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

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

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

NA

37°F

3°C

Humidity 71%
Wind Speed NW 1 MPH
Barometer NA
Dewpoint 28°F (-2°C)
Visibility NA
Last update 07 Feb 07:15 AM MST
Extended Forecast for

Mammoth WY

  • Today

    Today: Mostly cloudy, then gradually becoming sunny, with a high near 47. South wind 3 to 7 mph.

    High: 47 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: Partly cloudy, with a low around 32. South southeast wind around 7 mph.

    Low: 32 °F

    Partly Cloudy

  • Sunday

    Sunday: Isolated showers after 4pm. Snow level rising to 6900 feet in the afternoon. Partly sunny, with a high near 46. South southwest wind 8 to 13 mph, with gusts as high as 31 mph. Chance of precipitation is 20%.

    High: 46 °F

    Mostly Sunny
    then Isolated
    Showers

  • Sunday Night

    Sunday Night: Rain showers likely before 2am, then rain, possibly mixed with snow showers. Snow level 6800 feet lowering to 6300 feet after midnight . Low around 37. South wind 11 to 14 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

    Low: 37 °F

    Showers
    Likely then
    Rain/Snow

  • Monday

    Monday: Rain and snow showers, becoming all snow after 8am. High near 42. Southwest wind around 10 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    High: 42 °F

    Rain/Snow
    then Snow
    Showers
    Likely

  • Monday Night

    Monday Night: Scattered snow showers before 11pm. Mostly cloudy, with a low around 21. West wind around 5 mph becoming light and variable in the evening. Chance of precipitation is 30%.

    Low: 21 °F

    Scattered
    Snow Showers
    then Mostly
    Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 37. Light south wind.

    High: 37 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of snow showers after 11pm. Mostly cloudy, with a low around 20.

    Low: 20 °F

    Slight Chance
    Snow Showers

  • Wednesday

    Wednesday: A 30 percent chance of snow showers. Partly sunny, with a high near 40.

    High: 40 °F

    Chance Snow
    Showers

Detailed Forecast

Today
Mostly cloudy, then gradually becoming sunny, with a high near 47. South wind 3 to 7 mph.
Tonight
Partly cloudy, with a low around 32. South southeast wind around 7 mph.
Sunday
Isolated showers after 4pm. Snow level rising to 6900 feet in the afternoon. Partly sunny, with a high near 46. South southwest wind 8 to 13 mph, with gusts as high as 31 mph. Chance of precipitation is 20%.
Sunday Night
Rain showers likely before 2am, then rain, possibly mixed with snow showers. Snow level 6800 feet lowering to 6300 feet after midnight . Low around 37. South wind 11 to 14 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Monday
Rain and snow showers, becoming all snow after 8am. High near 42. Southwest wind around 10 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Monday Night
Scattered snow showers before 11pm. Mostly cloudy, with a low around 21. West wind around 5 mph becoming light and variable in the evening. Chance of precipitation is 30%.
Tuesday
Partly sunny, with a high near 37. Light south wind.
Tuesday Night
A 20 percent chance of snow showers after 11pm. Mostly cloudy, with a low around 20.
Wednesday
A 30 percent chance of snow showers. Partly sunny, with a high near 40.
Wednesday Night
Partly cloudy, with a low around 19.
Thursday
Sunny, with a high near 38.
Thursday Night
Partly cloudy, with a low around 21.
Friday
A slight chance of snow showers. Partly sunny, with a high near 37.
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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:
6:33 am MST Feb 7, 2026
Forecast Valid:
7am MST Feb 7, 2026-6pm MST Feb 13, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation