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 61%
Wind Speed SE 7 mph
Barometer 29.96 in (1012.5 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index93°F (34°C)
Last update 4 Sep 12:51 pm CDT
Extended Forecast for

3 Miles E San Antonio International Airport TX

  • This Afternoon

    This Afternoon: A 20 percent chance of showers after 4pm. Mostly cloudy, with a high near 96. Heat index values as high as 104. East wind 5 to 10 mph.

    High: 96 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: A 10 percent chance of showers before 7pm. Mostly cloudy, with a low around 77. East wind 5 to 10 mph becoming south after midnight.

    Low: 77 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 97. Heat index values as high as 106. Calm wind becoming east around 5 mph in the afternoon.

    High: 97 °F

    Decreasing
    Clouds

  • Saturday Night

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

    Low: 77 °F

    Partly Cloudy

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 97. Calm wind becoming east southeast around 5 mph in the afternoon.

    High: 97 °F

    Sunny then
    Chance
    T-storms

  • Sunday Night

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

    Low: 77 °F

    Partly Cloudy

  • Labor Day

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

    High: 98 °F

    Mostly Sunny

  • Monday Night

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

    Low: 77 °F

    Mostly Clear

  • Tuesday

    Tuesday: A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 98. Light southeast wind increasing to 5 to 10 mph in the afternoon. Chance of precipitation is 20%.

    High: 98 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

Detailed Forecast

This Afternoon
A 20 percent chance of showers after 4pm. Mostly cloudy, with a high near 96. Heat index values as high as 104. East wind 5 to 10 mph.
Tonight
A 10 percent chance of showers before 7pm. Mostly cloudy, with a low around 77. East wind 5 to 10 mph becoming south after midnight.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 97. Heat index values as high as 106. Calm wind becoming east around 5 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 77. East wind 5 to 10 mph becoming light and variable after midnight.
Sunday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 97. Calm wind becoming east southeast around 5 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 77. East southeast wind 5 to 10 mph becoming light and variable after midnight.
Labor Day
Mostly sunny, with a high near 98. Calm wind becoming southeast around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 77. South southeast wind 5 to 10 mph.
Tuesday
A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 98. Light southeast wind increasing to 5 to 10 mph in the afternoon. Chance of precipitation is 20%.
Tuesday Night
Mostly clear, with a low around 76.
Wednesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 97.
Wednesday Night
Partly cloudy, with a low around 76.
Thursday
Mostly sunny, with a high near 96.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles E San Antonio International Airport TX
 29.53°N 98.43°W (Elev. 741 ft)
Last Update:
1:44 pm CDT Sep 4, 2026
Forecast Valid:
1pm CDT Sep 4, 2026-6pm CDT Sep 10, 2026
 
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Additional Resources

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Chance of Precipitation