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

Showers and Thunderstorms in the Southwest and Ohio Valley; Mountain Snow in the Northeast

Showers and thunderstorms, along with high-elevation snow, will begin to develop over parts of the Southwest late tonight and is expected to continue through Wednesday morning. Mountain snow over parts the Northeast will continue through Tuesday. A few strong to severe storms and heavy rainfall are possible across portions of the Lower Ohio Valley Tuesday. Read More >

Hazardous Weather Conditions

Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

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

NA

41°F

5°C

Humidity 74%
Wind Speed SSE 4 MPH
Barometer NA
Dewpoint 33°F (1°C)
Visibility NA
Wind Chill38°F (3°C)
Last update 18 Nov 05:15 AM MST
Extended Forecast for

Mammoth WY

  • Today

    Today: Partly sunny, with a high near 46. South southwest wind 6 to 9 mph.

    High: 46 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 31. South southeast wind around 6 mph.

    Low: 31 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of showers. Snow level 6600 feet rising to 7300 feet in the afternoon. Mostly cloudy, with a high near 48. South southeast wind around 6 mph becoming west southwest in the afternoon.

    High: 48 °F

    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 32. South southeast wind around 6 mph.

    Low: 32 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 51. South southeast wind around 5 mph becoming calm in the morning.

    High: 51 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 29. South wind 3 to 5 mph.

    Low: 29 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 50. South wind 5 to 7 mph.

    High: 50 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 30.

    Low: 30 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 46.

    High: 46 °F

    Mostly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 46. South southwest wind 6 to 9 mph.
Tonight
Mostly cloudy, with a low around 31. South southeast wind around 6 mph.
Wednesday
A 20 percent chance of showers. Snow level 6600 feet rising to 7300 feet in the afternoon. Mostly cloudy, with a high near 48. South southeast wind around 6 mph becoming west southwest in the afternoon.
Wednesday Night
Partly cloudy, with a low around 32. South southeast wind around 6 mph.
Thursday
Mostly sunny, with a high near 51. South southeast wind around 5 mph becoming calm in the morning.
Thursday Night
Mostly clear, with a low around 29. South wind 3 to 5 mph.
Friday
Sunny, with a high near 50. South wind 5 to 7 mph.
Friday Night
Partly cloudy, with a low around 30.
Saturday
Mostly sunny, with a high near 46.
Saturday Night
Partly cloudy, with a low around 32.
Sunday
A slight chance of rain and snow showers. Snow level 5900 feet rising to 6600 feet in the afternoon. Partly sunny, with a high near 47.
Sunday Night
A slight chance of rain and snow showers. Snow level 6300 feet. Mostly cloudy, with a low around 32.
Monday
A chance of rain and snow showers. Snow level 6200 feet. Partly sunny, with a high near 44.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mammoth WY
 44.98°N 110.69°W (Elev. 5745 ft)
Last Update:
5:47 am MST Nov 18, 2025
Forecast Valid:
6am MST Nov 18, 2025-6pm MST Nov 24, 2025
 
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