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 with Haze

80°F

27°C

Humidity 82%
Wind Speed SE 7 mph
Barometer 29.82 in (1008.9 mb)
Dewpoint 74°F (23°C)
Visibility 5.00 mi
Heat Index85°F (29°C)
Last update 27 Apr 1:53 pm CDT
Extended Forecast for

San Antonio, Stinson Municipal Airport TX

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 95. Heat index values as high as 101. South southeast wind 5 to 10 mph.

    High: 95 °F

    Mostly Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 75. Southeast wind 5 to 10 mph.

    Low: 75 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Cloudy, then gradual clearing during the afternoon, with a high near 97. Heat index values as high as 102. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 97 °F

    Clearing Late

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 74. South southeast wind 5 to 10 mph.

    Low: 74 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 92. Light southeast wind becoming east northeast 5 to 10 mph in the morning.

    High: 92 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69. Northeast wind around 10 mph, with gusts as high as 20 mph.

    Low: 69 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: A slight chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 1pm, then a slight chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 87. East wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    High: 87 °F

    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68. East wind around 15 mph, with gusts as high as 25 mph.

    Low: 68 °F

    Chance
    T-storms

  • Friday

    Friday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 79. East wind 15 to 20 mph becoming northwest in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 60%.

    High: 79 °F

    Showers
    Likely

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 95. Heat index values as high as 101. South southeast wind 5 to 10 mph.
Tonight
Increasing clouds, with a low around 75. Southeast wind 5 to 10 mph.
Tuesday
Cloudy, then gradual clearing during the afternoon, with a high near 97. Heat index values as high as 102. South wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday Night
Increasing clouds, with a low around 74. South southeast wind 5 to 10 mph.
Wednesday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 92. Light southeast wind becoming east northeast 5 to 10 mph in the morning.
Wednesday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69. Northeast wind around 10 mph, with gusts as high as 20 mph.
Thursday
A slight chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 1pm, then a slight chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 87. East wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Thursday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68. East wind around 15 mph, with gusts as high as 25 mph.
Friday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 79. East wind 15 to 20 mph becoming northwest in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 60%.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 57. Chance of precipitation is 40%.
Saturday
A 20 percent chance of showers. Partly sunny, with a high near 72.
Saturday Night
Partly cloudy, with a low around 53.
Sunday
Mostly sunny, with a high near 78.
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ABOUT THIS FORECAST

 
Point Forecast:
San Antonio, Stinson Municipal Airport TX
 29.35°N 98.48°W (Elev. 577 ft)
Last Update:
1:24 pm CDT Apr 27, 2026
Forecast Valid:
2pm CDT Apr 27, 2026-6pm CDT May 3, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation