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.

Overcast

80°F

27°C

Humidity 82%
Wind Speed SE 20 G 30 mph
Barometer 29.74 in (1005.8 mb)
Dewpoint 74°F (23°C)
Visibility 9.00 mi
Heat Index85°F (29°C)
Last update 17 May 10:53 pm CDT
Extended Forecast for

San Antonio, Stinson Municipal Airport TX

  • Tonight

    Tonight: Mostly cloudy, with a low around 78. South southeast wind around 15 mph, with gusts as high as 25 mph.

    Low: 78 °F

    Mostly Cloudy

  • Monday

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

    High: 92 °F

    Partly Sunny

  • Monday Night

    Monday Night: A 20 percent chance of showers and thunderstorms before 10pm. Mostly cloudy, with a low around 78. Southeast wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 78 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 91. Heat index values as high as 101. Southeast wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 91 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 74. East southeast wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.

    Low: 74 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 87. East wind around 10 mph, with gusts as high as 20 mph.

    High: 87 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72. East southeast wind 5 to 10 mph.

    Low: 72 °F

    Chance
    T-storms

  • Thursday

    Thursday: Showers and possibly a thunderstorm. High near 83. East southeast wind 5 to 10 mph. Chance of precipitation is 80%.

    High: 83 °F

    Showers
    Likely then
    T-storms

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 70. East wind 5 to 10 mph. Chance of precipitation is 80%.

    Low: 70 °F

    Heavy Rain

Detailed Forecast

Tonight
Mostly cloudy, with a low around 78. South southeast wind around 15 mph, with gusts as high as 25 mph.
Monday
Partly sunny, with a high near 92. Heat index values as high as 101. South southeast wind around 15 mph, with gusts as high as 30 mph.
Monday Night
A 20 percent chance of showers and thunderstorms before 10pm. Mostly cloudy, with a low around 78. Southeast wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 91. Heat index values as high as 101. Southeast wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 74. East southeast wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Wednesday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 87. East wind around 10 mph, with gusts as high as 20 mph.
Wednesday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72. East southeast wind 5 to 10 mph.
Thursday
Showers and possibly a thunderstorm. High near 83. East southeast wind 5 to 10 mph. Chance of precipitation is 80%.
Thursday Night
Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 70. East wind 5 to 10 mph. Chance of precipitation is 80%.
Friday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 82. Chance of precipitation is 70%.
Friday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 69. Chance of precipitation is 60%.
Saturday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 83.
Saturday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70.
Sunday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 84.
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ABOUT THIS FORECAST

 
Point Forecast:
San Antonio, Stinson Municipal Airport TX
 29.32°N 98.47°W (Elev. 581 ft)
Last Update:
11:32 pm CDT May 17, 2026
Forecast Valid:
11pm CDT May 17, 2026-6pm CDT May 24, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation