Significant Winter Storm to Bring Heavy Snow and Ice Impacts; Dangerously Cold Temperatures Expands Across the East; Severe Storm Threat in the Gulf States Sunday

A significant winter storm is underway, bringing widespread heavy snow, sleet, and freezing rain from the Southern Rockies to New England through Monday. Extremely cold air will follow, prolonging dangerous travel and infrastructure impacts into next week. Severe thunderstorms may produce damaging gusts and tornadoes across the eastern Gulf Coast states Sunday morning and afternoon. Read More >

Hazardous Weather Conditions

Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

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

NA

6°F

-14°C

Humidity 79%
Wind Speed NW 8 MPH
Barometer NA
Dewpoint 1°F (-17°C)
Visibility NA
Wind Chill-7°F (-22°C)
Last update 25 Jan 09:15 AM MST
Extended Forecast for

5 Miles SSW Mammoth Hot Springs WY

  • Today

    Today: Sunny, with a high near 15. Wind chill values as low as -10. North wind 5 to 10 mph becoming light and variable  in the afternoon.

    High: 15 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 0. Wind chill values as low as -15. South wind 7 to 13 mph.

    Low: 0 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 21. Wind chill values as low as -15. Southwest wind around 10 mph, with gusts as high as 22 mph.

    High: 21 °F

    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 6. Wind chill values as low as -5. South southwest wind 7 to 9 mph.

    Low: 6 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 27. South southwest wind around 7 mph.

    High: 27 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 6. South wind 6 to 8 mph.

    Low: 6 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 30. South wind around 7 mph.

    High: 30 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 10.

    Low: 10 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 31.

    High: 31 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 15. Wind chill values as low as -10. North wind 5 to 10 mph becoming light and variable in the afternoon.
Tonight
Mostly clear, with a low around 0. Wind chill values as low as -15. South wind 7 to 13 mph.
Monday
Sunny, with a high near 21. Wind chill values as low as -15. Southwest wind around 10 mph, with gusts as high as 22 mph.
Monday Night
Mostly cloudy, with a low around 6. Wind chill values as low as -5. South southwest wind 7 to 9 mph.
Tuesday
Mostly sunny, with a high near 27. South southwest wind around 7 mph.
Tuesday Night
Partly cloudy, with a low around 6. South wind 6 to 8 mph.
Wednesday
Mostly sunny, with a high near 30. South wind around 7 mph.
Wednesday Night
Partly cloudy, with a low around 10.
Thursday
Mostly sunny, with a high near 31.
Thursday Night
Partly cloudy, with a low around 13.
Friday
Partly sunny, with a high near 32.
Friday Night
Mostly cloudy, with a low around 18.
Saturday
Partly sunny, with a high near 33.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSW Mammoth Hot Springs WY
 44.89°N 110.74°W (Elev. 7402 ft)
10:18 am MST Jan 25, 2026
10am MST Jan 25, 2026-6pm MST Jan 31, 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