Dangerous Heat in the Central and Eastern U.S.; Severe Thunderstorms in the Plains to the Upper Midwest

A significant and dangerous heat wave will expand from the Central U.S. into the Eastern U.S and linger through much of the work week. Numerous daily record highs and warm lows are likely. Severe thunderstorms are possible from the southern Plains through the Upper Mississippi Valley. Fire weather concerns are expected to persist across the Four Corners region. Read More >

Hazardous Weather Conditions

Current conditions at

MAMMOTH AT YELLOWSTONE NP (YLAW4)

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

NA

43°F

6°C

Humidity 74%
Wind Speed S 5 MPH
Barometer NA
Dewpoint 35°F (2°C)
Visibility NA
Wind Chill40°F (4°C)
Last update 22 Jun 06:15 PM MDT
Extended Forecast for

Mammoth Hot Springs WY

  • Tonight

    Tonight: A chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and 11pm.  Snow level 7900 feet lowering to 6600 feet after midnight . Mostly cloudy, then gradually becoming mostly clear, with a low around 30. West southwest wind 5 to 9 mph becoming south southeast after midnight.  Chance of precipitation is 50%.

    Low: 30 °F

    Chance
    Showers then
    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 64. South southeast wind 6 to 10 mph becoming southwest in the afternoon.

    High: 64 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 36. Southwest wind 5 to 9 mph becoming calm  in the evening.

    Low: 36 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 72. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 72 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 42. West wind around 6 mph becoming light and variable.

    Low: 42 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 75. South southeast wind 5 to 11 mph becoming west southwest in the afternoon. Winds could gust as high as 21 mph.

    High: 75 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 45. Southwest wind 6 to 9 mph becoming south southeast after midnight.

    Low: 45 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 79. Breezy.

    High: 79 °F

    Sunny then
    Mostly Sunny
    and Breezy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 49.

    Low: 49 °F

    Partly Cloudy

Detailed Forecast

Tonight
A chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and 11pm. Snow level 7900 feet lowering to 6600 feet after midnight . Mostly cloudy, then gradually becoming mostly clear, with a low around 30. West southwest wind 5 to 9 mph becoming south southeast after midnight. Chance of precipitation is 50%.
Monday
Sunny, with a high near 64. South southeast wind 6 to 10 mph becoming southwest in the afternoon.
Monday Night
Mostly clear, with a low around 36. Southwest wind 5 to 9 mph becoming calm in the evening.
Tuesday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 72. Calm wind becoming southwest around 6 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 42. West wind around 6 mph becoming light and variable.
Wednesday
Sunny, with a high near 75. South southeast wind 5 to 11 mph becoming west southwest in the afternoon. Winds could gust as high as 21 mph.
Wednesday Night
Mostly clear, with a low around 45. Southwest wind 6 to 9 mph becoming south southeast after midnight.
Thursday
Mostly sunny, with a high near 79. Breezy.
Thursday Night
Partly cloudy, with a low around 49.
Friday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 79. Breezy.
Friday Night
Partly cloudy, with a low around 50.
Saturday
A chance of showers and thunderstorms. Sunny, with a high near 79.
Saturday Night
Partly cloudy, with a low around 48.
Sunday
Sunny, with a high near 81.
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ABOUT THIS FORECAST

 
Point Forecast:
Mammoth Hot Springs WY
 44.98°N 110.69°W (Elev. 5745 ft)
5:58 pm MDT Jun 22, 2025
7pm MDT Jun 22, 2025-6pm MDT Jun 29, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

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