National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Severe Thunderstorms in the Central Plains and Lower Missouri Valley; Heat Continues in the Southeast and Southwest

Severe thunderstorms capable of large hail and damaging wind gusts are forecast to impact the central Plains into the Lower Missouri Valley through this afternoon. Dangerous heat persists across the southern Plains, Southeast U.S. and Puerto Rico this week, and will return to the Southwest today. Read More >

Hazardous Weather Conditions

Current conditions at

De Queen, J Lynn Helms Sevier County Airport (KDEQ)

Lat: 34.05°NLon: 94.4°WElev: 354ft.

Fair

104°F

40°C

Humidity 27%
Wind Speed SW 13 mph
Barometer 29.92 in (1012.6 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Heat Index107°F (42°C)
Last update 18 Aug 3:53 pm CDT
Extended Forecast for

Smithville OK

Heat Advisory August 18, 04:00pm until August 19, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 18, 04:00pm until August 19, 08:00pm

    NOW until 8:00pm Wed

    Heat Advisory

  • Tonight

    Low: 74 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 103. Heat index values as high as 106. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 103 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 75. South wind around 5 mph becoming calm.

    Low: 75 °F

    Mostly Clear

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 101. Heat index values as high as 105. Calm wind becoming west around 5 mph.

    High: 101 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 71. Calm wind.

    Low: 71 °F

    Partly Cloudy

  • Friday

    Friday: Sunny and hot, with a high near 100.

    High: 100 °F

    Hot

  • Friday Night

    Friday Night: Mostly clear, with a low around 70.

    Low: 70 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 100.

    High: 100 °F

    Hot

Detailed Forecast

Tonight
Mostly clear, with a low around 74. Calm wind.
Wednesday
Sunny and hot, with a high near 103. Heat index values as high as 106. Calm wind becoming southwest around 5 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 75. South wind around 5 mph becoming calm.
Thursday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 101. Heat index values as high as 105. Calm wind becoming west around 5 mph.
Thursday Night
Partly cloudy, with a low around 71. Calm wind.
Friday
Sunny and hot, with a high near 100.
Friday Night
Mostly clear, with a low around 70.
Saturday
Sunny and hot, with a high near 100.
Saturday Night
Mostly clear, with a low around 71.
Sunday
Sunny and hot, with a high near 99.
Sunday Night
A 20 percent chance of showers. Mostly clear, with a low around 72.
Monday
Sunny and hot, with a high near 99.
Monday Night
Mostly clear, with a low around 73.
Tuesday
Sunny and hot, with a high near 99.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Smithville OK
 34.46°N 94.65°W (Elev. 699 ft)
Last Update:
1:25 pm CDT Aug 18, 2026
Forecast Valid:
4pm CDT Aug 18, 2026-6pm CDT Aug 25, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation