Heavy Rain From the Central Plains to the Mid-Atlantic; Heat Wave Begins This Weekend

Strong to severe thunderstorms and heavy rain will impact portions of the central Plains into the Upper Midwest and the Mid-Atlantic through the weekend. A stretch of unusually hot and humid weather is expected across portions of the central U.S. and the Southeast beginning this weekend and continuing through next week. The heat may reach dangerous levels, particularly mid to late next week. Read More >

Hazardous Weather Conditions

Current conditions at

MAMMOTH AT YELLOWSTONE NP (YLAW4)

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

NA

64°F

18°C

Humidity 50%
Wind Speed SSW 9 MPH
Barometer NA
Dewpoint 45°F (7°C)
Visibility NA
Last update 18 Jul 09:15 PM MDT
Extended Forecast for

Mammoth WY

  • Tonight

    Tonight: Isolated showers and thunderstorms before 10pm.  Partly cloudy, with a low around 51. South southeast wind around 9 mph.  Chance of precipitation is 10%.

    Low: 51 °F

    Isolated
    T-storms then
    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 83. Breezy, with a south wind 7 to 16 mph becoming west southwest in the afternoon. Winds could gust as high as 29 mph.

    High: 83 °F

    Sunny then
    Mostly Sunny
    and Breezy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 51. Breezy, with a west southwest wind 6 to 15 mph becoming south after midnight. Winds could gust as high as 26 mph.

    Low: 51 °F

    Partly Cloudy
    and Breezy
    then Mostly
    Clear

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 84. Breezy, with a south wind 6 to 15 mph becoming west southwest in the afternoon. Winds could gust as high as 26 mph.

    High: 84 °F

    Sunny then
    Slight Chance
    T-storms and
    Breezy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 52. West southwest wind 5 to 10 mph becoming south southeast after midnight. Winds could gust as high as 22 mph.

    Low: 52 °F

    Partly Cloudy

  • Monday

    Monday: 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 85. Breezy, with a south southeast wind 5 to 10 mph becoming west southwest 11 to 16 mph in the afternoon. Winds could gust as high as 29 mph.  Chance of precipitation is 20%.

    High: 85 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms and
    Breezy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 51. West southwest wind 6 to 13 mph becoming south after midnight. Winds could gust as high as 23 mph.

    Low: 51 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 10 percent chance of showers and thunderstorms before midnight.  Partly cloudy, with a low around 51.

    Low: 51 °F

    Slight Chance
    T-storms then
    Mostly Clear

Detailed Forecast

Tonight
Isolated showers and thunderstorms before 10pm. Partly cloudy, with a low around 51. South southeast wind around 9 mph. Chance of precipitation is 10%.
Saturday
Mostly sunny, with a high near 83. Breezy, with a south wind 7 to 16 mph becoming west southwest in the afternoon. Winds could gust as high as 29 mph.
Saturday Night
Partly cloudy, with a low around 51. Breezy, with a west southwest wind 6 to 15 mph becoming south after midnight. Winds could gust as high as 26 mph.
Sunday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 84. Breezy, with a south wind 6 to 15 mph becoming west southwest in the afternoon. Winds could gust as high as 26 mph.
Sunday Night
Partly cloudy, with a low around 52. West southwest wind 5 to 10 mph becoming south southeast after midnight. Winds could gust as high as 22 mph.
Monday
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 85. Breezy, with a south southeast wind 5 to 10 mph becoming west southwest 11 to 16 mph in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 20%.
Monday Night
Partly cloudy, with a low around 51. West southwest wind 6 to 13 mph becoming south after midnight. Winds could gust as high as 23 mph.
Tuesday
A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 83.
Tuesday Night
A 10 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 51.
Wednesday
A 20 percent chance of showers and thunderstorms after noon. Sunny, with a high near 85.
Wednesday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 52.
Thursday
A slight chance of showers and thunderstorms. Sunny, with a high near 86.
Thursday Night
Partly cloudy, with a low around 53.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 87.
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ABOUT THIS FORECAST

 
Point Forecast:
Mammoth WY
 44.98°N 110.69°W (Elev. 5745 ft)
7:58 pm MDT Jul 18, 2025
9pm MDT Jul 18, 2025-6pm MDT Jul 25, 2025
 
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