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

Marshall (KASL)

Lat: 32.52°NLon: 94.31°WElev: 357ft.

Fair

77°F

25°C

Humidity 94%
Wind Speed S 6 mph
Barometer 29.98 in
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 19 Aug 7:35 am CDT
Extended Forecast for

6 Miles ESE Karnack TX

Heat Advisory August 19, 07:39am until August 20, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 19, 07:39am until August 20, 08:00pm

    NOW until 8:00pm Thu

    Heat Advisory

  • Today

    High: 102 °F

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 79. South wind around 5 mph.

    Low: 79 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 104. Heat index values as high as 111. Southwest wind around 5 mph.

    High: 104 °F

    Hot

  • Thursday Night

    Thursday Night: A 20 percent chance of showers and thunderstorms before 1am.  Mostly clear, with a low around 79. Calm wind becoming southwest around 5 mph after midnight.

    Low: 79 °F

    Slight Chance
    T-storms

  • Friday

    Friday: Sunny and hot, with a high near 104. Southwest wind around 5 mph becoming northwest in the afternoon.

    High: 104 °F

    Hot

  • Friday Night

    Friday Night: Mostly clear, with a low around 76.

    Low: 76 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 102.

    High: 102 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 77.

    Low: 77 °F

    Mostly Clear

Detailed Forecast

Today
Mostly sunny and hot, with a high near 102. Heat index values as high as 107. Southwest wind around 5 mph.
Tonight
Mostly clear, with a low around 79. South wind around 5 mph.
Thursday
Sunny and hot, with a high near 104. Heat index values as high as 111. Southwest wind around 5 mph.
Thursday Night
A 20 percent chance of showers and thunderstorms before 1am. Mostly clear, with a low around 79. Calm wind becoming southwest around 5 mph after midnight.
Friday
Sunny and hot, with a high near 104. Southwest wind around 5 mph becoming northwest in the afternoon.
Friday Night
Mostly clear, with a low around 76.
Saturday
Sunny and hot, with a high near 102.
Saturday Night
Mostly clear, with a low around 77.
Sunday
Sunny and hot, with a high near 104.
Sunday Night
Mostly clear, with a low around 79.
Monday
Sunny and hot, with a high near 102.
Monday Night
Mostly clear, with a low around 78.
Tuesday
Sunny and hot, with a high near 102.
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles ESE Karnack TX
 32.61°N 94.03°W (Elev. 253 ft)
6:30 am CDT Aug 19, 2026
7am CDT Aug 19, 2026-6pm CDT Aug 25, 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