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

Hazardous Weather Conditions

Current conditions at

MAMMOTH AT YELLOWSTONE NP (YLAW4)

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

NA

75°F

24°C

Humidity 25%
Wind Speed SSW 7 MPH
Barometer NA
Dewpoint 37°F (3°C)
Visibility NA
Last update 14 Jul 06:15 PM MDT
Extended Forecast for

Mammoth WY

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 7pm. Mostly cloudy, with a low around 53. Southwest wind 5 to 9 mph becoming light south southwest after midnight.

    Low: 53 °F

    Chance
    T-storms then
    Partly Cloudy

  • Tuesday

    Tuesday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm. High near 79. Light and variable wind becoming west northwest 5 to 9 mph in the morning. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 79 °F

    Slight Chance
    T-storms then
    Showers

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm before midnight, then a chance of showers and thunderstorms between midnight and 3am, then a chance of showers after 3am. Low around 50. North northwest wind 6 to 8 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 50 °F

    Showers then
    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after noon. Mostly cloudy, then gradually becoming sunny, with a high near 76. Northwest wind 5 to 8 mph. Chance of precipitation is 30%.

    High: 76 °F

    Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 48. Northwest wind 5 to 8 mph becoming southeast after midnight.

    Low: 48 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 85. South southeast wind 6 to 11 mph becoming west southwest in the afternoon. Winds could gust as high as 24 mph.

    High: 85 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 51. South wind 5 to 9 mph.

    Low: 51 °F

    Mostly Clear

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after noon. Sunny, with a high near 86.

    High: 86 °F

    Sunny then
    Slight Chance
    T-storms

  • Friday Night

    Friday Night: Partly cloudy, with a low around 52.

    Low: 52 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 30 percent chance of showers and thunderstorms, mainly before 7pm. Mostly cloudy, with a low around 53. Southwest wind 5 to 9 mph becoming light south southwest after midnight.
Tuesday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm. High near 79. Light and variable wind becoming west northwest 5 to 9 mph in the morning. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Showers and possibly a thunderstorm before midnight, then a chance of showers and thunderstorms between midnight and 3am, then a chance of showers after 3am. Low around 50. North northwest wind 6 to 8 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
A chance of showers, with thunderstorms also possible after noon. Mostly cloudy, then gradually becoming sunny, with a high near 76. Northwest wind 5 to 8 mph. Chance of precipitation is 30%.
Wednesday Night
Mostly clear, with a low around 48. Northwest wind 5 to 8 mph becoming southeast after midnight.
Thursday
Sunny, with a high near 85. South southeast wind 6 to 11 mph becoming west southwest in the afternoon. Winds could gust as high as 24 mph.
Thursday Night
Mostly clear, with a low around 51. South wind 5 to 9 mph.
Friday
A 20 percent chance of showers and thunderstorms after noon. Sunny, with a high near 86.
Friday Night
Partly cloudy, with a low around 52.
Saturday
A 10 percent chance of showers and thunderstorms after noon. Sunny, with a high near 86.
Saturday Night
Partly cloudy, with a low around 52.
Sunday
A slight chance of showers and thunderstorms. Sunny, with a high near 86.
Sunday Night
Partly cloudy, with a low around 53.
Monday
Mostly sunny, with a high near 83.
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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:
5:28 pm MDT Jul 14, 2025
Forecast Valid:
6pm MDT Jul 14, 2025-6pm MDT Jul 21, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation