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

46°F

8°C

Humidity 30%
Wind Speed SSE 6 MPH
Barometer NA
Dewpoint 16°F (-9°C)
Visibility NA
Wind Chill43°F (6°C)
Last update 14 Dec 01:15 PM MST
Extended Forecast for

Mammoth WY

  • This Afternoon

    This Afternoon: Sunny, with a high near 43. South southeast wind 7 to 11 mph, with gusts as high as 25 mph.

    High: 43 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 26. South southeast wind 9 to 13 mph.

    Low: 26 °F

    Mostly Clear

  • Monday

    Monday: Increasing clouds, with a high near 44. Breezy, with a south southwest wind 9 to 17 mph, with gusts as high as 29 mph.

    High: 44 °F

    Increasing
    Clouds and
    Breezy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 32. Breezy, with a south southwest wind 10 to 15 mph, with gusts as high as 22 mph.

    Low: 32 °F

    Mostly Cloudy
    and Breezy
    then Mostly
    Cloudy

  • Tuesday

    Tuesday: A slight chance of rain and snow showers before 11am. Snow level 5900 feet rising to 6800 feet in the afternoon. Partly sunny, with a high near 44. Southwest wind 10 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.

    High: 44 °F

    Slight Chance
    Rain/Snow
    then Partly
    Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers after 11pm. Mostly cloudy, with a low around 37. Breezy, with a south southwest wind 14 to 18 mph, with gusts as high as 32 mph.

    Low: 37 °F

    Chance
    Showers and
    Breezy

  • Wednesday

    Wednesday: Rain and snow showers. Snow level 7200 feet lowering to 5700 feet in the afternoon . High near 44. Breezy, with a southwest wind 18 to 24 mph, with gusts as high as 43 mph. Chance of precipitation is 100%.

    High: 44 °F

    Rain/Snow and
    Breezy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 18. Breezy.

    Low: 18 °F

    Mostly Cloudy
    and Breezy
    then Mostly
    Cloudy

  • Thursday

    Thursday: A 50 percent chance of snow showers, mainly after 11am. Mostly cloudy, with a high near 37.

    High: 37 °F

    Chance Snow
    Showers

Detailed Forecast

This Afternoon
Sunny, with a high near 43. South southeast wind 7 to 11 mph, with gusts as high as 25 mph.
Tonight
Mostly clear, with a low around 26. South southeast wind 9 to 13 mph.
Monday
Increasing clouds, with a high near 44. Breezy, with a south southwest wind 9 to 17 mph, with gusts as high as 29 mph.
Monday Night
Mostly cloudy, with a low around 32. Breezy, with a south southwest wind 10 to 15 mph, with gusts as high as 22 mph.
Tuesday
A slight chance of rain and snow showers before 11am. Snow level 5900 feet rising to 6800 feet in the afternoon. Partly sunny, with a high near 44. Southwest wind 10 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.
Tuesday Night
A 30 percent chance of showers after 11pm. Mostly cloudy, with a low around 37. Breezy, with a south southwest wind 14 to 18 mph, with gusts as high as 32 mph.
Wednesday
Rain and snow showers. Snow level 7200 feet lowering to 5700 feet in the afternoon . High near 44. Breezy, with a southwest wind 18 to 24 mph, with gusts as high as 43 mph. Chance of precipitation is 100%.
Wednesday Night
Mostly cloudy, with a low around 18. Breezy.
Thursday
A 50 percent chance of snow showers, mainly after 11am. Mostly cloudy, with a high near 37.
Thursday Night
Snow showers likely before 11pm, then rain likely, possibly mixed with snow showers. Mostly cloudy, with a low around 30. Breezy. Chance of precipitation is 70%.
Friday
Rain and snow showers likely. Snow level 6400 feet. Mostly cloudy, with a high near 43. Breezy.
Friday Night
Rain and snow showers likely. Mostly cloudy, with a low around 26. Breezy.
Saturday
A chance of snow showers. Mostly sunny, with a high near 36.
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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:
11:33 am MST Dec 14, 2025
Forecast Valid:
1pm MST Dec 14, 2025-6pm MST Dec 20, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation