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

Fort Smith Regional Airport (KFSM)

Lat: 35.33°NLon: 94.37°WElev: 436ft.

Fair

79°F

26°C

Humidity 82%
Wind Speed Calm
Barometer 29.90 in (1011.6 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 19 Aug 5:53 am CDT
Extended Forecast for

Charleston AR

Extreme Heat Warning August 19, 06:28am until August 19, 09:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning August 19, 06:28am until August 19, 09:00pm

    NOW until 9:00pm Wed

    Extreme Heat Warning

  • Today

    High: 108 °F

    Sunny then
    Slight Chance
    T-storms

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms after 4am.  Partly cloudy, with a low around 77. Southwest wind 5 to 10 mph becoming north after midnight.

    Low: 77 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

  • Thursday

    Thursday: A slight chance of showers and thunderstorms before 10am, then a slight chance of showers and thunderstorms after 1pm.  Sunny and hot, with a high near 103. Heat index values as high as 109. Calm wind becoming north around 5 mph in the morning.  Chance of precipitation is 20%.

    High: 103 °F

    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 71. East wind around 5 mph.

    Low: 71 °F

    Mostly Clear

  • Friday

    Friday: Sunny and hot, with a high near 102. East wind around 5 mph.

    High: 102 °F

    Hot

  • Friday Night

    Friday Night: Mostly clear, with a low around 71. Northeast wind around 5 mph becoming calm  in the evening.

    Low: 71 °F

    Mostly Clear

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after 1pm.  Sunny and hot, with a high near 102. Calm wind becoming northeast around 5 mph in the afternoon.

    High: 102 °F

    Sunny then
    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 73. East wind around 5 mph.

    Low: 73 °F

    Mostly Clear

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 108. Heat index values as high as 113. Southwest wind 5 to 10 mph.
Tonight
A 20 percent chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 77. Southwest wind 5 to 10 mph becoming north after midnight.
Thursday
A slight chance of showers and thunderstorms before 10am, then a slight chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 103. Heat index values as high as 109. Calm wind becoming north around 5 mph in the morning. Chance of precipitation is 20%.
Thursday Night
Mostly clear, with a low around 71. East wind around 5 mph.
Friday
Sunny and hot, with a high near 102. East wind around 5 mph.
Friday Night
Mostly clear, with a low around 71. Northeast wind around 5 mph becoming calm in the evening.
Saturday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 102. Calm wind becoming northeast around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 73. East wind around 5 mph.
Sunday
Sunny and hot, with a high near 102. East wind 5 to 10 mph.
Sunday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 74. Southeast wind around 10 mph.
Monday
Mostly sunny and hot, with a high near 102. East wind around 10 mph becoming southwest in the afternoon. Winds could gust as high as 20 mph.
Monday Night
Mostly clear, with a low around 75. South wind 5 to 10 mph.
Tuesday
Sunny and hot, with a high near 103. Southeast wind 5 to 10 mph becoming west in the afternoon.
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ABOUT THIS FORECAST

 
Point Forecast:
Charleston AR
 35.29°N 94.04°W
3:50 am CDT Aug 19, 2026
6am CDT Aug 19, 2026-6pm CDT Aug 25, 2026
 
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Additional Resources

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