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

38°F

3°C

Humidity 62%
Wind Speed SE 1 MPH
Barometer NA
Dewpoint 26°F (-3°C)
Visibility NA
Last update 14 Apr 09:15 AM MDT
Extended Forecast for

Mammoth WY

Winter Storm Watch April 15, 06:00pm until April 17, 06:00am
Click here for hazard details and duration
Winter Storm Watch

  • Today

    Today: Mostly sunny, with a high near 52. Breezy, with a south southwest wind 6 to 15 mph, with gusts as high as 31 mph.

    High: 52 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

  • Tonight

    Tonight: Partly cloudy, with a low around 34. Breezy, with a south wind 9 to 16 mph, with gusts as high as 33 mph.

    Low: 34 °F

    Partly Cloudy
    and Breezy
    then Mostly
    Cloudy

  • Wednesday

    Wednesday: Scattered snow showers before 9am, then rain showers likely between 9am and 3pm, then rain likely, possibly mixed with snow showers after 3pm. Snow level rising to 7300 feet in the afternoon. Partly sunny, with a high near 49. Breezy, with a south southwest wind 9 to 14 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 40 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.

    High: 49 °F

    Breezy.
    Scattered
    Rain/Snow
    then
    Rain/Snow
    Likely

  • Wednesday Night

    Wednesday Night: Rain, possibly mixed with snow showers, becoming all snow after 3am. Some thunder is also possible. Snow level 7400 feet lowering to 5700 feet after midnight . Low around 33. Breezy, with a south southwest wind 13 to 21 mph, with gusts as high as 40 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

    Low: 33 °F

    Rain/Snow and
    Breezy

  • Thursday

    Thursday: Snow showers. Some thunder is also possible. High near 40. West southwest wind around 10 mph becoming northwest in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

    High: 40 °F

    Snow Showers

  • Thursday Night

    Thursday Night: Snow showers likely, mainly before midnight. Mostly cloudy, with a low around 21. North northwest wind 6 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 70%.

    Low: 21 °F

    Snow Showers
    Likely then
    Scattered
    Snow Showers

  • Friday

    Friday: Snow showers likely, mainly after noon. Partly sunny, with a high near 39. North northwest wind 6 to 10 mph, with gusts as high as 23 mph. Chance of precipitation is 60%.

    High: 39 °F

    Scattered
    Snow Showers
    then Snow
    Showers
    Likely

  • Friday Night

    Friday Night: A 20 percent chance of snow showers before midnight. Mostly cloudy, with a low around 20.

    Low: 20 °F

    Slight Chance
    Snow Showers
    then Partly
    Cloudy

  • Saturday

    Saturday: Sunny, with a high near 48.

    High: 48 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 52. Breezy, with a south southwest wind 6 to 15 mph, with gusts as high as 31 mph.
Tonight
Partly cloudy, with a low around 34. Breezy, with a south wind 9 to 16 mph, with gusts as high as 33 mph.
Wednesday
Scattered snow showers before 9am, then rain showers likely between 9am and 3pm, then rain likely, possibly mixed with snow showers after 3pm. Snow level rising to 7300 feet in the afternoon. Partly sunny, with a high near 49. Breezy, with a south southwest wind 9 to 14 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 40 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Wednesday Night
Rain, possibly mixed with snow showers, becoming all snow after 3am. Some thunder is also possible. Snow level 7400 feet lowering to 5700 feet after midnight . Low around 33. Breezy, with a south southwest wind 13 to 21 mph, with gusts as high as 40 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.
Thursday
Snow showers. Some thunder is also possible. High near 40. West southwest wind around 10 mph becoming northwest in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.
Thursday Night
Snow showers likely, mainly before midnight. Mostly cloudy, with a low around 21. North northwest wind 6 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 70%.
Friday
Snow showers likely, mainly after noon. Partly sunny, with a high near 39. North northwest wind 6 to 10 mph, with gusts as high as 23 mph. Chance of precipitation is 60%.
Friday Night
A 20 percent chance of snow showers before midnight. Mostly cloudy, with a low around 20.
Saturday
Sunny, with a high near 48.
Saturday Night
Partly cloudy, with a low around 27.
Sunday
Sunny, with a high near 58.
Sunday Night
Partly cloudy, with a low around 34.
Monday
A slight chance of showers. Mostly sunny, with a high near 62.
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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:
8:48 am MDT Apr 14, 2026
Forecast Valid:
10am MDT Apr 14, 2026-6pm MDT Apr 20, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation