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

Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

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

NA

16°F

-9°C

Humidity 70%
Wind Speed NNE 5 MPH
Barometer NA
Dewpoint 8°F (-13°C)
Visibility NA
Wind Chill8°F (-13°C)
Last update 22 Jan 08:15 PM MST
Extended Forecast for

5 Miles ESE Mount Holmes WY

  • Tonight

    Tonight: Mostly cloudy, with a low around 2. Calm wind.

    Low: 2 °F

    Mostly Cloudy

  • Friday

    Friday: Cloudy through mid morning, then gradual clearing, with a high near 12. Wind chill values as low as -10. Light north wind increasing to 5 to 9 mph in the morning. Winds could gust as high as 20 mph.

    High: 12 °F

    Gradual
    Clearing

  • Friday Night

    Friday Night: Mostly clear, with a low around -12. North northeast wind around 6 mph becoming calm  in the evening.

    Low: -12 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 13. Wind chill values as low as -20. Light and variable wind becoming northwest 5 to 8 mph in the morning.

    High: 13 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of snow showers after 11pm.  Mostly cloudy, with a low around -6. West wind around 6 mph.

    Low: -6 °F

    Slight Chance
    Snow Showers

  • Sunday

    Sunday: Sunny, with a high near 16. West southwest wind 6 to 10 mph, with gusts as high as 21 mph.

    High: 16 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around -1. South southwest wind around 8 mph.

    Low: -1 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 21.

    High: 21 °F

    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 6.

    Low: 6 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 2. Calm wind.
Friday
Cloudy through mid morning, then gradual clearing, with a high near 12. Wind chill values as low as -10. Light north wind increasing to 5 to 9 mph in the morning. Winds could gust as high as 20 mph.
Friday Night
Mostly clear, with a low around -12. North northeast wind around 6 mph becoming calm in the evening.
Saturday
Mostly sunny, with a high near 13. Wind chill values as low as -20. Light and variable wind becoming northwest 5 to 8 mph in the morning.
Saturday Night
A 20 percent chance of snow showers after 11pm. Mostly cloudy, with a low around -6. West wind around 6 mph.
Sunday
Sunny, with a high near 16. West southwest wind 6 to 10 mph, with gusts as high as 21 mph.
Sunday Night
Partly cloudy, with a low around -1. South southwest wind around 8 mph.
Monday
Sunny, with a high near 21.
Monday Night
Mostly cloudy, with a low around 6.
Tuesday
Partly sunny, with a high near 24.
Tuesday Night
Mostly cloudy, with a low around 9.
Wednesday
Partly sunny, with a high near 27.
Wednesday Night
Mostly cloudy, with a low around 11.
Thursday
A slight chance of snow showers. Partly sunny, with a high near 28.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles ESE Mount Holmes WY
 44.81°N 110.75°W (Elev. 7641 ft)
7:48 pm MST Jan 22, 2026
8pm MST Jan 22, 2026-6pm MST Jan 29, 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