Severe Thunderstorms and Heavy Rain Across the Ohio Valley;

Severe thunderstorms with damaging wind gusts will be possible from the mid-Mississippi Valley into parts of the Ohio Valley and central Appalachians. Heavy rain associated with these storms may lead to considerable flash and urban flooding impacts across portions of the Ohio Valley. Mid-summer heat persists from the Central Plains to the Southeast. Read More >

Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

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

NA

56°F

13°C

Humidity 41%
Wind Speed WSW 5 MPH
Barometer NA
Dewpoint 33°F (1°C)
Visibility NA
Last update 11 Aug 05:15 AM MDT
Extended Forecast for

2 Miles S Mammoth Hot Springs WY

Red Flag Warning August 11, 12:00pm until August 11, 09:00pm
Click here for hazard details and duration
Red Flag Warning
  • Today

    Today: Widespread smoke, mainly between 8am and noon. Sunny, with a high near 82. Light south wind becoming west 8 to 13 mph in the morning. Winds could gust as high as 24 mph.

    High: 82 °F

    Smoke

  • Tonight

    Tonight: Widespread smoke, mainly between 9pm and 5am. Mostly cloudy, with a low around 51. West northwest wind 6 to 11 mph becoming light west  after midnight. Winds could gust as high as 21 mph.

    Low: 51 °F

    Smoke

  • Wednesday

    Wednesday: Partly sunny, with a high near 75. Calm wind becoming west 5 to 8 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 75 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight.  Mostly cloudy, with a low around 48. Southwest wind 5 to 7 mph becoming light and variable  in the evening.  Chance of precipitation is 20%.

    Low: 48 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm after noon.  Mostly cloudy, with a high near 69. Light and variable wind becoming southwest around 5 mph.  Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 69 °F

    Partly Sunny
    then Showers
    Likely

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm.  Low around 46. Light south southeast wind.  Chance of precipitation is 80%.

    Low: 46 °F

    Showers

  • Friday

    Friday: Showers and possibly a thunderstorm.  High near 63. West southwest wind 3 to 6 mph.  Chance of precipitation is 90%.

    High: 63 °F

    Showers
    Likely then
    Showers

  • Friday Night

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

    Low: 44 °F

    Showers then
    Slight Chance
    Showers

  • Saturday

    Saturday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after noon.  Partly sunny, with a high near 66. Chance of precipitation is 60%.

    High: 66 °F

    Showers
    Likely

Detailed Forecast

Today
Widespread smoke, mainly between 8am and noon. Sunny, with a high near 82. Light south wind becoming west 8 to 13 mph in the morning. Winds could gust as high as 24 mph.
Tonight
Widespread smoke, mainly between 9pm and 5am. Mostly cloudy, with a low around 51. West northwest wind 6 to 11 mph becoming light west after midnight. Winds could gust as high as 21 mph.
Wednesday
Partly sunny, with a high near 75. Calm wind becoming west 5 to 8 mph in the afternoon. Winds could gust as high as 20 mph.
Wednesday Night
A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Mostly cloudy, with a low around 48. Southwest wind 5 to 7 mph becoming light and variable in the evening. Chance of precipitation is 20%.
Thursday
Showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 69. Light and variable wind becoming southwest around 5 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Showers and possibly a thunderstorm. Low around 46. Light south southeast wind. Chance of precipitation is 80%.
Friday
Showers and possibly a thunderstorm. High near 63. West southwest wind 3 to 6 mph. Chance of precipitation is 90%.
Friday Night
Showers and possibly a thunderstorm before midnight, then a slight chance of showers. Low around 44. Chance of precipitation is 80%.
Saturday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 66. Chance of precipitation is 60%.
Saturday Night
A 30 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 43.
Sunday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 70.
Sunday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 44.
Monday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 70.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles S Mammoth Hot Springs WY
 44.94°N 110.71°W (Elev. 7172 ft)
5:48 am MDT Aug 11, 2026
6am MDT Aug 11, 2026-6pm MDT Aug 17, 2026
 
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Additional Resources

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