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.

Mostly Cloudy

78°F

26°C

Humidity 87%
Wind Speed SE 9 mph
Barometer 30.03 in (1014.9 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 14 Jul 2:51 am CDT
Extended Forecast for

San Antonio International Airport TX

  • Overnight

    Overnight: A 20 percent chance of showers. Mostly cloudy, with a low around 75. South southeast wind around 5 mph.

    Low: 75 °F

    Slight Chance
    Showers

  • Monday

    Monday: A slight chance of showers, then a chance of showers and thunderstorms after 10am. Mostly cloudy, with a high near 92. Heat index values as high as 101. South southeast wind 5 to 10 mph. Chance of precipitation is 30%.

    High: 92 °F

    Chance
    T-storms

  • Monday Night

    Monday Night: A 30 percent chance of showers and thunderstorms, mainly before 7pm. Mostly cloudy, with a low around 76. East southeast wind 5 to 10 mph.

    Low: 76 °F

    Chance
    T-storms then
    Mostly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 95. Heat index values as high as 102. South southeast wind 5 to 10 mph.

    High: 95 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 76. South southeast wind 5 to 10 mph.

    Low: 76 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 96. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 96 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 74. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 74 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 96. South southeast wind 5 to 10 mph.

    High: 96 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 74. Southeast wind 5 to 10 mph.

    Low: 74 °F

    Partly Cloudy

Detailed Forecast

Overnight
A 20 percent chance of showers. Mostly cloudy, with a low around 75. South southeast wind around 5 mph.
Monday
A slight chance of showers, then a chance of showers and thunderstorms after 10am. Mostly cloudy, with a high near 92. Heat index values as high as 101. South southeast wind 5 to 10 mph. Chance of precipitation is 30%.
Monday Night
A 30 percent chance of showers and thunderstorms, mainly before 7pm. Mostly cloudy, with a low around 76. East southeast wind 5 to 10 mph.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 95. Heat index values as high as 102. South southeast wind 5 to 10 mph.
Tuesday Night
Mostly cloudy, with a low around 76. South southeast wind 5 to 10 mph.
Wednesday
Mostly sunny, with a high near 96. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday Night
Partly cloudy, with a low around 74. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday
Mostly sunny, with a high near 96. South southeast wind 5 to 10 mph.
Thursday Night
Partly cloudy, with a low around 74. Southeast wind 5 to 10 mph.
Friday
Mostly sunny, with a high near 95.
Friday Night
Partly cloudy, with a low around 75.
Saturday
Mostly sunny, with a high near 96.
Saturday Night
Partly cloudy, with a low around 76.
Sunday
Mostly sunny, with a high near 97.
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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:
3:00 am CDT Jul 14, 2025
Forecast Valid:
3am CDT Jul 14, 2025-6pm CDT Jul 20, 2025
 
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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