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

39°F

4°C

Humidity 52%
Wind Speed SSE 7 MPH
Barometer NA
Dewpoint 22°F (-6°C)
Visibility NA
Wind Chill34°F (1°C)
Last update 15 Apr 03:15 AM MDT
Extended Forecast for

Mammoth WY

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

  • Today

    Today: Rain showers likely before 2pm, then rain likely, possibly mixed with snow showers between 2pm and 3pm, then rain showers after 3pm. Snow level rising to 7400 feet in the afternoon. High near 50. Breezy, with a south southwest wind 10 to 15 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 37 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

    High: 50 °F

    Breezy.
    Scattered
    Showers then
    Rain/Snow

  • Tonight

    Tonight: Rain and snow showers, becoming all snow after 2am. Some thunder is also possible. Snow level 7500 feet lowering to 5700 feet after midnight . Low around 31. Breezy, with a south southwest wind 15 to 20 mph becoming west 7 to 12 mph after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    Low: 31 °F

    Rain/Snow and
    Breezy

  • Thursday

    Thursday: Snow showers. Some thunder is also possible. High near 38. West northwest wind around 10 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    High: 38 °F

    Snow Showers

  • Thursday Night

    Thursday Night: Snow showers likely, mainly before midnight. Mostly cloudy, with a low around 18. Northwest wind 5 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    Low: 18 °F

    Snow Showers
    Likely then
    Isolated Snow
    Showers

  • Friday

    Friday: Snow showers likely, mainly after noon. Some thunder is also possible. Partly sunny, with a high near 39. North northwest wind 5 to 10 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 39 °F

    Scattered
    Snow Showers
    then Snow
    Showers
    Likely

  • Friday Night

    Friday Night: A 20 percent chance of snow showers before midnight. Partly cloudy, with a low around 18. North northwest wind 5 to 10 mph becoming light and variable. Winds could gust as high as 22 mph.

    Low: 18 °F

    Slight Chance
    Snow Showers
    then Partly
    Cloudy

  • Saturday

    Saturday: Sunny, with a high near 47. South southwest wind 5 to 10 mph, with gusts as high as 24 mph.

    High: 47 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 25.

    Low: 25 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 57.

    High: 57 °F

    Sunny

Detailed Forecast

Today
Rain showers likely before 2pm, then rain likely, possibly mixed with snow showers between 2pm and 3pm, then rain showers after 3pm. Snow level rising to 7400 feet in the afternoon. High near 50. Breezy, with a south southwest wind 10 to 15 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 37 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Tonight
Rain and snow showers, becoming all snow after 2am. Some thunder is also possible. Snow level 7500 feet lowering to 5700 feet after midnight . Low around 31. Breezy, with a south southwest wind 15 to 20 mph becoming west 7 to 12 mph after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Thursday
Snow showers. Some thunder is also possible. High near 38. West northwest wind around 10 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Thursday Night
Snow showers likely, mainly before midnight. Mostly cloudy, with a low around 18. Northwest wind 5 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Friday
Snow showers likely, mainly after noon. Some thunder is also possible. Partly sunny, with a high near 39. North northwest wind 5 to 10 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Friday Night
A 20 percent chance of snow showers before midnight. Partly cloudy, with a low around 18. North northwest wind 5 to 10 mph becoming light and variable. Winds could gust as high as 22 mph.
Saturday
Sunny, with a high near 47. South southwest wind 5 to 10 mph, with gusts as high as 24 mph.
Saturday Night
Partly cloudy, with a low around 25.
Sunday
Sunny, with a high near 57.
Sunday Night
Partly cloudy, with a low around 34.
Monday
Sunny, with a high near 63.
Monday Night
Partly cloudy, with a low around 38.
Tuesday
A chance of rain and snow showers. Some thunder is also possible. Sunny, with a high near 65.
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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:
2:48 am MDT Apr 15, 2026
Forecast Valid:
4am MDT Apr 15, 2026-6pm MDT Apr 21, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation