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

94°F

34°C

Humidity 35%
Wind Speed S 7 mph
Barometer 29.93 in (1011.4 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Heat Index95°F (35°C)
Last update 26 Aug 8:51 pm CDT
Extended Forecast for

2 Miles ENE San Antonio International Airport TX

Heat Advisory August 26, 09:18pm until August 27, 07:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 26, 09:18pm until August 27, 07:00pm

    NOW until 7:00pm Thu

    Heat Advisory

  • Tonight

    Low: 79 °F

    Partly Cloudy

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny and hot, with a high near 100. Heat index values as high as 108. West southwest wind around 5 mph becoming calm.

    High: 100 °F

    Sunny then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Partly cloudy, with a low around 78. South southeast wind around 5 mph. Chance of precipitation is 30%.

    Low: 78 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Friday

    Friday: Mostly sunny and hot, with a high near 99. Heat index values as high as 109. Calm wind becoming east around 5 mph in the afternoon.

    High: 99 °F

    Hot

  • Friday Night

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

    Low: 77 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny and hot, with a high near 99. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 99 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 75. South southeast wind 5 to 10 mph.

    Low: 75 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 98. South wind 5 to 10 mph.

    High: 98 °F

    Sunny

Detailed Forecast

Tonight
Partly cloudy, with a low around 79. South wind around 5 mph.
Thursday
A 40 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny and hot, with a high near 100. Heat index values as high as 108. West southwest wind around 5 mph becoming calm.
Thursday Night
A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Partly cloudy, with a low around 78. South southeast wind around 5 mph. Chance of precipitation is 30%.
Friday
Mostly sunny and hot, with a high near 99. Heat index values as high as 109. Calm wind becoming east around 5 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 77. East southeast wind 5 to 10 mph becoming light south southeast after midnight.
Saturday
Sunny and hot, with a high near 99. Calm wind becoming southeast around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 75. South southeast wind 5 to 10 mph.
Sunday
Sunny, with a high near 98. South wind 5 to 10 mph.
Sunday Night
Mostly clear, with a low around 75. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Monday
Mostly sunny, with a high near 98.
Monday Night
Mostly clear, with a low around 75.
Tuesday
Mostly sunny and hot, with a high near 99.
Tuesday Night
Mostly clear, with a low around 75.
Wednesday
Mostly sunny and hot, with a high near 99.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ENE San Antonio International Airport TX
 29.55°N 98.43°W (Elev. 797 ft)
Last Update:
8:44 pm CDT Aug 26, 2026
Forecast Valid:
9pm CDT Aug 26, 2026-6pm CDT Sep 2, 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