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

87°F

31°C

Humidity 55%
Wind Speed E 5 mph
Barometer 29.87 in (1009.4 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index91°F (33°C)
Last update 6 Sep 8:51 pm CDT
Extended Forecast for

San Antonio International Airport TX

  • Tonight

    Tonight: Partly cloudy, with a low around 77. East wind around 5 mph becoming south after midnight.

    Low: 77 °F

    Partly Cloudy

  • Labor Day

    Labor Day: Mostly sunny, with a high near 98. Calm wind becoming south around 5 mph in the afternoon.

    High: 98 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 77. East wind around 5 mph becoming south after midnight.

    Low: 77 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly cloudy, then gradually becoming sunny and hot, with a high near 99. Heat index values as high as 105. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 99 °F

    Hot

  • Tuesday Night

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

    Low: 77 °F

    Mostly Clear

  • Wednesday

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

    High: 98 °F

    Mostly Sunny

  • Wednesday Night

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

    Low: 77 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 99. Calm wind becoming south around 5 mph in the afternoon.

    High: 99 °F

    Hot

  • Thursday Night

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

    Low: 77 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 77. East wind around 5 mph becoming south after midnight.
Labor Day
Mostly sunny, with a high near 98. Calm wind becoming south around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 77. East wind around 5 mph becoming south after midnight.
Tuesday
Mostly cloudy, then gradually becoming sunny and hot, with a high near 99. Heat index values as high as 105. Calm wind becoming southeast around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 77. South southeast wind 5 to 10 mph.
Wednesday
Mostly sunny, with a high near 98. Calm wind becoming southeast around 5 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 77. Southeast wind 5 to 10 mph.
Thursday
Sunny and hot, with a high near 99. Calm wind becoming south around 5 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 77. Southeast wind 5 to 10 mph.
Friday
Sunny and hot, with a high near 100.
Friday Night
Mostly clear, with a low around 77.
Saturday
Sunny and hot, with a high near 100.
Saturday Night
Mostly clear, with a low around 77.
Sunday
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:
6:44 pm CDT Sep 6, 2026
Forecast Valid:
9pm CDT Sep 6, 2026-6pm CDT Sep 13, 2026
 
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Additional Resources

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