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.

Partly Cloudy

85°F

29°C

Humidity 63%
Wind Speed S 7 mph
Barometer 30.07 in (1016.2 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index90°F (32°C)
Last update 9 Aug 10:51 am CDT
Extended Forecast for

San Antonio International Airport TX

  • Today

    Today: A 20 percent chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 96. Heat index values as high as 104. Southeast wind 5 to 10 mph.

    High: 96 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Mostly clear, with a low around 77. South southeast wind 5 to 10 mph.

    Low: 77 °F

    Mostly Clear

  • Monday

    Monday: Mostly cloudy, then gradually becoming sunny, with a high near 97. Heat index values as high as 106. South southeast wind 5 to 10 mph.

    High: 97 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Partly cloudy, with a low around 77. South southeast wind 5 to 15 mph.

    Low: 77 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny and hot, with a high near 99. South southeast wind 5 to 10 mph.

    High: 99 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 77. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 77 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 100. South southeast wind 5 to 15 mph.

    High: 100 °F

    Hot

  • Wednesday Night

    Wednesday Night: Clear, with a low around 77. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 77 °F

    Clear

  • Thursday

    Thursday: Mostly sunny and hot, with a high near 101. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 101 °F

    Hot

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 96. Heat index values as high as 104. Southeast wind 5 to 10 mph.
Tonight
Mostly clear, with a low around 77. South southeast wind 5 to 10 mph.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 97. Heat index values as high as 106. South southeast wind 5 to 10 mph.
Monday Night
Partly cloudy, with a low around 77. South southeast wind 5 to 15 mph.
Tuesday
Mostly sunny and hot, with a high near 99. South southeast wind 5 to 10 mph.
Tuesday Night
Mostly clear, with a low around 77. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday
Sunny and hot, with a high near 100. South southeast wind 5 to 15 mph.
Wednesday Night
Clear, with a low around 77. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday
Mostly sunny and hot, with a high near 101. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday Night
Mostly clear, with a low around 77.
Friday
Mostly sunny and hot, with a high near 100.
Friday Night
Mostly clear, with a low around 77.
Saturday
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
 29.53°N 98.48°W (Elev. 817 ft)
Last Update:
9:44 am CDT Aug 9, 2026
Forecast Valid:
11am CDT Aug 9, 2026-6pm CDT Aug 15, 2026
 
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Additional Resources

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