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

82°F

28°C

Humidity 69%
Wind Speed SE 9 mph
Barometer 30.06 in (1015.8 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 9 Sep 11:51 pm CDT
Extended Forecast for

San Antonio TX

  • Overnight

    Overnight: Partly cloudy, with a low around 79. South southeast wind around 5 mph.

    Low: 79 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 97. Heat index values as high as 105. Calm wind becoming south southwest around 5 mph in the afternoon.

    High: 97 °F

    Mostly Sunny

  • Thursday Night

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

    Low: 78 °F

    Mostly Clear

  • Friday

    Friday: Sunny and hot, with a high near 99. Heat index values as high as 107. Calm wind becoming south around 5 mph in the morning.

    High: 99 °F

    Hot

  • Friday Night

    Friday Night: Mostly clear, with a low around 79. Southeast wind around 10 mph, with gusts as high as 20 mph.

    Low: 79 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 100. South southeast wind 5 to 10 mph.

    High: 100 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 79. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 79 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny and hot, with a high near 99. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 99 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 78. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 78 °F

    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 79. South southeast wind around 5 mph.
Thursday
Mostly sunny, with a high near 97. Heat index values as high as 105. Calm wind becoming south southwest around 5 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 78. South southeast wind 5 to 10 mph.
Friday
Sunny and hot, with a high near 99. Heat index values as high as 107. Calm wind becoming south around 5 mph in the morning.
Friday Night
Mostly clear, with a low around 79. Southeast wind around 10 mph, with gusts as high as 20 mph.
Saturday
Sunny and hot, with a high near 100. South southeast wind 5 to 10 mph.
Saturday Night
Mostly clear, with a low around 79. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.
Sunday
Mostly sunny and hot, with a high near 99. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Sunday Night
Mostly clear, with a low around 78. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.
Monday
Mostly sunny and hot, with a high near 99.
Monday Night
Mostly clear, with a low around 78.
Tuesday
Mostly sunny, with a high near 98.
Tuesday Night
Mostly clear, with a low around 77.
Wednesday
Mostly sunny, with a high near 97.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
San Antonio TX
 29.46°N 98.5°W (Elev. 741 ft)
Last Update:
11:32 pm CDT Sep 9, 2026
Forecast Valid:
12am CDT Sep 10, 2026-6pm CDT Sep 16, 2026
 
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