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

77°F

25°C

Humidity 77%
Wind Speed SE 17 mph
Barometer 29.77 in (1006.3 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 23 Apr 8:51 pm CDT
Extended Forecast for

San Antonio International Airport TX

  • Tonight

    Tonight: Mostly cloudy, with a low around 70. South wind 5 to 10 mph.

    Low: 70 °F

    Mostly Cloudy

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 86. South wind around 5 mph.

    High: 86 °F

    Cloudy then
    Slight Chance
    T-storms

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms before 10pm. Increasing clouds, with a low around 70. Southeast wind around 5 mph.

    Low: 70 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 91. South wind around 5 mph.

    High: 91 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 70. South southeast wind around 5 mph.

    Low: 70 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 92. South wind 5 to 10 mph.

    High: 92 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 72. South southeast wind 5 to 10 mph.

    Low: 72 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 94. South southwest wind around 5 mph.

    High: 94 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 72. Southeast wind around 5 mph.

    Low: 72 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 70. South wind 5 to 10 mph.
Friday
A 20 percent chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 86. South wind around 5 mph.
Friday Night
A 20 percent chance of showers and thunderstorms before 10pm. Increasing clouds, with a low around 70. Southeast wind around 5 mph.
Saturday
Partly sunny, with a high near 91. South wind around 5 mph.
Saturday Night
Partly cloudy, with a low around 70. South southeast wind around 5 mph.
Sunday
Mostly cloudy, with a high near 92. South wind 5 to 10 mph.
Sunday Night
Mostly cloudy, with a low around 72. South southeast wind 5 to 10 mph.
Monday
Mostly cloudy, with a high near 94. South southwest wind around 5 mph.
Monday Night
Mostly cloudy, with a low around 72. Southeast wind around 5 mph.
Tuesday
Mostly cloudy, with a high near 96.
Tuesday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71.
Wednesday
Mostly cloudy, with a high near 93.
Wednesday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70.
Thursday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 90.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
San Antonio International Airport TX
 29.53°N 98.45°W (Elev. 771 ft)
Last Update:
6:44 pm CDT Apr 23, 2026
Forecast Valid:
9pm CDT Apr 23, 2026-6pm CDT Apr 30, 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