Severe Weather and Heavy Rainfall from the High Plains to the Ohio Valley; Heat Continuing in the Central Plains and Southeast

A stationary front will be the focus for daily showers and thunderstorms capable of widely scattered flash flooding and severe weather from the High Plains to the Ohio Valley. Monsoonal thunderstorms could cause local flash flooding across the Southwest and the Great Basin. Dangerous heat continues across the Central Plains and Southeast. Many areas will see their hottest temperatures of the year. Read More >

Current conditions at

Fort Smith Regional Airport (KFSM)

Lat: 35.33°NLon: 94.37°WElev: 436ft.

Fair

81°F

27°C

Humidity 82%
Wind Speed NE 5 mph
Barometer 29.96 in (1013.8 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 12 Aug 7:53 am CDT
Extended Forecast for

Lavaca AR

Heat Advisory August 12, 08:51am until August 14, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 12, 08:51am until August 14, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • Today

    High: 102 °F

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 79. South wind 5 to 10 mph.

    Low: 79 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 101. Heat index values as high as 108. South wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 101 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 78. South wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 78 °F

    Mostly Clear

  • Friday

    Friday: Sunny and hot, with a high near 101. Southwest wind 5 to 10 mph.

    High: 101 °F

    Hot

  • Friday Night

    Friday Night: Clear, with a low around 76. Southeast wind 5 to 10 mph.

    Low: 76 °F

    Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 101. Light south wind becoming southwest 5 to 10 mph in the morning.

    High: 101 °F

    Hot

  • Saturday Night

    Saturday Night: Clear, with a low around 77. South wind around 5 mph becoming calm  after midnight.

    Low: 77 °F

    Clear

Detailed Forecast

Today
Sunny and hot, with a high near 102. Heat index values as high as 109. Southwest wind 5 to 10 mph.
Tonight
Mostly clear, with a low around 79. South wind 5 to 10 mph.
Thursday
Sunny and hot, with a high near 101. Heat index values as high as 108. South wind 5 to 15 mph, with gusts as high as 20 mph.
Thursday Night
Mostly clear, with a low around 78. South wind 5 to 10 mph, with gusts as high as 20 mph.
Friday
Sunny and hot, with a high near 101. Southwest wind 5 to 10 mph.
Friday Night
Clear, with a low around 76. Southeast wind 5 to 10 mph.
Saturday
Sunny and hot, with a high near 101. Light south wind becoming southwest 5 to 10 mph in the morning.
Saturday Night
Clear, with a low around 77. South wind around 5 mph becoming calm after midnight.
Sunday
Sunny and hot, with a high near 104. Calm wind becoming west around 5 mph in the morning.
Sunday Night
Mostly clear, with a low around 77. Southwest wind around 5 mph becoming calm in the evening.
Monday
Sunny and hot, with a high near 104. Calm wind becoming west around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 76. West wind around 5 mph becoming calm in the evening.
Tuesday
Sunny and hot, with a high near 102. Calm wind becoming southwest around 5 mph in the afternoon.
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ABOUT THIS FORECAST

 
Point Forecast:
Lavaca AR
 35.34°N 94.17°W
7:50 am CDT Aug 12, 2026
8am CDT Aug 12, 2026-6pm CDT Aug 18, 2026
 
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Additional Resources

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