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

84°F

29°C

Humidity 58%
Wind Speed SE 6 mph
Barometer 29.92 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 19 Sep 8:51 pm CDT
Extended Forecast for

San Antonio TX

  • Tonight

    Tonight: Partly cloudy, with a low around 75. South southeast wind around 5 mph.

    Low: 75 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 97. Heat index values as high as 103. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 97 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 76. South southeast wind around 5 mph becoming calm after midnight.

    Low: 76 °F

    Partly Cloudy

  • Monday

    Monday: Mostly cloudy, then gradually becoming sunny, with a high near 98. Heat index values as high as 104. Calm wind becoming east southeast around 5 mph in the afternoon.

    High: 98 °F

    Decreasing
    Clouds

  • Monday Night

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

    Low: 77 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 98. Light east wind increasing to 5 to 10 mph in the afternoon.

    High: 98 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 78. East wind 5 to 10 mph becoming light east southeast after midnight.

    Low: 78 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 98. North northeast wind 5 to 10 mph becoming east in the afternoon.

    High: 98 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 78. East wind 5 to 10 mph becoming light east southeast after midnight.

    Low: 78 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 75. South southeast wind around 5 mph.
Sunday
Mostly sunny, with a high near 97. Heat index values as high as 103. Calm wind becoming southeast around 5 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 76. South southeast wind around 5 mph becoming calm after midnight.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 98. Heat index values as high as 104. Calm wind becoming east southeast around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 77. Southeast wind around 5 mph becoming calm after midnight.
Tuesday
Sunny, with a high near 98. Light east wind increasing to 5 to 10 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 78. East wind 5 to 10 mph becoming light east southeast after midnight.
Wednesday
Mostly sunny, with a high near 98. North northeast wind 5 to 10 mph becoming east in the afternoon.
Wednesday Night
Partly cloudy, with a low around 78. East wind 5 to 10 mph becoming light east southeast after midnight.
Thursday
Mostly sunny, with a high near 97.
Thursday Night
Partly cloudy, with a low around 76.
Friday
Mostly sunny, with a high near 97.
Friday Night
Partly cloudy, with a low around 76.
Saturday
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:
6:44 pm CDT Sep 19, 2026
Forecast Valid:
11pm CDT Sep 19, 2026-6pm CDT Sep 26, 2026
 
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Additional Resources

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Chance of Precipitation