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

Severe Thunderstorms in the Midwest and Arizona; Heat Continues in the Southeast and Southwest

Thunderstorms, some severe, may lead to scattered instances of flash flooding across the Midwest and Ohio Valley and southern Arizona. The threat will shift to the Mid-Atlantic coast on Thursday. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that little-to-no relief from the scorching daytime highs will be available. Read More >

Hazardous Weather Conditions

Current conditions at

Norman / Max Westheimer (KOUN)

Lat: 35.24°NLon: 97.47°WElev: 1182ft.

Fair

82°F

28°C

Humidity 54%
Wind Speed Calm
Barometer 29.89 in
Dewpoint 64°F (18°C)
Visibility NA
Heat Index83°F (28°C)
Last update 20 Aug 3:15 am CDT
Extended Forecast for

2 Miles ENE Norman OK

Heat Advisory August 20, 01:00pm until August 20, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • Overnight

    Overnight: A 10 percent chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 76. East southeast wind around 5 mph.

    Low: 76 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms before 10am. Mostly sunny and hot, with a high near 103. East wind 3 to 6 mph.

    High: 103 °F

    Slight Chance
    T-storms then
    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 75. East southeast wind 5 to 7 mph.

    Low: 75 °F

    Partly Cloudy

  • Friday

    Friday: Sunny and hot, with a high near 104. Heat index values as high as 107. South wind 3 to 7 mph.

    High: 104 °F

    Hot

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 76. South southeast wind 6 to 8 mph.

    Low: 76 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

  • Saturday

    Saturday: Mostly sunny and hot, with a high near 103.

    High: 103 °F

    Hot

  • Saturday Night

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

    Low: 75 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny and hot, with a high near 101.

    High: 101 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 77.

    Low: 77 °F

    Mostly Clear

Detailed Forecast

Overnight
A 10 percent chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 76. East southeast wind around 5 mph.
Thursday
A 20 percent chance of showers and thunderstorms before 10am. Mostly sunny and hot, with a high near 103. East wind 3 to 6 mph.
Thursday Night
Partly cloudy, with a low around 75. East southeast wind 5 to 7 mph.
Friday
Sunny and hot, with a high near 104. Heat index values as high as 107. South wind 3 to 7 mph.
Friday Night
A 20 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 76. South southeast wind 6 to 8 mph.
Saturday
Mostly sunny and hot, with a high near 103.
Saturday Night
Mostly clear, with a low around 75.
Sunday
Mostly sunny and hot, with a high near 101.
Sunday Night
Mostly clear, with a low around 77.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 103.
Monday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 77.
Tuesday
Mostly sunny and hot, with a high near 102.
Tuesday Night
Partly cloudy, with a low around 76.
Wednesday
Mostly sunny and hot, with a high near 99.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ENE Norman OK
 35.23°N 97.4°W
Last Update:
1:26 am CDT Aug 20, 2026
Forecast Valid:
3am CDT Aug 20, 2026-6pm CDT Aug 26, 2026
 
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Additional Resources

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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