High-Impact and Far-Reaching Winter Storm Continues; Cold Expands and Persists

A major winter storm will shift its impacts into the Northeast U.S. with heavy snow through tonight while over the Mid-Atlantic, sleet and freezing rain will diminish. Extremely cold air behind the storm will prolong dangerous travel and infrastructure impacts. Sub-zero low temperatures are expected nearly every morning from the Northern Plains through the Ohio Valley and into the Northeast. Read More >

Hazardous Weather Conditions

Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

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

NA

10°F

-12°C

Humidity 48%
Wind Speed SSE 4 MPH
Barometer NA
Dewpoint -6°F (-21°C)
Visibility NA
Wind Chill3°F (-16°C)
Last update 25 Jan 08:15 PM MST
Extended Forecast for

Mammoth WY

  • Tonight

    Tonight: Mostly clear, with a temperature rising to around 10 by 2am. Wind chill values as low as -10. South southeast wind 6 to 9 mph.

    Low: 6 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 27. Wind chill values as low as -5. South southwest wind around 8 mph.

    High: 27 °F

    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 13. South wind around 7 mph.

    Low: 13 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 35. South wind 3 to 6 mph.

    High: 35 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 15. South wind around 7 mph.

    Low: 15 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 36. South southwest wind around 6 mph.

    High: 36 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 16. South wind around 6 mph.

    Low: 16 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 38.

    High: 38 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 19.

    Low: 19 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a temperature rising to around 10 by 2am. Wind chill values as low as -10. South southeast wind 6 to 9 mph.
Monday
Sunny, with a high near 27. Wind chill values as low as -5. South southwest wind around 8 mph.
Monday Night
Mostly cloudy, with a low around 13. South wind around 7 mph.
Tuesday
Mostly sunny, with a high near 35. South wind 3 to 6 mph.
Tuesday Night
Partly cloudy, with a low around 15. South wind around 7 mph.
Wednesday
Partly sunny, with a high near 36. South southwest wind around 6 mph.
Wednesday Night
Partly cloudy, with a low around 16. South wind around 6 mph.
Thursday
Mostly sunny, with a high near 38.
Thursday Night
Mostly cloudy, with a low around 19.
Friday
Partly sunny, with a high near 39.
Friday Night
Mostly cloudy, with a low around 25.
Saturday
Partly sunny, with a high near 42.
Saturday Night
Mostly cloudy, with a low around 24.
Sunday
Mostly sunny, with a high near 43.
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ABOUT THIS FORECAST

 
Point Forecast:
Mammoth WY
 44.98°N 110.69°W (Elev. 5745 ft)
9:01 pm MST Jan 25, 2026
9pm MST Jan 25, 2026-6pm MST Feb 1, 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