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

Severe Thunderstorms and Heavy Rain in the Southern U.S.; Snow in the Northern Rockies and Northern Plains

A storm system will shift from eastern Texas into the lower Mississippi Valley today with additional threats of severe thunderstorms and heavy to excessive rainfall which may bring flooding. In the northern U.S., a storm will bring heavy snow and gusty winds over parts of the northern Rockies, northern Plains, and Upper Midwest today into Wednesday. Read More >

Hazardous Weather Conditions

Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

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

NA

36°F

2°C

Humidity 71%
Wind Speed SE 9 MPH
Barometer NA
Dewpoint 27°F (-3°C)
Visibility NA
Wind Chill29°F (-2°C)
Last update 24 Nov 10:15 AM MST
Extended Forecast for

Mammoth WY

  • Today

    Today: Rain and snow showers likely before 2pm, then snow showers. Temperature rising to near 39 by noon, then falling to around 33 during the remainder of the day. Breezy, with a south wind 13 to 23 mph becoming west northwest in the afternoon. Winds could gust as high as 36 mph. Chance of precipitation is 90%. Total daytime snow accumulation of less than a half inch possible.

    High: 39 °F⇓

    Breezy.
    Isolated
    Rain/Snow
    then
    Rain/Snow

  • Tonight

    Tonight: Partly cloudy, with a low around 16. West northwest wind 6 to 13 mph becoming south southwest in the evening. Winds could gust as high as 26 mph.

    Low: 16 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 34. Southwest wind 5 to 13 mph.

    High: 34 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 21. South southwest wind 8 to 11 mph.

    Low: 21 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 40 percent chance of snow showers, mainly before 11am. Mostly cloudy, with a high near 38. South southwest wind around 8 mph. Little or no snow accumulation expected.

    High: 38 °F

    Chance Snow
    Showers

  • Wednesday Night

    Wednesday Night: A 30 percent chance of snow showers. Mostly cloudy, with a low around 29. South southwest wind around 7 mph.

    Low: 29 °F

    Chance Snow
    Showers

  • Thanksgiving Day

    Thanksgiving Day: A chance of rain and snow showers. Snow level rising to 6400 feet in the afternoon. Mostly cloudy, with a high near 42. South southwest wind around 6 mph. Chance of precipitation is 40%.

    High: 42 °F

    Chance
    Rain/Snow

  • Thursday Night

    Thursday Night: A chance of rain and snow showers. Snow level 6400 feet lowering to 5700 feet after midnight . Mostly cloudy, with a low around 28. Chance of precipitation is 30%.

    Low: 28 °F

    Chance
    Rain/Snow

  • Friday

    Friday: A 50 percent chance of snow showers. Mostly cloudy, with a high near 39.

    High: 39 °F

    Chance Snow
    Showers

Detailed Forecast

Today
Rain and snow showers likely before 2pm, then snow showers. Temperature rising to near 39 by noon, then falling to around 33 during the remainder of the day. Breezy, with a south wind 13 to 23 mph becoming west northwest in the afternoon. Winds could gust as high as 36 mph. Chance of precipitation is 90%. Total daytime snow accumulation of less than a half inch possible.
Tonight
Partly cloudy, with a low around 16. West northwest wind 6 to 13 mph becoming south southwest in the evening. Winds could gust as high as 26 mph.
Tuesday
Mostly sunny, with a high near 34. Southwest wind 5 to 13 mph.
Tuesday Night
Mostly cloudy, with a low around 21. South southwest wind 8 to 11 mph.
Wednesday
A 40 percent chance of snow showers, mainly before 11am. Mostly cloudy, with a high near 38. South southwest wind around 8 mph. Little or no snow accumulation expected.
Wednesday Night
A 30 percent chance of snow showers. Mostly cloudy, with a low around 29. South southwest wind around 7 mph.
Thanksgiving Day
A chance of rain and snow showers. Snow level rising to 6400 feet in the afternoon. Mostly cloudy, with a high near 42. South southwest wind around 6 mph. Chance of precipitation is 40%.
Thursday Night
A chance of rain and snow showers. Snow level 6400 feet lowering to 5700 feet after midnight . Mostly cloudy, with a low around 28. Chance of precipitation is 30%.
Friday
A 50 percent chance of snow showers. Mostly cloudy, with a high near 39.
Friday Night
A 40 percent chance of snow showers. Mostly cloudy, with a low around 16.
Saturday
A chance of snow showers. Partly sunny, with a high near 28.
Saturday Night
A chance of snow showers. Mostly cloudy, with a low around 5.
Sunday
A chance of snow showers. Mostly sunny, with a high near 24.
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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:
9:31 am MST Nov 24, 2025
Forecast Valid:
10am MST Nov 24, 2025-6pm MST Nov 30, 2025
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation