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

79°F

26°C

Humidity 22%
Wind Speed S 9 mph
Barometer 29.95 in (1012.8 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 13 Mar 3:51 pm CDT
Extended Forecast for

San Antonio International Airport TX

  • Tonight

    Tonight: Mostly clear, with a low around 53. South wind 5 to 10 mph becoming light after midnight.

    Low: 53 °F

    Mostly Clear

  • Saturday

    Saturday: Partly sunny, then gradually becoming sunny, with a high near 85. Light south wind increasing to 5 to 10 mph in the morning.

    High: 85 °F

    Becoming
    Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 63. South southeast wind around 10 mph.

    Low: 63 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Mostly cloudy, then gradually becoming sunny, with a high near 91. South wind 5 to 15 mph becoming west in the afternoon. Winds could gust as high as 20 mph.

    High: 91 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 42. Breezy, with a north wind 15 to 25 mph, with gusts as high as 40 mph.

    Low: 42 °F

    Mostly Clear
    then Mostly
    Clear and
    Breezy

  • Monday

    Monday: Mostly sunny, with a high near 59. North wind 10 to 15 mph, with gusts as high as 30 mph.

    High: 59 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 38. Northeast wind around 5 mph becoming east southeast after midnight.

    Low: 38 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 68. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 68 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 47. South southeast wind 5 to 10 mph.

    Low: 47 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 53. South wind 5 to 10 mph becoming light after midnight.
Saturday
Partly sunny, then gradually becoming sunny, with a high near 85. Light south wind increasing to 5 to 10 mph in the morning.
Saturday Night
Increasing clouds, with a low around 63. South southeast wind around 10 mph.
Sunday
Mostly cloudy, then gradually becoming sunny, with a high near 91. South wind 5 to 15 mph becoming west in the afternoon. Winds could gust as high as 20 mph.
Sunday Night
Mostly clear, with a low around 42. Breezy, with a north wind 15 to 25 mph, with gusts as high as 40 mph.
Monday
Mostly sunny, with a high near 59. North wind 10 to 15 mph, with gusts as high as 30 mph.
Monday Night
Mostly cloudy, with a low around 38. Northeast wind around 5 mph becoming east southeast after midnight.
Tuesday
Sunny, with a high near 68. South wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 47. South southeast wind 5 to 10 mph.
Wednesday
Sunny, with a high near 78.
Wednesday Night
Mostly clear, with a low around 54.
Thursday
Sunny, with a high near 83.
Thursday Night
Clear, with a low around 56.
Friday
Sunny, with a high near 88.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
San Antonio International Airport TX
 29.55°N 98.46°W (Elev. 751 ft)
Last Update:
2:46 pm CDT Mar 13, 2026
Forecast Valid:
4pm CDT Mar 13, 2026-6pm CDT Mar 20, 2026
 
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