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

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 76%
Wind Speed SW 1 MPH
Barometer NA
Dewpoint 15°F (-9°C)
Visibility NA
Last update 18 Apr 02:15 AM MDT
Extended Forecast for

Mammoth WY

  • Overnight

    Overnight: Mostly clear, with a low around 20. South wind 3 to 6 mph.

    Low: 20 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 50. Breezy, with a southwest wind 6 to 16 mph, with gusts as high as 24 mph.

    High: 50 °F

    Sunny then
    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 27. Breezy, with a southwest wind 6 to 15 mph becoming southeast in the evening. Winds could gust as high as 23 mph.

    Low: 27 °F

    Partly Cloudy
    and Breezy
    then Mostly
    Clear

  • Sunday

    Sunday: Sunny, with a high near 59. South southeast wind 5 to 7 mph.

    High: 59 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 36. South wind around 7 mph.

    Low: 36 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 67. South southeast wind 5 to 8 mph becoming west southwest in the afternoon. Winds could gust as high as 20 mph.

    High: 67 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 39. Southwest wind 6 to 8 mph becoming southeast after midnight. Winds could gust as high as 20 mph.

    Low: 39 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 69.

    High: 69 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 20. South wind 3 to 6 mph.
Saturday
Sunny, with a high near 50. Breezy, with a southwest wind 6 to 16 mph, with gusts as high as 24 mph.
Saturday Night
Partly cloudy, with a low around 27. Breezy, with a southwest wind 6 to 15 mph becoming southeast in the evening. Winds could gust as high as 23 mph.
Sunday
Sunny, with a high near 59. South southeast wind 5 to 7 mph.
Sunday Night
Partly cloudy, with a low around 36. South wind around 7 mph.
Monday
Sunny, with a high near 67. South southeast wind 5 to 8 mph becoming west southwest in the afternoon. Winds could gust as high as 20 mph.
Monday Night
Partly cloudy, with a low around 39. Southwest wind 6 to 8 mph becoming southeast after midnight. Winds could gust as high as 20 mph.
Tuesday
Sunny, with a high near 69.
Tuesday Night
Partly cloudy, with a low around 42.
Wednesday
A 50 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 59.
Wednesday Night
Rain and snow showers likely. Snow level 7700 feet lowering to 6500 feet after midnight . Mostly cloudy, with a low around 36.
Thursday
Rain and snow showers. Mostly cloudy, with a high near 47.
Thursday Night
A chance of snow showers. Mostly cloudy, with a low around 27.
Friday
A chance of snow showers. Partly sunny, with a high near 49.
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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:
2:48 am MDT Apr 18, 2026
Forecast Valid:
3am MDT Apr 18, 2026-6pm MDT Apr 24, 2026
 
Forecast Discussion
 
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Additional Resources

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