Areas of Excessive Rainfall and Severe Thunderstorms; Fire Weather Concerns in the Northern Plains and Four Corners Region

Widespread showers and thunderstorms may bring areas of flash flooding across much of the Southern Plains into the Gulf Coast region and the upper Ohio River Valley into the Mid-Atlantic. A large Pacific storm will bring widespread rain, gusty winds, and mountain snow to California and the Great Basin. Fire weather concerns expected in the Northern Plains and the Four Corners region. Read More >

Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

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

NA

46°F

8°C

Humidity 82%
Wind Speed SW 2 MPH
Barometer NA
Dewpoint 41°F (5°C)
Visibility NA
Last update 27 May 05:15 AM MDT
Extended Forecast for

Mammoth WY

  • Today

    Today: A 30 percent chance of showers and thunderstorms, mainly between 3pm and 5pm.  Mostly sunny, with a high near 81. Calm wind becoming south southwest 5 to 7 mph in the afternoon.

    High: 81 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tonight

    Tonight: A 10 percent chance of showers and thunderstorms before 7pm.  Partly cloudy, with a low around 49. South southeast wind 3 to 6 mph.

    Low: 49 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 85. East southeast wind 3 to 8 mph. Winds could gust as high as 20 mph.

    High: 85 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 50. South wind 5 to 8 mph becoming light and variable  in the evening. Winds could gust as high as 20 mph.

    Low: 50 °F

    Partly Cloudy

  • Friday

    Friday: A slight chance of showers between noon and 3pm, then a slight chance of showers and thunderstorms after 3pm.  Mostly sunny, with a high near 82. South wind 3 to 8 mph. Winds could gust as high as 20 mph.  Chance of precipitation is 20%.

    High: 82 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight, then a chance of showers and thunderstorms after midnight.  Mostly cloudy, with a low around 48. South wind 3 to 7 mph.  Chance of precipitation is 40%.

    Low: 48 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Saturday

    Saturday: Showers and possibly a thunderstorm.  High near 63. South southwest wind 3 to 7 mph.  Chance of precipitation is 90%.

    High: 63 °F

    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm before midnight, then showers likely.  Low around 44. Chance of precipitation is 80%.

    Low: 44 °F

    Showers

  • Sunday

    Sunday: Showers likely, with thunderstorms also possible after noon.  Partly sunny, with a high near 65. Chance of precipitation is 60%.

    High: 65 °F

    Showers
    Likely

Detailed Forecast

Today
A 30 percent chance of showers and thunderstorms, mainly between 3pm and 5pm. Mostly sunny, with a high near 81. Calm wind becoming south southwest 5 to 7 mph in the afternoon.
Tonight
A 10 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 49. South southeast wind 3 to 6 mph.
Thursday
Mostly sunny, with a high near 85. East southeast wind 3 to 8 mph. Winds could gust as high as 20 mph.
Thursday Night
Partly cloudy, with a low around 50. South wind 5 to 8 mph becoming light and variable in the evening. Winds could gust as high as 20 mph.
Friday
A slight chance of showers between noon and 3pm, then a slight chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 82. South wind 3 to 8 mph. Winds could gust as high as 20 mph. Chance of precipitation is 20%.
Friday Night
A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight, then a chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 48. South wind 3 to 7 mph. Chance of precipitation is 40%.
Saturday
Showers and possibly a thunderstorm. High near 63. South southwest wind 3 to 7 mph. Chance of precipitation is 90%.
Saturday Night
Showers and possibly a thunderstorm before midnight, then showers likely. Low around 44. Chance of precipitation is 80%.
Sunday
Showers likely, with thunderstorms also possible after noon. Partly sunny, with a high near 65. Chance of precipitation is 60%.
Sunday Night
A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 41.
Monday
A chance of showers and thunderstorms. Mostly sunny, with a high near 69.
Monday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 42.
Tuesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 74.
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ABOUT THIS FORECAST

 
Point Forecast:
Mammoth WY
 44.98°N 110.69°W (Elev. 5745 ft)
3:47 am MDT May 27, 2026
5am MDT May 27, 2026-6pm MDT Jun 2, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

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