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

9°F

-13°C

Humidity 63%
Wind Speed NE 6 MPH
Barometer NA
Dewpoint -1°F (-18°C)
Visibility NA
Wind Chill-1°F (-18°C)
Last update 23 Jan 04:15 PM MST
Extended Forecast for

Mammoth Hot Springs WY

  • Tonight

    Tonight: Mostly clear, with a low around -3. Northwest wind 5 to 7 mph becoming calm  in the evening.

    Low: -3 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 20. Wind chill values as low as -10. Calm wind becoming northwest around 6 mph in the afternoon.

    High: 20 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of snow showers, mainly after 11pm.  Mostly cloudy, with a low around 7. Wind chill values as low as zero. West southwest wind around 6 mph.

    Low: 7 °F

    Chance Snow
    Showers

  • Sunday

    Sunday: Partly sunny, then gradually becoming sunny, with a high near 23. Wind chill values as low as zero. Northwest wind around 6 mph.

    High: 23 °F

    Becoming
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 5. South wind 6 to 8 mph.

    Low: 5 °F

    Mostly Clear

  • Monday

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

    High: 30 °F

    Mostly Sunny

  • Monday Night

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

    Low: 14 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 34.

    High: 34 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 13.

    Low: 13 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around -3. Northwest wind 5 to 7 mph becoming calm in the evening.
Saturday
Mostly sunny, with a high near 20. Wind chill values as low as -10. Calm wind becoming northwest around 6 mph in the afternoon.
Saturday Night
A 30 percent chance of snow showers, mainly after 11pm. Mostly cloudy, with a low around 7. Wind chill values as low as zero. West southwest wind around 6 mph.
Sunday
Partly sunny, then gradually becoming sunny, with a high near 23. Wind chill values as low as zero. Northwest wind around 6 mph.
Sunday Night
Mostly clear, with a low around 5. South wind 6 to 8 mph.
Monday
Mostly sunny, with a high near 30. South wind around 7 mph.
Monday Night
Partly cloudy, with a low around 14. South wind around 7 mph.
Tuesday
Mostly sunny, with a high near 34.
Tuesday Night
Mostly clear, with a low around 13.
Wednesday
Mostly sunny, with a high near 37.
Wednesday Night
Partly cloudy, with a low around 18.
Thursday
Mostly sunny, with a high near 39.
Thursday Night
Partly cloudy, with a low around 19.
Friday
Mostly sunny, with a high near 39.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Mammoth Hot Springs WY
 44.98°N 110.69°W (Elev. 5745 ft)
4:17 pm MST Jan 23, 2026
5pm MST Jan 23, 2026-6pm MST Jan 30, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database