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.

Fair

78°F

26°C

Humidity 82%
Wind Speed S 8 mph
Barometer 29.99 in (1013.4 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 27 Jul 3:51 am CDT
Extended Forecast for

San Antonio TX

  • Today

    Today: Sunny, with a high near 98. Heat index values as high as 103. South wind 5 to 10 mph.

    High: 98 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 76. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 76 °F

    Mostly Clear

  • Tuesday

    Tuesday: Partly sunny, then gradually becoming sunny and hot, with a high near 99. Heat index values as high as 105. South wind 5 to 10 mph.

    High: 99 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 78. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 78 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny and hot, with a high near 99. South wind 5 to 10 mph.

    High: 99 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 78. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 78 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny and hot, with a high near 100. South wind around 5 mph.

    High: 100 °F

    Hot

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 78. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 78 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny and hot, with a high near 100. South wind around 5 mph.

    High: 100 °F

    Hot

Detailed Forecast

Today
Sunny, with a high near 98. Heat index values as high as 103. South wind 5 to 10 mph.
Tonight
Mostly clear, with a low around 76. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.
Tuesday
Partly sunny, then gradually becoming sunny and hot, with a high near 99. Heat index values as high as 105. South wind 5 to 10 mph.
Tuesday Night
Mostly clear, with a low around 78. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.
Wednesday
Mostly sunny and hot, with a high near 99. South wind 5 to 10 mph.
Wednesday Night
Mostly clear, with a low around 78. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.
Thursday
Mostly sunny and hot, with a high near 100. South wind around 5 mph.
Thursday Night
Partly cloudy, with a low around 78. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Friday
Mostly sunny and hot, with a high near 100. South wind around 5 mph.
Friday Night
Partly cloudy, with a low around 80.
Saturday
Mostly sunny and hot, with a high near 100.
Saturday Night
Mostly clear, with a low around 82.
Sunday
Mostly sunny and hot, with a high near 99.
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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:
4:26 am CDT Jul 27, 2026
Forecast Valid:
4am CDT Jul 27, 2026-6pm CDT Aug 2, 2026
 
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Additional Resources

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