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

Dangerous Heat over the South-Central and Southwest U.S. Through Next Week

Dangerous heat persists across the Desert Southwest through this weekend and across the Southern Plains and Lower Mississippi Valley through at least the middle of next week. Numerous daily record high temperatures are expected through at least Tuesday for much of Texas and Oklahoma as well as portions of Louisiana, New Mexico, and Arizona. Read More >

Current conditions at

Alva, Alva Regional Airport (KAVK)

Lat: 36.77°NLon: 98.67°WElev: 1473ft.

Fair

81°F

27°C

Humidity 66%
Wind Speed SE 8 mph
Barometer 30.05 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 22 Aug 9:35 pm CDT
Extended Forecast for

Byron OK

  • Tonight

    Tonight: Partly cloudy, with a low around 72. East wind around 9 mph.

    Low: 72 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny and hot, with a high near 100. East southeast wind 8 to 10 mph, with gusts as high as 20 mph.

    High: 100 °F

    Hot

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 73. East wind 7 to 11 mph, with gusts as high as 21 mph.

    Low: 73 °F

    Partly Cloudy

  • Monday

    Monday: Sunny and hot, with a high near 104. Heat index values as high as 107. Northeast wind around 7 mph.

    High: 104 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 73. East wind 3 to 6 mph.

    Low: 73 °F

    Mostly Clear

  • Tuesday

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

    High: 101 °F

    Hot

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 72.

    Low: 72 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 96.

    High: 96 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 71.

    Low: 71 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

Detailed Forecast

Tonight
Partly cloudy, with a low around 72. East wind around 9 mph.
Sunday
Partly sunny and hot, with a high near 100. East southeast wind 8 to 10 mph, with gusts as high as 20 mph.
Sunday Night
Partly cloudy, with a low around 73. East wind 7 to 11 mph, with gusts as high as 21 mph.
Monday
Sunny and hot, with a high near 104. Heat index values as high as 107. Northeast wind around 7 mph.
Monday Night
Mostly clear, with a low around 73. East wind 3 to 6 mph.
Tuesday
Mostly sunny and hot, with a high near 101.
Tuesday Night
A 30 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 72.
Wednesday
A 30 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 96.
Wednesday Night
A 20 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 71.
Thursday
Mostly sunny and hot, with a high near 97.
Thursday Night
A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 71.
Friday
Sunny and hot, with a high near 101.
Friday Night
Mostly clear, with a low around 74.
Saturday
Sunny and hot, with a high near 104.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Byron OK
 36.9°N 98.31°W
Last Update:
7:37 pm CDT Aug 22, 2026
Forecast Valid:
9pm CDT Aug 22, 2026-6pm CDT Aug 29, 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