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

Hazardous Weather Conditions

Current conditions at

San Antonio, Stinson Municipal Airport (KSSF)

Lat: 29.34°NLon: 98.47°WElev: 574ft.

Fair

91°F

33°C

Humidity 50%
Wind Speed NA
Barometer 30.03 in (1015.6 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index97°F (36°C)
Last update 25 Aug 11:53 am CDT
Extended Forecast for

3 Miles SSE San Antonio TX

Heat Advisory August 25, 12:22pm until August 26, 07:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 25, 12:22pm until August 26, 07:00pm

    NOW until 7:00pm Wed

    Heat Advisory

  • This Afternoon

    High: 103 °F

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 77. Southeast wind 5 to 10 mph becoming southwest after midnight. Winds could gust as high as 20 mph.

    Low: 77 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 103. Southwest wind around 5 mph becoming southeast in the afternoon.

    High: 103 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 79. South southeast wind around 5 mph.

    Low: 79 °F

    Mostly Clear

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 101. South southwest wind around 5 mph becoming calm.

    High: 101 °F

    Sunny then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: A 40 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 79. East northeast wind around 5 mph becoming south after midnight.

    Low: 79 °F

    Chance
    Showers

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 1pm. 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 78. Southeast wind 5 to 10 mph.

    Low: 78 °F

    Mostly Clear

Detailed Forecast

This Afternoon
Sunny and hot, with a high near 103. Southeast wind around 5 mph.
Tonight
Mostly clear, with a low around 77. Southeast wind 5 to 10 mph becoming southwest after midnight. Winds could gust as high as 20 mph.
Wednesday
Sunny and hot, with a high near 103. Southwest wind around 5 mph becoming southeast in the afternoon.
Wednesday Night
Mostly clear, with a low around 79. South southeast wind around 5 mph.
Thursday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 101. South southwest wind around 5 mph becoming calm.
Thursday Night
A 40 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 79. East northeast wind around 5 mph becoming south after midnight.
Friday
A 20 percent chance of showers and thunderstorms after 1pm. 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. Southeast wind 5 to 10 mph.
Saturday
Sunny, with a high near 98. Calm wind becoming east southeast around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 78.
Sunday
Sunny, with a high near 98.
Sunday Night
Clear, with a low around 77.
Monday
Sunny, with a high near 98.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE San Antonio TX
 29.41°N 98.48°W (Elev. 646 ft)
Last Update:
11:32 am CDT Aug 25, 2026
Forecast Valid:
12pm CDT Aug 25, 2026-6pm CDT Aug 31, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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