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

83°F

28°C

Humidity 63%
Wind Speed SE 9 mph
Barometer 29.98 in (1013.1 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 1 Sep 11:51 pm CDT
Extended Forecast for

San Antonio International Airport TX

  • Overnight

    Overnight: Mostly clear, with a low around 78. South wind around 5 mph.

    Low: 78 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 100. Heat index values as high as 104. South southwest wind around 5 mph.

    High: 100 °F

    Hot

  • Wednesday Night

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

    Low: 78 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny and hot, with a high near 100. Heat index values as high as 104. South wind 5 to 10 mph.

    High: 100 °F

    Hot

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 77. Southeast wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 77 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 97. South southeast wind around 5 mph.

    High: 97 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 76. East southeast wind 5 to 10 mph.

    Low: 76 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 98. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 98 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 77. Southeast wind 5 to 10 mph.

    Low: 77 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 78. South wind around 5 mph.
Wednesday
Sunny and hot, with a high near 100. Heat index values as high as 104. South southwest wind around 5 mph.
Wednesday Night
Partly cloudy, with a low around 78. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday
Mostly cloudy, then gradually becoming sunny and hot, with a high near 100. Heat index values as high as 104. South wind 5 to 10 mph.
Thursday Night
Partly cloudy, with a low around 77. Southeast wind 5 to 15 mph, with gusts as high as 20 mph.
Friday
Mostly sunny, with a high near 97. South southeast wind around 5 mph.
Friday Night
Partly cloudy, with a low around 76. East southeast wind 5 to 10 mph.
Saturday
Mostly sunny, with a high near 98. Calm wind becoming southeast around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 77. Southeast wind 5 to 10 mph.
Sunday
Sunny, with a high near 98.
Sunday Night
Mostly clear, with a low around 77.
Labor Day
Sunny, with a high near 98.
Monday Night
Mostly clear, with a low around 76.
Tuesday
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:
11:32 pm CDT Sep 1, 2026
Forecast Valid:
12am CDT Sep 2, 2026-6pm CDT Sep 8, 2026
 
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Additional Resources

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