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

84°F

29°C

Humidity 65%
Wind Speed SE 17 G 26 mph
Barometer 29.97 in (1012.8 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 18 Jul 9:51 pm CDT
Extended Forecast for

San Antonio TX

  • Tonight

    Tonight: Mostly cloudy, with a low around 76. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 76 °F

    Mostly Cloudy

  • Sunday

    Sunday: Cloudy, then gradually becoming mostly sunny, with a high near 94. Heat index values as high as 101. South southeast wind 5 to 10 mph.

    High: 94 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 73. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 73 °F

    Partly Cloudy

  • Monday

    Monday: Mostly cloudy through mid morning, then gradual clearing, with a high near 95. Heat index values as high as 100. South southeast wind around 5 mph.

    High: 95 °F

    Becoming
    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 72. Southeast wind 5 to 10 mph.

    Low: 72 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 95. Calm wind becoming south southeast around 5 mph in the afternoon.

    High: 95 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 74. Southeast wind around 5 mph becoming calm after midnight.

    Low: 74 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 96. Calm wind becoming south southeast around 5 mph in the afternoon.

    High: 96 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 77. Southeast wind around 5 mph becoming calm after midnight.

    Low: 77 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 76. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Sunday
Cloudy, then gradually becoming mostly sunny, with a high near 94. Heat index values as high as 101. South southeast wind 5 to 10 mph.
Sunday Night
Partly cloudy, with a low around 73. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Monday
Mostly cloudy through mid morning, then gradual clearing, with a high near 95. Heat index values as high as 100. South southeast wind around 5 mph.
Monday Night
Clear, with a low around 72. Southeast wind 5 to 10 mph.
Tuesday
Sunny, with a high near 95. Calm wind becoming south southeast around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 74. Southeast wind around 5 mph becoming calm after midnight.
Wednesday
Sunny, with a high near 96. Calm wind becoming south southeast around 5 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 77. Southeast wind around 5 mph becoming calm after midnight.
Thursday
Sunny, with a high near 97.
Thursday Night
Mostly clear, with a low around 78.
Friday
Sunny, with a high near 97.
Friday Night
A 20 percent chance of showers. Mostly clear, with a low around 79.
Saturday
Sunny, with a high near 96.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
San Antonio TX
 29.46°N 98.5°W (Elev. 741 ft)
Last Update:
6:42 pm CDT Jul 18, 2026
Forecast Valid:
10pm CDT Jul 18, 2026-6pm CDT Jul 25, 2026
 
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Additional Resources

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Chance of Precipitation