National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

MAMMOTH AT YELLOWSTONE NP (YLAW4)

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

NA

22°C

71°F

Humidity 30%
Wind Speed ENE 5 MPH
Barometer NA
Dewpoint 3°C (38°F)
Visibility NA
Last update 13 Jul 10:15 AM MDT
Extended Forecast for

Mammoth WY

  • Today

    Today: Sunny, with a high near 31. Light and variable wind becoming west northwest 9 to 14 km/h in the afternoon.

    High: 31 °C

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 13. Northwest wind 5 to 14 km/h becoming south southwest after midnight.

    Low: 13 °C

    Partly Cloudy

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after noon. Sunny, with a high near 32. Light south wind becoming west southwest 9 to 14 km/h in the morning.

    High: 32 °C

    Sunny then
    Slight Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before midnight, then a slight chance of showers. Partly cloudy, with a low around 12. West wind 10 to 13 km/h becoming north northeast after midnight. Chance of precipitation is 40%.

    Low: 12 °C

    Chance
    T-storms then
    Slight Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers before noon, then showers likely and possibly a thunderstorm between noon and 3pm, then showers and thunderstorms likely after 3pm. Partly sunny, with a high near 23. North wind 10 to 14 km/h. Chance of precipitation is 70%.

    High: 23 °C

    Chance
    Showers then
    T-storms
    Likely

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 8. North northeast wind 10 to 13 km/h.

    Low: 8 °C

    Chance
    T-storms then
    Chance
    Showers

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms, mainly after noon. Mostly sunny, with a high near 26. North wind 8 to 13 km/h becoming west northwest in the afternoon.

    High: 26 °C

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 10 percent chance of showers and thunderstorms before midnight. Mostly clear, with a low around 9.

    Low: 9 °C

    Slight Chance
    T-storms then
    Mostly Clear

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after noon. Sunny, with a high near 29.

    High: 29 °C

    Sunny then
    Slight Chance
    T-storms

Detailed Forecast

Today
Sunny, with a high near 31. Light and variable wind becoming west northwest 9 to 14 km/h in the afternoon.
Tonight
Partly cloudy, with a low around 13. Northwest wind 5 to 14 km/h becoming south southwest after midnight.
Monday
A 20 percent chance of showers and thunderstorms after noon. Sunny, with a high near 32. Light south wind becoming west southwest 9 to 14 km/h in the morning.
Monday Night
A chance of showers and thunderstorms before midnight, then a slight chance of showers. Partly cloudy, with a low around 12. West wind 10 to 13 km/h becoming north northeast after midnight. Chance of precipitation is 40%.
Tuesday
A chance of showers before noon, then showers likely and possibly a thunderstorm between noon and 3pm, then showers and thunderstorms likely after 3pm. Partly sunny, with a high near 23. North wind 10 to 14 km/h. Chance of precipitation is 70%.
Tuesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 8. North northeast wind 10 to 13 km/h.
Wednesday
A 30 percent chance of showers and thunderstorms, mainly after noon. Mostly sunny, with a high near 26. North wind 8 to 13 km/h becoming west northwest in the afternoon.
Wednesday Night
A 10 percent chance of showers and thunderstorms before midnight. Mostly clear, with a low around 9.
Thursday
A 20 percent chance of showers and thunderstorms after noon. Sunny, with a high near 29.
Thursday Night
A 10 percent chance of showers and thunderstorms before midnight. Mostly clear, with a low around 11.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 29.
Friday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 11.
Saturday
A slight chance of showers and thunderstorms. Sunny, with a high near 31.
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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 m)
Last Update:
9:27 am MDT Jul 13, 2025
Forecast Valid:
10am MDT Jul 13, 2025-6pm MDT Jul 19, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation