mph, with gusts as high as 20 mph.
Friday Night
Mostly clear, with a low around -1. North northwest wind around 6 mph becoming calm in the evening.
Saturday
Mostly sunny, with a high near 21. Calm wind becoming northwest around 6 mph in the afternoon.
Saturday Night
Mostly cloudy, with a low around 4. West northwest wind around 6 mph.
Sunday
Sunny, with a high near 26. Southwest wind around 6 mph.
Sunday Night
Mostly clear, with a low around 7.
Monday
Sunny, with a high near 31.
Monday Night
Mostly cloudy, with a low around 14.
Tuesday
Partly sunny, with a high near 33.
Tuesday Night
Mostly cloudy, with a low around 17.
Wednesday
Partly sunny, with a high near 36.
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ABOUT THIS FORECAST

 
Point Forecast:
Mammoth WY
 44.98°N 110.69°W (Elev. 5745 ft)
12:33 pm MST Jan 22, 2026
1pm MST Jan 22, 2026-6pm MST Jan 28, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database