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

98°F

37°C

Humidity 28%
Wind Speed E 8 mph
Barometer 29.83 in (1008.1 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Heat Index98°F (37°C)
Last update 3 Aug 5:51 pm CDT
Extended Forecast for

San Antonio TX

  • Tonight

    Tonight: Mostly clear, with a low around 77. South southeast wind 5 to 10 mph.

    Low: 77 °F

    Mostly Clear

  • Tuesday

    Tuesday: Partly sunny, then gradually becoming sunny and hot, with a high near 99. Heat index values as high as 107. South southeast wind 5 to 10 mph.

    High: 99 °F

    Hot

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 77. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 77 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Mostly cloudy through mid morning, then gradual clearing, with a high near 98. Heat index values as high as 105. South southeast wind 5 to 10 mph.

    High: 98 °F

    Becoming
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 77. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 77 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 98. South southeast wind around 5 mph.

    High: 98 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 77. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 77 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 96. South southeast wind around 5 mph.

    High: 96 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 76. East southeast wind 5 to 10 mph.

    Low: 76 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 77. South southeast wind 5 to 10 mph.
Tuesday
Partly sunny, then gradually becoming sunny and hot, with a high near 99. Heat index values as high as 107. South southeast wind 5 to 10 mph.
Tuesday Night
Increasing clouds, with a low around 77. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.
Wednesday
Mostly cloudy through mid morning, then gradual clearing, with a high near 98. Heat index values as high as 105. South southeast wind 5 to 10 mph.
Wednesday Night
Mostly clear, with a low around 77. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday
Mostly sunny, with a high near 98. South southeast wind around 5 mph.
Thursday Night
Mostly clear, with a low around 77. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Friday
Mostly sunny, with a high near 96. South southeast wind around 5 mph.
Friday Night
Partly cloudy, with a low around 76. East southeast wind 5 to 10 mph.
Saturday
Mostly sunny, with a high near 96.
Saturday Night
Mostly clear, with a low around 77.
Sunday
Mostly sunny, with a high near 95.
Sunday Night
Partly cloudy, with a low around 77.
Monday
Mostly sunny, with a high near 96.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
San Antonio TX
 29.46°N 98.5°W (Elev. 741 ft)
Last Update:
5:32 pm CDT Aug 3, 2026
Forecast Valid:
6pm CDT Aug 3, 2026-6pm CDT Aug 10, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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