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

80°F

27°C

Humidity 69%
Wind Speed S 5 mph
Barometer 29.93 in (1011.5 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 21 Sep 1:51 am CDT
Extended Forecast for

San Antonio TX

  • Overnight

    Overnight: Partly cloudy, with a low around 77. Calm wind becoming east around 5 mph.

    Low: 77 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 96. Calm wind becoming east around 5 mph in the afternoon.

    High: 96 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 76. East wind around 5 mph becoming calm after midnight.

    Low: 76 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 97. Light and variable wind becoming east 5 to 10 mph in the afternoon.

    High: 97 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Partly cloudy, with a low around 77. East wind 5 to 10 mph becoming light southeast after midnight. Chance of precipitation is 20%.

    Low: 77 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Wednesday

    Wednesday: Mostly sunny, with a high near 98. North northeast wind 5 to 10 mph becoming east in the afternoon.

    High: 98 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 77. East wind 5 to 10 mph becoming light southeast after midnight.

    Low: 77 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 97. East wind 5 to 10 mph.

    High: 97 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 76. East wind 5 to 10 mph becoming light southeast after midnight.

    Low: 76 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 77. Calm wind becoming east around 5 mph.
Monday
Mostly sunny, with a high near 96. Calm wind becoming east around 5 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 76. East wind around 5 mph becoming calm after midnight.
Tuesday
Mostly sunny, with a high near 97. Light and variable wind becoming east 5 to 10 mph in the afternoon.
Tuesday Night
A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Partly cloudy, with a low around 77. East wind 5 to 10 mph becoming light southeast after midnight. Chance of precipitation is 20%.
Wednesday
Mostly sunny, with a high near 98. North northeast wind 5 to 10 mph becoming east in the afternoon.
Wednesday Night
Partly cloudy, with a low around 77. East wind 5 to 10 mph becoming light southeast after midnight.
Thursday
Mostly sunny, with a high near 97. East wind 5 to 10 mph.
Thursday Night
Partly cloudy, with a low around 76. East wind 5 to 10 mph becoming light southeast after midnight.
Friday
Mostly sunny, with a high near 96.
Friday Night
Partly cloudy, with a low around 75.
Saturday
Mostly sunny, with a high near 96.
Saturday Night
Partly cloudy, with a low around 75.
Sunday
Mostly sunny, with a high near 97.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
San Antonio TX
 29.46°N 98.5°W (Elev. 741 ft)
Last Update:
1:24 am CDT Sep 21, 2026
Forecast Valid:
2am CDT Sep 21, 2026-6pm CDT Sep 27, 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