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

Duncan, Halliburton Field Airport (KDUC)

Lat: 34.47°NLon: 97.96°WElev: 1112ft.

Fair

88°F

31°C

Humidity 35%
Wind Speed S 10 mph
Barometer 29.93 in
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 19 Aug 12:35 am CDT
Extended Forecast for

6 Miles SSE Sterling OK

Extreme Heat Warning August 19, 11:00am until August 19, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  • Overnight

    Overnight: Mostly clear, with a low around 78. South wind 8 to 10 mph.

    Low: 78 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 107. West southwest wind 8 to 10 mph.

    High: 107 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 76. Southeast wind 6 to 9 mph.

    Low: 76 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 105. East southeast wind around 6 mph becoming west northwest in the afternoon.

    High: 105 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 74. East wind around 7 mph.

    Low: 74 °F

    Mostly Clear

  • Friday

    Friday: Sunny and hot, with a high near 104.

    High: 104 °F

    Hot

  • Friday Night

    Friday Night: Mostly clear, with a low around 75.

    Low: 75 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 105.

    High: 105 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 75.

    Low: 75 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 78. South wind 8 to 10 mph.
Wednesday
Sunny and hot, with a high near 107. West southwest wind 8 to 10 mph.
Wednesday Night
Mostly clear, with a low around 76. Southeast wind 6 to 9 mph.
Thursday
Sunny and hot, with a high near 105. East southeast wind around 6 mph becoming west northwest in the afternoon.
Thursday Night
Mostly clear, with a low around 74. East wind around 7 mph.
Friday
Sunny and hot, with a high near 104.
Friday Night
Mostly clear, with a low around 75.
Saturday
Sunny and hot, with a high near 105.
Saturday Night
Mostly clear, with a low around 75.
Sunday
Sunny and hot, with a high near 106.
Sunday Night
Mostly clear, with a low around 78.
Monday
Sunny and hot, with a high near 106.
Monday Night
Mostly clear, with a low around 77.
Tuesday
Sunny and hot, with a high near 105.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles SSE Sterling OK
 34.66°N 98.13°W
9:37 pm CDT Aug 18, 2026
12am CDT Aug 19, 2026-6pm CDT Aug 25, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database