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.

A Few Clouds

75°F

24°C

Humidity 94%
Wind Speed SE 6 mph
Barometer 29.95 in (1012.1 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Last update 21 Jul 6:51 am CDT
Extended Forecast for

San Antonio International Airport TX

  • Today

    Today: 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

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 78. Southeast wind around 5 mph becoming calm in the evening.

    Low: 78 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 100. Heat index values as high as 107. Calm wind becoming east southeast around 5 mph in the afternoon.

    High: 100 °F

    Hot

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 83. East southeast wind around 5 mph becoming calm in the evening.

    Low: 83 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 98. Calm wind becoming east around 5 mph in the afternoon.

    High: 98 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 81. East wind 5 to 10 mph becoming light and variable after midnight.

    Low: 81 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 97. Calm wind becoming south southeast around 5 mph in the afternoon.

    High: 97 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 80. Southeast wind 5 to 10 mph.

    Low: 80 °F

    Mostly Clear

  • Saturday

    Saturday: A 20 percent chance of showers after 1pm. Sunny, with a high near 96. South wind around 5 mph.

    High: 96 °F

    Sunny then
    Slight Chance
    Showers

Detailed Forecast

Today
Sunny, with a high near 97. Heat index values as high as 103. Calm wind becoming southeast around 5 mph in the afternoon.
Tonight
Mostly clear, with a low around 78. Southeast wind around 5 mph becoming calm in the evening.
Wednesday
Sunny and hot, with a high near 100. Heat index values as high as 107. Calm wind becoming east southeast around 5 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 83. East southeast wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 98. Calm wind becoming east around 5 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 81. East wind 5 to 10 mph becoming light and variable after midnight.
Friday
Sunny, with a high near 97. Calm wind becoming south southeast around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 80. Southeast wind 5 to 10 mph.
Saturday
A 20 percent chance of showers after 1pm. Sunny, with a high near 96. South wind around 5 mph.
Saturday Night
A 20 percent chance of showers. Mostly clear, with a low around 80.
Sunday
A 20 percent chance of showers. Mostly sunny, with a high near 97.
Sunday Night
Mostly clear, with a low around 78.
Monday
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 98.45°W (Elev. 771 ft)
Last Update:
6:44 am CDT Jul 21, 2026
Forecast Valid:
7am CDT Jul 21, 2026-6pm CDT Jul 27, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation