National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

A Couple of Fast Moving Storms Affecting Areas Along and East of the Rockies

A couple of storm systems will impact travel conditions through the first half of this weekend. Heavy snow from the mountains of the West will move into the upper Midwest and upper Great Lakes through tonight. Record warmth and Gulf moisture along and east of the Mississippi River will fuel severe thunderstorms, heavy rainfall, fog for the Tennessee Valley and deep South on Friday into Saturday. Read More >

Hazardous Weather Conditions

Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

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

NA

22°F

-6°C

Humidity 63%
Wind Speed WNW 5 MPH
Barometer NA
Dewpoint 11°F (-12°C)
Visibility NA
Wind Chill15°F (-9°C)
Last update 08 Jan 05:15 PM MST
Extended Forecast for

Mammoth WY

  • Tonight

    Tonight: A 20 percent chance of snow showers after 1am. Mostly cloudy, with a low around 12. West wind around 6 mph becoming calm.

    Low: 12 °F

    Partly Cloudy
    then Slight
    Chance Snow
    Showers

  • Friday

    Friday: A 20 percent chance of snow showers before 4pm. Mostly cloudy, with a high near 27. South wind 5 to 8 mph.

    High: 27 °F

    Slight Chance
    Snow Showers

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 18. Southwest wind 6 to 8 mph.

    Low: 18 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 35. South southwest wind around 6 mph.

    High: 35 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 17. South wind around 7 mph.

    Low: 17 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 39. South southeast wind around 6 mph.

    High: 39 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 18. South wind around 7 mph.

    Low: 18 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 39.

    High: 39 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 24.

    Low: 24 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A 20 percent chance of snow showers after 1am. Mostly cloudy, with a low around 12. West wind around 6 mph becoming calm.
Friday
A 20 percent chance of snow showers before 4pm. Mostly cloudy, with a high near 27. South wind 5 to 8 mph.
Friday Night
Mostly cloudy, with a low around 18. Southwest wind 6 to 8 mph.
Saturday
Mostly sunny, with a high near 35. South southwest wind around 6 mph.
Saturday Night
Mostly cloudy, with a low around 17. South wind around 7 mph.
Sunday
Mostly sunny, with a high near 39. South southeast wind around 6 mph.
Sunday Night
Partly cloudy, with a low around 18. South wind around 7 mph.
Monday
Partly sunny, with a high near 39.
Monday Night
Mostly cloudy, with a low around 24.
Tuesday
A slight chance of snow showers before 11am, then a slight chance of rain and snow showers. Partly sunny, with a high near 41. Chance of precipitation is 20%.
Tuesday Night
Mostly cloudy, with a low around 26.
Wednesday
Mostly sunny, with a high near 45.
Wednesday Night
Mostly clear, with a low around 22.
Thursday
A slight chance of snow showers. Mostly sunny, with a high near 41.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mammoth WY
 44.98°N 110.69°W (Elev. 5745 ft)
Last Update:
4:47 pm MST Jan 8, 2026
Forecast Valid:
5pm MST Jan 8, 2026-6pm MST Jan 15, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation