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

58°F

14°C

Humidity 63%
Wind Speed SW 5 MPH
Barometer NA
Dewpoint 46°F (8°C)
Visibility NA
Last update 19 Aug 12:15 AM MDT
Extended Forecast for

5 Miles WNW Mammoth Hot Springs WY

  • Overnight

    Overnight: Partly cloudy, with a low around 45. Light west wind.

    Low: 45 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 72. Calm wind becoming west northwest 5 to 8 mph in the afternoon.

    High: 72 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 46. West wind 3 to 8 mph.

    Low: 46 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 77. Light and variable wind becoming west 5 to 8 mph in the afternoon.

    High: 77 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 52. West northwest wind 5 to 7 mph becoming light and variable  after midnight.

    Low: 52 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 79. Calm wind becoming west northwest around 6 mph in the afternoon.

    High: 79 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 55. North wind around 6 mph becoming light and variable.

    Low: 55 °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 71. Chance of precipitation is 50%.

    High: 71 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 50 percent chance of showers and thunderstorms before midnight.  Mostly cloudy, with a low around 50.

    Low: 50 °F

    Chance
    Showers then
    Mostly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 45. Light west wind.
Wednesday
Sunny, with a high near 72. Calm wind becoming west northwest 5 to 8 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 46. West wind 3 to 8 mph.
Thursday
Sunny, with a high near 77. Light and variable wind becoming west 5 to 8 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 52. West northwest wind 5 to 7 mph becoming light and variable after midnight.
Friday
Mostly sunny, with a high near 79. Calm wind becoming west northwest around 6 mph in the afternoon.
Friday Night
Mostly cloudy, with a low around 55. North wind around 6 mph becoming light and variable.
Saturday
A slight chance of showers, then a chance of showers and thunderstorms after noon. Mostly cloudy, with a high near 71. Chance of precipitation is 50%.
Saturday Night
A 50 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 50.
Sunday
A slight chance of showers, then a chance of showers and thunderstorms after noon. Mostly sunny, with a high near 69. Chance of precipitation is 40%.
Sunday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 47.
Monday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 69.
Monday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 48.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 68.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles WNW Mammoth Hot Springs WY
 44.99°N 110.81°W (Elev. 8094 ft)
12:31 am MDT Aug 19, 2026
1am MDT Aug 19, 2026-6pm MDT Aug 25, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database