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

86°F

30°C

Humidity 55%
Wind Speed S 12 mph
Barometer 29.99 in (1013.4 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 27 Sep 10:51 am CDT
Extended Forecast for

San Antonio TX

  • Today

    Today: Partly sunny, with a high near 96. Heat index values as high as 101. South southwest wind around 5 mph becoming east southeast in the afternoon.

    High: 96 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 76. South southeast wind around 5 mph.

    Low: 76 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 96. Heat index values as high as 101. Light east wind becoming east southeast 5 to 10 mph in the afternoon.

    High: 96 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 75. Southeast wind around 10 mph, with gusts as high as 20 mph.

    Low: 75 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 93. Southeast wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 93 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 76. Southeast wind around 15 mph, with gusts as high as 25 mph.

    Low: 76 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 93. South southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.

    High: 93 °F

    Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 75. Southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.

    Low: 75 °F

    Chance
    T-storms then
    Showers
    Likely

  • Thursday

    Thursday: Showers and possibly a thunderstorm. High near 88. South southeast wind 5 to 10 mph. Chance of precipitation is 80%.

    High: 88 °F

    Showers

Detailed Forecast

Today
Partly sunny, with a high near 96. Heat index values as high as 101. South southwest wind around 5 mph becoming east southeast in the afternoon.
Tonight
Mostly cloudy, with a low around 76. South southeast wind around 5 mph.
Monday
Mostly sunny, with a high near 96. Heat index values as high as 101. Light east wind becoming east southeast 5 to 10 mph in the afternoon.
Monday Night
Mostly cloudy, with a low around 75. Southeast wind around 10 mph, with gusts as high as 20 mph.
Tuesday
Mostly cloudy, with a high near 93. Southeast wind 5 to 15 mph, with gusts as high as 20 mph.
Tuesday Night
A 20 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 76. Southeast wind around 15 mph, with gusts as high as 25 mph.
Wednesday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 93. South southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.
Wednesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 75. Southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.
Thursday
Showers and possibly a thunderstorm. High near 88. South southeast wind 5 to 10 mph. Chance of precipitation is 80%.
Thursday Night
Showers likely and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 72. Chance of precipitation is 70%.
Friday
Showers and thunderstorms likely. Mostly cloudy, with a high near 84. Chance of precipitation is 60%.
Friday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70.
Saturday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 84.
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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 am CDT Sep 27, 2026
Forecast Valid:
11am CDT Sep 27, 2026-6pm CDT Oct 3, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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