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

45°F

7°C

Humidity 61%
Wind Speed S 14 MPH
Barometer NA
Dewpoint 32°F (0°C)
Visibility NA
Wind Chill39°F (4°C)
Last update 12 Apr 07:15 PM MDT
Extended Forecast for

Mammoth WY

  • Tonight

    Tonight: A slight chance of rain and snow showers before 9pm. Snow level 7500 feet lowering to 5700 feet after midnight . Mostly cloudy, with a low around 34. South southeast wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.

    Low: 34 °F

    Slight Chance
    Rain/Snow
    then Mostly
    Cloudy

  • Monday

    Monday: Scattered snow showers before 1pm, then rain and snow showers likely. Some thunder is also possible. Mostly cloudy, with a high near 47. Breezy, with a south southeast wind 10 to 16 mph becoming southwest in the afternoon. Winds could gust as high as 32 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 47 °F

    Scattered
    Snow Showers
    then
    Rain/Snow
    Likely and
    Breezy

  • Monday Night

    Monday Night: Scattered rain and snow showers before midnight. Snow level 6700 feet lowering to 6000 feet after midnight . Mostly cloudy, with a low around 34. South southwest wind 5 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

    Low: 34 °F

    Scattered
    Rain/Snow
    then Mostly
    Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 51. Southwest wind 5 to 14 mph, with gusts as high as 29 mph.

    High: 51 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 35. South southwest wind 10 to 14 mph, with gusts as high as 29 mph.

    Low: 35 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of rain and snow showers before noon, then rain showers likely. Snow level 5700 feet rising to 7000 feet in the afternoon. Mostly cloudy, with a high near 49. Breezy, with a south southwest wind 10 to 20 mph, with gusts as high as 38 mph. Chance of precipitation is 70%.

    High: 49 °F

    Breezy.
    Chance
    Rain/Snow
    then Showers
    Likely

  • Wednesday Night

    Wednesday Night: Rain showers before 3am, then rain and snow showers. Some thunder is also possible. Snow level 7200 feet lowering to 6300 feet after midnight . Low around 33. Breezy, with a south southwest wind 14 to 18 mph, with gusts as high as 34 mph. Chance of precipitation is 90%.

    Low: 33 °F

    Showers and
    Breezy then
    Rain/Snow

  • Thursday

    Thursday: Snow showers. High near 40. Chance of precipitation is 90%.

    High: 40 °F

    Snow Showers

  • Thursday Night

    Thursday Night: Snow showers likely, mainly before midnight. Mostly cloudy, with a low around 21. Chance of precipitation is 70%.

    Low: 21 °F

    Snow Showers
    Likely then
    Chance Snow
    Showers

Detailed Forecast

Tonight
A slight chance of rain and snow showers before 9pm. Snow level 7500 feet lowering to 5700 feet after midnight . Mostly cloudy, with a low around 34. South southeast wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.
Monday
Scattered snow showers before 1pm, then rain and snow showers likely. Some thunder is also possible. Mostly cloudy, with a high near 47. Breezy, with a south southeast wind 10 to 16 mph becoming southwest in the afternoon. Winds could gust as high as 32 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Monday Night
Scattered rain and snow showers before midnight. Snow level 6700 feet lowering to 6000 feet after midnight . Mostly cloudy, with a low around 34. South southwest wind 5 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Tuesday
Mostly sunny, with a high near 51. Southwest wind 5 to 14 mph, with gusts as high as 29 mph.
Tuesday Night
Partly cloudy, with a low around 35. South southwest wind 10 to 14 mph, with gusts as high as 29 mph.
Wednesday
A chance of rain and snow showers before noon, then rain showers likely. Snow level 5700 feet rising to 7000 feet in the afternoon. Mostly cloudy, with a high near 49. Breezy, with a south southwest wind 10 to 20 mph, with gusts as high as 38 mph. Chance of precipitation is 70%.
Wednesday Night
Rain showers before 3am, then rain and snow showers. Some thunder is also possible. Snow level 7200 feet lowering to 6300 feet after midnight . Low around 33. Breezy, with a south southwest wind 14 to 18 mph, with gusts as high as 34 mph. Chance of precipitation is 90%.
Thursday
Snow showers. High near 40. Chance of precipitation is 90%.
Thursday Night
Snow showers likely, mainly before midnight. Mostly cloudy, with a low around 21. Chance of precipitation is 70%.
Friday
A 40 percent chance of snow showers. Partly sunny, with a high near 40.
Friday Night
A slight chance of snow showers. Partly cloudy, with a low around 19.
Saturday
Mostly sunny, with a high near 47.
Saturday Night
Partly cloudy, with a low around 26.
Sunday
Mostly sunny, with a high near 54.
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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 pm MDT Apr 12, 2026
Forecast Valid:
8pm MDT Apr 12, 2026-6pm MDT Apr 19, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation