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

81°F

27°C

Humidity 74%
Wind Speed SE 13 mph
Barometer 30.14 in (1018.6 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 16 Aug 12:51 am CDT
Extended Forecast for

San Antonio TX

  • Overnight

    Overnight: Partly cloudy, with a low around 76. South southeast wind 5 to 10 mph.

    Low: 76 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, then gradually becoming sunny and hot, with a high near 100. Heat index values as high as 104. South southeast wind around 5 mph.

    High: 100 °F

    Hot

  • Sunday Night

    Sunday Night: Increasing clouds, with a low around 76. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 76 °F

    Increasing
    Clouds

  • Monday

    Monday: Partly sunny, then gradually becoming sunny and hot, with a high near 99. Heat index values as high as 103. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 99 °F

    Hot

  • Monday Night

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

    Low: 77 °F

    Mostly Clear

  • Tuesday

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

    High: 99 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 78. South southeast wind 5 to 10 mph.

    Low: 78 °F

    Mostly Clear

  • Wednesday

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

    High: 100 °F

    Hot

  • Wednesday Night

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

    Low: 78 °F

    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 76. South southeast wind 5 to 10 mph.
Sunday
Partly sunny, then gradually becoming sunny and hot, with a high near 100. Heat index values as high as 104. South southeast wind around 5 mph.
Sunday Night
Increasing clouds, with a low around 76. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Monday
Partly sunny, then gradually becoming sunny and hot, with a high near 99. Heat index values as high as 103. Calm wind becoming southeast around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 77. South southeast wind 5 to 10 mph.
Tuesday
Sunny and hot, with a high near 99. South wind around 5 mph.
Tuesday Night
Mostly clear, with a low around 78. South southeast wind 5 to 10 mph.
Wednesday
Sunny and hot, with a high near 100. South wind around 5 mph.
Wednesday Night
Mostly clear, with a low around 78. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday
Mostly sunny and hot, with a high near 101.
Thursday Night
Mostly clear, with a low around 78.
Friday
Sunny and hot, with a high near 101.
Friday Night
Mostly clear, with a low around 79.
Saturday
Sunny and hot, with a high near 101.
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ABOUT THIS FORECAST

 
Point Forecast:
San Antonio TX
 29.46°N 98.5°W (Elev. 741 ft)
Last Update:
12:42 am CDT Aug 16, 2026
Forecast Valid:
1am CDT Aug 16, 2026-6pm CDT Aug 22, 2026
 
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Additional Resources

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