Current conditions at

San Antonio, Stinson Municipal Airport (KSSF)

Lat: 29.34°NLon: 98.47°WElev: 574ft.

Overcast

82°F

28°C

Humidity 79%
Wind Speed SE 5 mph
Barometer 29.91 in (1011.5 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 12 Sep 8:53 am CDT
Extended Forecast for

3 Miles SSE San Antonio TX

Heat Advisory September 12, 12:00pm until September 12, 07:00pm
Click here for hazard details and duration
Heat Advisory
  • Today

    Today: A 20 percent chance of showers and thunderstorms after 4pm.  Mostly sunny and hot, with a high near 102. Heat index values as high as 109. South wind 5 to 10 mph.

    High: 102 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 8pm.  Partly cloudy, with a low around 79. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.  Chance of precipitation is 20%.

    Low: 79 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny and hot, with a high near 101. Heat index values as high as 107. South southeast wind 5 to 10 mph.

    High: 101 °F

    Hot

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 78. Southeast wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 78 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny and hot, with a high near 100. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 100 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 78. Southeast wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 78 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 100. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 100 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 77. Southeast wind 5 to 15 mph, with gusts as high as 25 mph.

    Low: 77 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny and hot, with a high near 99. Southeast wind 5 to 10 mph.

    High: 99 °F

    Hot

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms after 4pm. Mostly sunny and hot, with a high near 102. Heat index values as high as 109. South wind 5 to 10 mph.
Tonight
A slight chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 8pm. Partly cloudy, with a low around 79. South southeast wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Sunday
Mostly sunny and hot, with a high near 101. Heat index values as high as 107. South southeast wind 5 to 10 mph.
Sunday Night
Partly cloudy, with a low around 78. Southeast wind 5 to 15 mph, with gusts as high as 20 mph.
Monday
Mostly sunny and hot, with a high near 100. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Monday Night
Mostly clear, with a low around 78. Southeast wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday
Sunny and hot, with a high near 100. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 77. Southeast wind 5 to 15 mph, with gusts as high as 25 mph.
Wednesday
Mostly sunny and hot, with a high near 99. Southeast wind 5 to 10 mph.
Wednesday Night
Mostly clear, with a low around 78.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 97.
Thursday Night
Partly cloudy, with a low around 77.
Friday
Mostly sunny, with a high near 96.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE San Antonio TX
 29.41°N 98.48°W (Elev. 646 ft)
9:44 am CDT Sep 12, 2026
9am CDT Sep 12, 2026-6pm CDT Sep 18, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database