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Hazardous Weather Conditions

Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

Lat: 44.977222°NLon: 110.695278°WElev: 6138.0ft.

NA

42°F

6°C

Humidity 67%
Wind Speed S 16 MPH
Barometer NA
Dewpoint 32°F (0°C)
Visibility NA
Wind Chill34°F (1°C)
Last update 15 Apr 02:15 PM 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

  • This Afternoon

    This Afternoon: Rain showers likely before 4pm, then rain, possibly mixed with snow showers. High near 50. Breezy, with a south southwest wind around 21 mph, with gusts as high as 39 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

    High: 50 °F

    Rain/Snow and
    Breezy

  • Tonight

    Tonight: Snow showers, possibly mixed with rain, becoming all snow after 2am. Some thunder is also possible. Snow level 7600 feet lowering to 5700 feet after midnight . Low around 30. Breezy, with a south southwest wind 10 to 20 mph becoming west northwest after midnight. Winds could gust as high as 38 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

    Low: 30 °F

    Rain/Snow and
    Breezy

  • Thursday

    Thursday: Snow showers. Some thunder is also possible. High near 38. Northwest wind around 10 mph, with gusts as high as 28 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. Cloudy, then gradually becoming partly cloudy, with a low around 18. West northwest wind 5 to 9 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 18 °F

    Snow Showers
    Likely then
    Slight Chance
    Snow Showers

  • Friday

    Friday: Snow showers likely, mainly after noon. Some thunder is also possible. Partly sunny, with a high near 39. Northwest wind 5 to 9 mph, with gusts as high as 22 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    High: 39 °F

    Chance 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 19. West northwest wind 5 to 9 mph becoming light and variable in the evening. Winds could gust as high as 22 mph.

    Low: 19 °F

    Slight Chance
    Snow Showers
    then Partly
    Cloudy

  • Saturday

    Saturday: Sunny, with a high near 49. Light south southwest wind becoming west southwest 5 to 10 mph in the morning. Winds could gust as high as 23 mph.

    High: 49 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 27.

    Low: 27 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 59.

    High: 59 °F

    Sunny

Detailed Forecast

This Afternoon
Rain showers likely before 4pm, then rain, possibly mixed with snow showers. High near 50. Breezy, with a south southwest wind around 21 mph, with gusts as high as 39 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Tonight
Snow showers, possibly mixed with rain, becoming all snow after 2am. Some thunder is also possible. Snow level 7600 feet lowering to 5700 feet after midnight . Low around 30. Breezy, with a south southwest wind 10 to 20 mph becoming west northwest after midnight. Winds could gust as high as 38 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.
Thursday
Snow showers. Some thunder is also possible. High near 38. Northwest wind around 10 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Thursday Night
Snow showers likely, mainly before midnight. Cloudy, then gradually becoming partly cloudy, with a low around 18. West northwest wind 5 to 9 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Friday
Snow showers likely, mainly after noon. Some thunder is also possible. Partly sunny, with a high near 39. Northwest wind 5 to 9 mph, with gusts as high as 22 mph. Chance of precipitation is 70%. 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 19. West northwest wind 5 to 9 mph becoming light and variable in the evening. Winds could gust as high as 22 mph.
Saturday
Sunny, with a high near 49. Light south southwest wind becoming west southwest 5 to 10 mph in the morning. Winds could gust as high as 23 mph.
Saturday Night
Mostly clear, with a low around 27.
Sunday
Sunny, with a high near 59.
Sunday Night
Partly cloudy, with a low around 35.
Monday
Sunny, with a high near 66.
Monday Night
Partly cloudy, with a low around 39.
Tuesday
A slight chance of showers and thunderstorms. Sunny, with a high near 68.
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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 pm MDT Apr 15, 2026
Forecast Valid:
3pm MDT Apr 15, 2026-6pm MDT Apr 21, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation