Extreme Heat Across the Southern U.S.; Severe Thunderstorms and Heavy Rain in the Northern Plains and Upper Midwest

Dangerous heat will remain across portions of the southern U.S. through the weekend. A heat wave over the Southwest will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Severe thunderstorms will produce damaging winds and heavy rainfall over portions of the northern/central Plains into the mid/upper-Mississippi Valleys today. Read More >

Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

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

NA

72°F

22°C

Humidity 44%
Wind Speed E 3 MPH
Barometer NA
Dewpoint 49°F (9°C)
Visibility NA
Last update 30 Jul 10:15 AM MDT
Extended Forecast for

Mammoth Hot Springs WY

  • Today

    Today: Isolated showers and thunderstorms after 2pm.  Areas of smoke. Sunny, with a high near 87. Light and variable wind becoming northwest 5 to 7 mph in the afternoon.  Chance of precipitation is 20%.

    High: 87 °F

    Areas Smoke
    then Isolated
    T-storms

  • Tonight

    Tonight: Areas of smoke. Partly cloudy, with a low around 56. West wind 5 to 10 mph becoming light and variable.

    Low: 56 °F

    Areas Smoke

  • Friday

    Friday: Areas of smoke. Mostly sunny, with a high near 89. Light and variable wind becoming west southwest 6 to 11 mph in the afternoon.

    High: 89 °F

    Areas Smoke

  • Friday Night

    Friday Night: Mostly clear, with a low around 57. West northwest wind 5 to 7 mph becoming light and variable.

    Low: 57 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 94. Southeast wind 5 to 13 mph becoming southwest in the afternoon. Winds could gust as high as 26 mph.

    High: 94 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 59. South southwest wind 5 to 11 mph, with gusts as high as 25 mph.

    Low: 59 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 92. Breezy, with a south southeast wind 5 to 10 mph becoming southwest 11 to 16 mph in the afternoon. Winds could gust as high as 32 mph.

    High: 92 °F

    Sunny then
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 54. Breezy.

    Low: 54 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Monday

    Monday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

Detailed Forecast

Today
Isolated showers and thunderstorms after 2pm. Areas of smoke. Sunny, with a high near 87. Light and variable wind becoming northwest 5 to 7 mph in the afternoon. Chance of precipitation is 20%.
Tonight
Areas of smoke. Partly cloudy, with a low around 56. West wind 5 to 10 mph becoming light and variable.
Friday
Areas of smoke. Mostly sunny, with a high near 89. Light and variable wind becoming west southwest 6 to 11 mph in the afternoon.
Friday Night
Mostly clear, with a low around 57. West northwest wind 5 to 7 mph becoming light and variable.
Saturday
Sunny, with a high near 94. Southeast wind 5 to 13 mph becoming southwest in the afternoon. Winds could gust as high as 26 mph.
Saturday Night
Mostly clear, with a low around 59. South southwest wind 5 to 11 mph, with gusts as high as 25 mph.
Sunday
Sunny, with a high near 92. Breezy, with a south southeast wind 5 to 10 mph becoming southwest 11 to 16 mph in the afternoon. Winds could gust as high as 32 mph.
Sunday Night
Mostly clear, with a low around 54. Breezy.
Monday
Sunny, with a high near 81.
Monday Night
Mostly clear, with a low around 49.
Tuesday
Sunny, with a high near 82.
Tuesday Night
Mostly clear, with a low around 51.
Wednesday
Sunny, with a high near 88.
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ABOUT THIS FORECAST

 
Point Forecast:
Mammoth Hot Springs WY
 44.98°N 110.69°W (Elev. 5745 ft)
9:01 am MDT Jul 30, 2026
10am MDT Jul 30, 2026-6pm MDT Aug 5, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database