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.

A Few Clouds

99°F

37°C

Humidity 28%
Wind Speed SE 8 mph
Barometer 29.90 in (1010.3 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Heat Index100°F (38°C)
Last update 8 Aug 5:51 pm CDT
Extended Forecast for

San Antonio International Airport TX

  • Tonight

    Tonight: Clear, with a low around 75. Southeast wind 5 to 10 mph.

    Low: 75 °F

    Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 99. Heat index values as high as 104. 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 74. East southeast wind 5 to 10 mph.

    Low: 74 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 97. Heat index values as high as 100. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 97 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 74. Southeast wind 5 to 10 mph.

    Low: 74 °F

    Mostly Clear

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 97. Calm wind becoming east southeast around 5 mph in the afternoon.

    High: 97 °F

    Sunny then
    Slight Chance
    T-storms

  • Monday Night

    Monday Night: Partly cloudy, with a low around 75. South southeast wind 5 to 10 mph.

    Low: 75 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 96. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 96 °F

    Sunny then
    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 75. Southeast wind 5 to 10 mph.

    Low: 75 °F

    Partly Cloudy

Detailed Forecast

Tonight
Clear, with a low around 75. Southeast wind 5 to 10 mph.
Saturday
Sunny and hot, with a high near 99. Heat index values as high as 104. Calm wind becoming east southeast around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 74. East southeast wind 5 to 10 mph.
Sunday
Sunny, with a high near 97. Heat index values as high as 100. Calm wind becoming southeast around 5 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 74. Southeast wind 5 to 10 mph.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 97. Calm wind becoming east southeast around 5 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 75. South southeast wind 5 to 10 mph.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 96. Calm wind becoming southeast around 5 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 75. Southeast wind 5 to 10 mph.
Wednesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 96.
Wednesday Night
Partly cloudy, with a low around 76.
Thursday
Mostly sunny, with a high near 97.
Thursday Night
Partly cloudy, with a low around 76.
Friday
Mostly sunny, with a high near 98.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
San Antonio International Airport TX
 29.55°N 98.46°W (Elev. 751 ft)
Last Update:
6:02 pm CDT Aug 8, 2025
Forecast Valid:
6pm CDT Aug 8, 2025-6pm CDT Aug 15, 2025
 
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Additional Resources

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