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

81°F

27°C

Humidity 77%
Wind Speed S 7 mph
Barometer 30.05 in (1015.6 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 26 Aug 8:51 am CDT
Extended Forecast for

Alamo Heights TX

Heat Advisory August 26, 09:24am until August 26, 07:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 26, 09:24am until August 26, 07:00pm

    NOW until 7:00pm Wed

    Heat Advisory

  • Today

    High: 103 °F

    Hot

  • Tonight

    Tonight: Partly cloudy, with a low around 78. South southwest wind around 5 mph.

    Low: 78 °F

    Partly Cloudy

  • Thursday

    Thursday: A slight chance of showers between 10am and 1pm, then a chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 101. Heat index values as high as 105. Calm wind becoming east southeast around 5 mph in the afternoon. Chance of precipitation is 30%.

    High: 101 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 78. East wind around 5 mph becoming south after midnight. Chance of precipitation is 40%.

    Low: 78 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday

    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.

    High: 99 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

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

    Low: 77 °F

    Mostly Clear

  • Saturday

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

    High: 99 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 76. South southeast wind 5 to 10 mph.

    Low: 76 °F

    Mostly Clear

Detailed Forecast

Today
Sunny and hot, with a high near 103. Southwest wind around 5 mph becoming southeast in the afternoon.
Tonight
Partly cloudy, with a low around 78. South southwest wind around 5 mph.
Thursday
A slight chance of showers between 10am and 1pm, then a chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 101. Heat index values as high as 105. Calm wind becoming east southeast around 5 mph in the afternoon. Chance of precipitation is 30%.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 78. East wind around 5 mph becoming south after midnight. Chance of precipitation is 40%.
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 77. South wind 5 to 10 mph.
Saturday
Sunny and hot, with a high near 99. Calm wind becoming east southeast around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 76. South southeast wind 5 to 10 mph.
Sunday
Sunny and hot, with a high near 99. South wind 5 to 10 mph.
Sunday Night
Clear, with a low around 76.
Monday
Mostly sunny and hot, with a high near 99.
Monday Night
Mostly clear, with a low around 76.
Tuesday
Mostly sunny and hot, with a high near 99.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Alamo Heights TX
 29.48°N 98.48°W (Elev. 699 ft)
Last Update:
6:42 am CDT Aug 26, 2026
Forecast Valid:
9am CDT Aug 26, 2026-6pm CDT Sep 1, 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