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

94°F

34°C

Humidity 37%
Wind Speed E 7 mph
Barometer 29.88 in (1009.8 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Heat Index96°F (36°C)
Last update 20 Sep 3:51 pm CDT
Extended Forecast for

San Antonio TX

  • Tonight

    Tonight: Partly cloudy, with a low around 77. South southeast wind around 5 mph.

    Low: 77 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 97. Heat index values as high as 101. Calm wind becoming east around 5 mph in the afternoon.

    High: 97 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 77. East wind around 5 mph becoming calm after midnight.

    Low: 77 °F

    Partly Cloudy

  • Tuesday

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

    High: 98 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers before 1am. Partly cloudy, with a low around 77. East wind 5 to 10 mph becoming light after midnight.

    Low: 77 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: Mostly sunny, with a high near 97. Light and variable wind becoming east 5 to 10 mph in the morning.

    High: 97 °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

  • Thursday

    Thursday: Mostly sunny, with a high near 97. East wind 5 to 10 mph.

    High: 97 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 77. East wind 5 to 10 mph becoming light southeast after midnight.

    Low: 77 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 77. South southeast wind around 5 mph.
Monday
Mostly sunny, with a high near 97. Heat index values as high as 101. Calm wind becoming east around 5 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 77. East wind around 5 mph becoming calm after midnight.
Tuesday
Mostly sunny, with a high near 98. Calm wind becoming east southeast around 5 mph in the afternoon.
Tuesday Night
A 20 percent chance of showers before 1am. Partly cloudy, with a low around 77. East wind 5 to 10 mph becoming light after midnight.
Wednesday
Mostly sunny, with a high near 97. Light and variable wind becoming east 5 to 10 mph in the morning.
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. East wind 5 to 10 mph.
Thursday Night
Partly cloudy, with a low around 77. East wind 5 to 10 mph becoming light southeast after midnight.
Friday
Mostly sunny, with a high near 96.
Friday Night
Partly cloudy, with a low around 76.
Saturday
Mostly sunny, with a high near 96.
Saturday Night
Partly cloudy, with a low around 76.
Sunday
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
 29.44°N 98.5°W (Elev. 650 ft)
Last Update:
3:14 pm CDT Sep 20, 2026
Forecast Valid:
4pm CDT Sep 20, 2026-6pm CDT Sep 27, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation