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

85°F

29°C

Humidity 70%
Wind Speed S 12 mph
Barometer 30.15 in (1018.8 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index93°F (34°C)
Last update 9 Sep 9:51 am CDT
Extended Forecast for

San Antonio TX

  • Today

    Today: Mostly sunny, with a high near 98. Heat index values as high as 105. Southeast wind around 5 mph.

    High: 98 °F

    Mostly Sunny

  • Tonight

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

    Low: 78 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 97. Heat index values as high as 104. Calm wind becoming south around 5 mph in the afternoon.

    High: 97 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 77. South southeast wind 5 to 10 mph.

    Low: 77 °F

    Partly Cloudy

  • Friday

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

    High: 99 °F

    Hot

  • Friday Night

    Friday 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

  • Saturday

    Saturday: Sunny and hot, with a high near 100. South southeast wind 5 to 10 mph.

    High: 100 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 79. Southeast wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 79 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny and hot, with a high near 99. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 99 °F

    Hot

Detailed Forecast

Today
Mostly sunny, with a high near 98. Heat index values as high as 105. Southeast wind around 5 mph.
Tonight
Partly cloudy, with a low around 78. East southeast wind 5 to 10 mph becoming light southeast after midnight.
Thursday
Mostly sunny, with a high near 97. Heat index values as high as 104. Calm wind becoming south around 5 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 77. South southeast wind 5 to 10 mph.
Friday
Mostly sunny and hot, with a high near 99. South southeast wind 5 to 10 mph.
Friday Night
Partly cloudy, with a low around 78. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday
Sunny and hot, with a high near 100. South southeast wind 5 to 10 mph.
Saturday Night
Mostly clear, with a low around 79. Southeast wind 10 to 15 mph, with gusts as high as 20 mph.
Sunday
Mostly sunny and hot, with a high near 99. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.
Sunday Night
Partly cloudy, with a low around 78.
Monday
Mostly sunny and hot, with a high near 99.
Monday Night
Mostly clear, with a low around 78.
Tuesday
Mostly sunny and hot, with a high near 99.
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ABOUT THIS FORECAST

 
Point Forecast:
San Antonio TX
 29.44°N 98.5°W (Elev. 650 ft)
Last Update:
6:42 am CDT Sep 9, 2026
Forecast Valid:
10am CDT Sep 9, 2026-6pm CDT Sep 15, 2026
 
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Additional Resources

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