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.

Mostly Cloudy

78°F

26°C

Humidity 79%
Wind Speed SE 12 mph
Barometer 29.83 in (1008.9 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 16 May 11:53 pm CDT
Extended Forecast for

San Antonio, Stinson Municipal Airport TX

  • Overnight

    Overnight: Mostly cloudy, with a low around 75. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 75 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 91. South southeast wind 10 to 20 mph, with gusts as high as 30 mph.

    High: 91 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 78. Southeast wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: 78 °F

    Slight Chance
    T-storms

  • Monday

    Monday: Partly sunny, with a high near 92. Heat index values as high as 101. South southeast wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 92 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 79. Southeast wind around 15 mph, with gusts as high as 25 mph.

    Low: 79 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 92. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 92 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Low around 75. Southeast wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.

    Low: 75 °F

    T-storms

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 87. Southeast wind 5 to 10 mph. Chance of precipitation is 70%.

    High: 87 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 73. East southeast wind 5 to 15 mph.

    Low: 73 °F

    Chance
    T-storms

Detailed Forecast

Overnight
Mostly cloudy, with a low around 75. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.
Sunday
Mostly cloudy, with a high near 91. South southeast wind 10 to 20 mph, with gusts as high as 30 mph.
Sunday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 78. Southeast wind 15 to 20 mph, with gusts as high as 30 mph.
Monday
Partly sunny, with a high near 92. Heat index values as high as 101. South southeast wind 15 to 20 mph, with gusts as high as 30 mph.
Monday Night
Mostly cloudy, with a low around 79. Southeast wind around 15 mph, with gusts as high as 25 mph.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 92. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday Night
Showers and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Low around 75. Southeast wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.
Wednesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 87. Southeast wind 5 to 10 mph. Chance of precipitation is 70%.
Wednesday Night
A 40 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 73. East southeast wind 5 to 15 mph.
Thursday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 84. Chance of precipitation is 70%.
Thursday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 69. Chance of precipitation is 70%.
Friday
Showers and thunderstorms likely. Mostly cloudy, with a high near 81. Chance of precipitation is 60%.
Friday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69.
Saturday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 83.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
San Antonio, Stinson Municipal Airport TX
 29.32°N 98.45°W (Elev. 531 ft)
Last Update:
12:42 am CDT May 17, 2026
Forecast Valid:
12am CDT May 17, 2026-6pm CDT May 23, 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