Thunderstorms and Heavy Rain in the Mid-South; Heat Continues in the Southeast and Southwest

Severe thunderstorms and heavy rain are expected across portions of the mid-Mississippi Valley into the Ohio Valley and portions of Arizona. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that, when combined with oppressive dew points, little-to-no relief from the scorching daytime highs will be available. Read More >

Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

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

NA

49°F

9°C

Humidity 76%
Wind Speed SSW 2 MPH
Barometer NA
Dewpoint 41°F (5°C)
Visibility NA
Last update 19 Aug 05:15 AM MDT
Extended Forecast for

5 Miles SSW Mammoth Hot Springs WY

  • Today

    Today: Sunny, with a high near 75. Calm wind becoming west 5 to 8 mph in the afternoon.

    High: 75 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 43. West northwest wind 5 to 8 mph becoming calm  in the evening.

    Low: 43 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 81. Light and variable wind becoming west 5 to 8 mph in the afternoon.

    High: 81 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 48. West wind around 6 mph becoming light and variable  in the evening.

    Low: 48 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 83. Calm wind becoming west northwest around 5 mph in the afternoon.

    High: 83 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 50. Light and variable wind becoming south around 6 mph after midnight.

    Low: 50 °F

    Mostly Cloudy

  • Saturday

    Saturday: A slight chance of showers, then a chance of showers and thunderstorms after noon.  Mostly cloudy, with a high near 75. South wind 6 to 9 mph, with gusts as high as 22 mph.  Chance of precipitation is 50%.

    High: 75 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 40 percent chance of showers and thunderstorms before midnight.  Mostly cloudy, with a low around 46.

    Low: 46 °F

    Chance
    Showers then
    Mostly Cloudy

  • Sunday

    Sunday: A slight chance of showers, then a chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 73. Chance of precipitation is 40%.

    High: 73 °F

    Slight Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Today
Sunny, with a high near 75. Calm wind becoming west 5 to 8 mph in the afternoon.
Tonight
Mostly clear, with a low around 43. West northwest wind 5 to 8 mph becoming calm in the evening.
Thursday
Sunny, with a high near 81. Light and variable wind becoming west 5 to 8 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 48. West wind around 6 mph becoming light and variable in the evening.
Friday
Mostly sunny, with a high near 83. Calm wind becoming west northwest around 5 mph in the afternoon.
Friday Night
Mostly cloudy, with a low around 50. Light and variable wind becoming south around 6 mph after midnight.
Saturday
A slight chance of showers, then a chance of showers and thunderstorms after noon. Mostly cloudy, with a high near 75. South wind 6 to 9 mph, with gusts as high as 22 mph. Chance of precipitation is 50%.
Saturday Night
A 40 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 46.
Sunday
A slight chance of showers, then a chance of showers and thunderstorms after noon. Mostly sunny, with a high near 73. Chance of precipitation is 40%.
Sunday Night
A 20 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 44.
Monday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 73.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 44.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 72.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSW Mammoth Hot Springs WY
 44.89°N 110.74°W (Elev. 7402 ft)
6:01 am MDT Aug 19, 2026
6am MDT Aug 19, 2026-6pm MDT Aug 25, 2026
 
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Additional Resources

Radar & Satellite Image

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National Digital Forecast Database