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

32°F

0°C

Humidity 65%
Wind Speed S 2 MPH
Barometer NA
Dewpoint 21°F (-6°C)
Visibility NA
Last update 04 Apr 08:15 AM MDT
Extended Forecast for

Mammoth WY

  • Today

    Today: Sunny, with a high near 54. South wind 5 to 8 mph becoming west northwest in the morning. Winds could gust as high as 20 mph.

    High: 54 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 30. West northwest wind 5 to 8 mph becoming light and variable after midnight.

    Low: 30 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 59. Light and variable wind becoming southwest around 6 mph in the afternoon.

    High: 59 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 35. West southwest wind around 6 mph becoming light and variable.

    Low: 35 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 61. Light and variable wind becoming southwest 5 to 8 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 61 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 36. South wind 5 to 8 mph, with gusts as high as 20 mph.

    Low: 36 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 61. Breezy, with a west southwest wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 34 mph.

    High: 61 °F

    Sunny then
    Slight Chance
    T-storms and
    Breezy

  • Tuesday Night

    Tuesday Night: A chance of rain showers before midnight, then a chance of rain and snow showers. Mostly cloudy, with a low around 37. Breezy. Chance of precipitation is 40%.

    Low: 37 °F

    Chance
    Showers and
    Breezy then
    Chance
    Rain/Snow

  • Wednesday

    Wednesday: A chance of rain and snow showers before noon, then rain showers likely. Some thunder is also possible. Snow level 6100 feet. Partly sunny, with a high near 50. Chance of precipitation is 60%.

    High: 50 °F

    Chance
    Rain/Snow
    then Showers
    Likely

Detailed Forecast

Today
Sunny, with a high near 54. South wind 5 to 8 mph becoming west northwest in the morning. Winds could gust as high as 20 mph.
Tonight
Mostly clear, with a low around 30. West northwest wind 5 to 8 mph becoming light and variable after midnight.
Sunday
Sunny, with a high near 59. Light and variable wind becoming southwest around 6 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 35. West southwest wind around 6 mph becoming light and variable.
Monday
Partly sunny, with a high near 61. Light and variable wind becoming southwest 5 to 8 mph in the afternoon. Winds could gust as high as 20 mph.
Monday Night
Partly cloudy, with a low around 36. South wind 5 to 8 mph, with gusts as high as 20 mph.
Tuesday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 61. Breezy, with a west southwest wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 34 mph.
Tuesday Night
A chance of rain showers before midnight, then a chance of rain and snow showers. Mostly cloudy, with a low around 37. Breezy. Chance of precipitation is 40%.
Wednesday
A chance of rain and snow showers before noon, then rain showers likely. Some thunder is also possible. Snow level 6100 feet. Partly sunny, with a high near 50. Chance of precipitation is 60%.
Wednesday Night
A chance of rain and snow showers. Snow level 6500 feet lowering to 5700 feet after midnight . Mostly cloudy, with a low around 30. Chance of precipitation is 50%.
Thursday
A chance of rain and snow showers. Snow level rising to 6600 feet in the afternoon. Partly sunny, with a high near 47.
Thursday Night
A chance of rain and snow showers. Snow level 6800 feet lowering to 5700 feet after midnight . Partly cloudy, with a low around 29.
Friday
A chance of rain and snow showers. Snow level rising to 6300 feet in the afternoon. Partly sunny, with a high near 49.
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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:
7:48 am MDT Apr 4, 2026
Forecast Valid:
8am MDT Apr 4, 2026-6pm MDT Apr 10, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation