Heat Persists in the South Central U.S. and Southwest; Heavy rains in the Desert Southwest and Central Plains

Sweltering heat remains across the South-Central Plains, Lower/Middle Mississippi Valley, and the Southwest this week with limited nighttime relief. Thunderstorms will bring heavy rainfall leading to localized flash flooding in portions of the Desert Southwest and central Plains. Isolated strong to severe thunderstorms are possible across portions of the central Plains into the Northeast. Read More >

Current conditions at

Fort Smith Regional Airport (KFSM)

Lat: 35.33°NLon: 94.37°WElev: 436ft.

Fair

80°F

27°C

Humidity 74%
Wind Speed NE 3 mph
Barometer 30.09 in (1018.3 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 9 Sep 5:53 am CDT
Extended Forecast for

Charleston AR

Extreme Heat Warning September 9, 12:00pm until September 9, 07:00pm
Click here for hazard details and duration
Extreme Heat Warning
  • Today

    Today: Sunny and hot, with a high near 103. Heat index values as high as 109. Light and variable wind becoming south 5 to 10 mph in the morning.

    High: 103 °F

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 75. South wind around 5 mph.

    Low: 75 °F

    Mostly Clear

  • Thursday

    Thursday: A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm.  Mostly sunny, with a high near 96. Heat index values as high as 101. Calm wind becoming west around 5 mph in the morning.  Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 96 °F

    Mostly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 71. North wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 50%.

    Low: 71 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 1pm.  Partly sunny, with a high near 96. South wind around 5 mph.  Chance of precipitation is 50%.

    High: 96 °F

    Chance
    Showers then
    Chance
    T-storms

  • Friday Night

    Friday Night: A slight chance of thunderstorms before 7pm.  Mostly clear, with a low around 71. Southeast wind around 5 mph.  Chance of precipitation is 10%.

    Low: 71 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after 1pm.  Sunny, with a high near 99. East wind around 5 mph becoming south in the afternoon.

    High: 99 °F

    Sunny then
    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 72. Southeast wind around 5 mph.

    Low: 72 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 99. South wind 5 to 10 mph.

    High: 99 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny and hot, with a high near 103. Heat index values as high as 109. Light and variable wind becoming south 5 to 10 mph in the morning.
Tonight
Mostly clear, with a low around 75. South wind around 5 mph.
Thursday
A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 96. Heat index values as high as 101. Calm wind becoming west around 5 mph in the morning. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. North wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%.
Friday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 96. South wind around 5 mph. Chance of precipitation is 50%.
Friday Night
A slight chance of thunderstorms before 7pm. Mostly clear, with a low around 71. Southeast wind around 5 mph. Chance of precipitation is 10%.
Saturday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 99. East wind around 5 mph becoming south in the afternoon.
Saturday Night
Partly cloudy, with a low around 72. Southeast wind around 5 mph.
Sunday
Mostly sunny, with a high near 99. South wind 5 to 10 mph.
Sunday Night
Mostly clear, with a low around 73. Southeast wind around 10 mph.
Monday
Sunny, with a high near 99. South wind 5 to 15 mph, with gusts as high as 20 mph.
Monday Night
A 20 percent chance of showers. Mostly clear, with a low around 72. South wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday
A 30 percent chance of showers and thunderstorms. Sunny, with a high near 98. South wind around 5 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Charleston AR
 35.29°N 94.04°W
6:11 am CDT Sep 9, 2026
6am CDT Sep 9, 2026-6pm CDT Sep 15, 2026
 
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Additional Resources

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