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

67°F

19°C

Humidity 31%
Wind Speed SSW 8 MPH
Barometer NA
Dewpoint 35°F (2°C)
Visibility NA
Last update 03 Oct 01:15 PM MDT
Extended Forecast for

Mammoth WY

  • This Afternoon

    This Afternoon: Isolated showers after 4pm. Mostly sunny, with a high near 71. Breezy, with a south southwest wind 10 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.

    High: 71 °F

    Isolated
    Showers and
    Breezy

  • Tonight

    Tonight: Scattered showers and thunderstorms, mainly after 1am. Increasing clouds, with a low around 43. South southwest wind 5 to 11 mph becoming northwest in the evening. Winds could gust as high as 21 mph. Chance of precipitation is 40%.

    Low: 43 °F

    Scattered
    Showers

  • Saturday

    Saturday: Scattered showers and thunderstorms, then showers and possibly a thunderstorm after 9am. High near 51. Breezy, with a northwest wind 6 to 11 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 51 °F

    Showers and
    Breezy

  • Saturday Night

    Saturday Night: Showers. Low around 36. Northwest wind 6 to 8 mph. Chance of precipitation is 80%.

    Low: 36 °F

    Showers

  • Sunday

    Sunday: Rain showers before 8am, then rain and snow showers between 8am and noon, then rain showers likely after noon. Some thunder is also possible. Snow level 6500 feet. High near 47. North wind around 7 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

    High: 47 °F

    Rain/Snow
    then Showers
    Likely

  • Sunday Night

    Sunday Night: A chance of rain showers, mixing with snow after 7pm, then gradually ending. Snow level 6300 feet lowering to 5700 feet after midnight . Mostly cloudy, with a low around 26. North wind around 6 mph becoming light and variable after midnight. Chance of precipitation is 30%.

    Low: 26 °F

    Chance
    Rain/Snow
    then Mostly
    Cloudy

  • Monday

    Monday: Sunny, with a high near 54. Light and variable wind.

    High: 54 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 29.

    Low: 29 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 62.

    High: 62 °F

    Sunny

Detailed Forecast

This Afternoon
Isolated showers after 4pm. Mostly sunny, with a high near 71. Breezy, with a south southwest wind 10 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.
Tonight
Scattered showers and thunderstorms, mainly after 1am. Increasing clouds, with a low around 43. South southwest wind 5 to 11 mph becoming northwest in the evening. Winds could gust as high as 21 mph. Chance of precipitation is 40%.
Saturday
Scattered showers and thunderstorms, then showers and possibly a thunderstorm after 9am. High near 51. Breezy, with a northwest wind 6 to 11 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
Showers. Low around 36. Northwest wind 6 to 8 mph. Chance of precipitation is 80%.
Sunday
Rain showers before 8am, then rain and snow showers between 8am and noon, then rain showers likely after noon. Some thunder is also possible. Snow level 6500 feet. High near 47. North wind around 7 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Sunday Night
A chance of rain showers, mixing with snow after 7pm, then gradually ending. Snow level 6300 feet lowering to 5700 feet after midnight . Mostly cloudy, with a low around 26. North wind around 6 mph becoming light and variable after midnight. Chance of precipitation is 30%.
Monday
Sunny, with a high near 54. Light and variable wind.
Monday Night
Clear, with a low around 29.
Tuesday
Sunny, with a high near 62.
Tuesday Night
Clear, with a low around 33.
Wednesday
Sunny, with a high near 63.
Wednesday Night
Mostly clear, with a low around 35.
Thursday
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:
1:03 pm MDT Oct 3, 2025
Forecast Valid:
2pm MDT Oct 3, 2025-6pm MDT Oct 9, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation