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

San Antonio, San Antonio International Airport (KSAT)

Lat: 29.53°NLon: 98.46°WElev: 807ft.

Overcast with Haze

83°F

28°C

Humidity 70%
Wind Speed SE 14 mph
Barometer 29.81 in (1007.7 mb)
Dewpoint 72°F (22°C)
Visibility 5.00 mi
Heat Index88°F (31°C)
Last update 27 Apr 8:51 pm CDT
Extended Forecast for

San Antonio TX

  • Tonight

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

    Low: 75 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Cloudy, then gradually becoming mostly sunny, with a high near 94. Heat index values as high as 102. South wind 5 to 10 mph.

    High: 94 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 73. Southeast wind 5 to 10 mph.

    Low: 73 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 92. Calm wind becoming east northeast around 5 mph in the afternoon.

    High: 92 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 68. Northeast wind 5 to 10 mph.

    Low: 68 °F

    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 84. East wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    High: 84 °F

    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69. East wind around 15 mph, with gusts as high as 20 mph.

    Low: 69 °F

    Chance
    T-storms

  • Friday

    Friday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 80. East wind 10 to 15 mph becoming north northwest in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 60%.

    High: 80 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 56. North wind around 20 mph, with gusts as high as 35 mph. Chance of precipitation is 40%.

    Low: 56 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Increasing clouds, with a low around 75. Southeast wind 5 to 10 mph.
Tuesday
Cloudy, then gradually becoming mostly sunny, with a high near 94. Heat index values as high as 102. South wind 5 to 10 mph.
Tuesday Night
Increasing clouds, with a low around 73. Southeast wind 5 to 10 mph.
Wednesday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 92. Calm wind becoming east northeast around 5 mph in the afternoon.
Wednesday Night
A 30 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 68. Northeast wind 5 to 10 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 84. East wind 5 to 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 69. East wind around 15 mph, with gusts as high as 20 mph.
Friday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 80. East wind 10 to 15 mph becoming north 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. Mostly cloudy, with a low around 56. North wind around 20 mph, with gusts as high as 35 mph. Chance of precipitation is 40%.
Saturday
A 20 percent chance of showers before 1pm. Partly sunny, with a high near 71.
Saturday Night
Partly cloudy, with a low around 52.
Sunday
Mostly sunny, with a high near 76.
Sunday Night
Partly cloudy, with a low around 55.
Monday
Mostly sunny, with a high near 83.
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ABOUT THIS FORECAST

 
Point Forecast:
San Antonio TX
 29.46°N 98.5°W (Elev. 741 ft)
Last Update:
6:42 pm CDT Apr 27, 2026
Forecast Valid:
9pm CDT Apr 27, 2026-6pm CDT May 4, 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