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

San Antonio, Stinson Municipal Airport (KSSF)

Lat: 29.34°NLon: 98.47°WElev: 574ft.

Fair

77°F

25°C

Humidity 88%
Wind Speed S 6 mph
Barometer 30.00 in (1014.4 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 28 Aug 5:53 am CDT
Extended Forecast for

4 Miles E San Antonio, Stinson Municipal Airport TX

  • Today

    Today: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 99. Heat index values as high as 105. Calm wind becoming northeast around 5 mph in the afternoon.

    High: 99 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 10pm. Mostly clear, with a low around 75. East southeast wind 5 to 10 mph becoming light and variable after midnight. Chance of precipitation is 30%.

    Low: 75 °F

    Chance
    T-storms then
    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 99. Heat index values as high as 104. Light and variable wind becoming east southeast 5 to 10 mph in the afternoon.

    High: 99 °F

    Hot

  • Saturday Night

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

    Low: 75 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 99. Light south wind becoming southeast 5 to 10 mph in the morning.

    High: 99 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 75. Southeast wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 75 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 100. South southeast wind 5 to 10 mph.

    High: 100 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 75. Southeast wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 75 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 100. South southeast wind 5 to 10 mph.

    High: 100 °F

    Hot

Detailed Forecast

Today
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 99. Heat index values as high as 105. Calm wind becoming northeast around 5 mph in the afternoon.
Tonight
A chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 10pm. Mostly clear, with a low around 75. East southeast wind 5 to 10 mph becoming light and variable after midnight. Chance of precipitation is 30%.
Saturday
Sunny and hot, with a high near 99. Heat index values as high as 104. Light and variable wind becoming east southeast 5 to 10 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 75. South wind 5 to 10 mph.
Sunday
Sunny and hot, with a high near 99. Light south wind becoming southeast 5 to 10 mph in the morning.
Sunday Night
Mostly clear, with a low around 75. Southeast wind 5 to 15 mph, with gusts as high as 20 mph.
Monday
Sunny and hot, with a high near 100. South southeast wind 5 to 10 mph.
Monday Night
Mostly clear, with a low around 75. Southeast wind 5 to 15 mph, with gusts as high as 20 mph.
Tuesday
Sunny and hot, with a high near 100. South southeast wind 5 to 10 mph.
Tuesday Night
Mostly clear, with a low around 75.
Wednesday
Sunny and hot, with a high near 100.
Wednesday Night
Mostly clear, with a low around 75.
Thursday
Sunny and hot, with a high near 100.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles E San Antonio, Stinson Municipal Airport TX
 29.32°N 98.42°W (Elev. 541 ft)
Last Update:
6:42 am CDT Aug 28, 2026
Forecast Valid:
6am CDT Aug 28, 2026-6pm CDT Sep 3, 2026
 
Forecast Discussion
 
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Additional Resources

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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