National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

San Antonio, San Antonio International Airport (KSAT)

Lat: 29.53°NLon: 98.46°WElev: 807ft.

Partly Cloudy

91°F

33°C

Humidity 38%
Wind Speed SW 9 G 18 mph
Barometer 30.03 in (1014.9 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Heat Index91°F (33°C)
Last update 24 Aug 11:51 am CDT
Extended Forecast for

San Antonio TX

Heat Advisory August 24, 11:59am until August 26, 07:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 24, 11:59am until August 26, 07:00pm

    NOW until 7:00pm Wed

    Heat Advisory

  • Today

    High: 102 °F

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 76. Southeast wind 5 to 15 mph.

    Low: 76 °F

    Mostly Clear

  • Tuesday

    Tuesday: Partly sunny, then gradually becoming sunny and hot, with a high near 102. South southwest wind around 5 mph.

    High: 102 °F

    Hot

  • Tuesday Night

    Tuesday Night: Clear, with a low around 77. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 77 °F

    Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 101. South southwest wind around 5 mph.

    High: 101 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 80. Southeast wind around 5 mph.

    Low: 80 °F

    Mostly Clear

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 101. Calm wind becoming east southeast around 5 mph in the afternoon.

    High: 101 °F

    Sunny then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 79. East wind around 5 mph becoming south southeast after midnight.

    Low: 79 °F

    Slight Chance
    T-storms

Detailed Forecast

Today
Sunny and hot, with a high near 102. South southeast wind 5 to 10 mph.
Tonight
Mostly clear, with a low around 76. Southeast wind 5 to 15 mph.
Tuesday
Partly sunny, then gradually becoming sunny and hot, with a high near 102. South southwest wind around 5 mph.
Tuesday Night
Clear, with a low around 77. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday
Sunny and hot, with a high near 101. South southwest wind around 5 mph.
Wednesday Night
Mostly clear, with a low around 80. Southeast wind around 5 mph.
Thursday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 101. Calm wind becoming east southeast around 5 mph in the afternoon.
Thursday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 79. East wind around 5 mph becoming south southeast after midnight.
Friday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 99. Calm wind becoming east around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 78.
Saturday
Sunny and hot, with a high near 99.
Saturday Night
Mostly clear, with a low around 77.
Sunday
Sunny and hot, with a high near 99.
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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:
11:32 am CDT Aug 24, 2026
Forecast Valid:
11am CDT Aug 24, 2026-6pm CDT Aug 30, 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