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

San Antonio, San Antonio International Airport (KSAT)

Lat: 29.53°NLon: 98.46°WElev: 807ft.

Mostly Cloudy

92°F

33°C

Humidity 46%
Wind Speed N 10 G 21 mph
Barometer 29.89 in (1010.3 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index96°F (36°C)
Last update 27 Aug 6:51 pm CDT
Extended Forecast for

San Antonio TX

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 10pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 79. East wind around 5 mph becoming calm in the evening.

    Low: 79 °F

    Chance
    T-storms

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 100. Heat index values as high as 108. Calm wind becoming east around 5 mph in the afternoon.

    High: 100 °F

    Sunny then
    Slight Chance
    T-storms

  • Friday Night

    Friday Night: Mostly clear, with a low around 79. East southeast wind around 5 mph becoming calm after midnight.

    Low: 79 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 99. Heat index values as high as 106. Calm wind becoming east southeast around 5 mph in the afternoon.

    High: 99 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 77. East southeast wind 5 to 10 mph becoming south after midnight.

    Low: 77 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 99. South wind around 5 mph.

    High: 99 °F

    Hot

  • Sunday Night

    Sunday Night: Clear, with a low around 77. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 77 °F

    Clear

  • Monday

    Monday: Sunny and hot, with a high near 99. South southeast wind 5 to 10 mph.

    High: 99 °F

    Hot

  • Monday Night

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

    Low: 78 °F

    Mostly Clear

Detailed Forecast

Tonight
A 30 percent chance of showers and thunderstorms, mainly before 10pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 79. East wind around 5 mph becoming calm in the evening.
Friday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 100. Heat index values as high as 108. Calm wind becoming east around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 79. East southeast wind around 5 mph becoming calm after midnight.
Saturday
Sunny and hot, with a high near 99. Heat index values as high as 106. Calm wind becoming east southeast around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 77. East southeast wind 5 to 10 mph becoming south after midnight.
Sunday
Sunny and hot, with a high near 99. South wind around 5 mph.
Sunday Night
Clear, with a low around 77. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Monday
Sunny and hot, with a high near 99. South southeast wind 5 to 10 mph.
Monday Night
Mostly clear, with a low around 78. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday
Mostly sunny and hot, with a high near 99.
Tuesday Night
Mostly clear, with a low around 77.
Wednesday
Sunny and hot, with a high near 99.
Wednesday Night
Mostly clear, with a low around 77.
Thursday
Mostly sunny and hot, with a high near 99.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
San Antonio TX
 29.46°N 98.53°W (Elev. 699 ft)
Last Update:
7:20 pm CDT Aug 27, 2026
Forecast Valid:
7pm CDT Aug 27, 2026-6pm CDT Sep 3, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation