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.

A Few Clouds

81°F

27°C

Humidity 72%
Wind Speed SE 12 mph
Barometer 29.98 in (1013.1 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 1 Aug 12:51 am CDT
Extended Forecast for

San Antonio International Airport TX

  • Overnight

    Overnight: Mostly clear, with a low around 77. South wind around 5 mph.

    Low: 77 °F

    Mostly Clear

  • Saturday

    Saturday: A slight chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly sunny and hot, with a high near 99. Heat index values as high as 107. South southwest wind around 5 mph becoming calm. Chance of precipitation is 30%.

    High: 99 °F

    Mostly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms, mainly before 7pm. Mostly cloudy, with a low around 79. North northeast wind around 5 mph becoming calm in the evening.

    Low: 79 °F

    Chance
    Showers then
    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, then gradually becoming sunny and hot, with a high near 99. Heat index values as high as 104. Calm wind becoming west northwest around 5 mph.

    High: 99 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 78. East southeast wind around 5 mph becoming south southwest after midnight.

    Low: 78 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 101. West southwest wind around 5 mph becoming south southeast in the afternoon.

    High: 101 °F

    Hot

  • Monday Night

    Monday Night: Clear, with a low around 78. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 78 °F

    Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 100. South wind 5 to 10 mph.

    High: 100 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 77. Southeast wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 77 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 77. South wind around 5 mph.
Saturday
A slight chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly sunny and hot, with a high near 99. Heat index values as high as 107. South southwest wind around 5 mph becoming calm. Chance of precipitation is 30%.
Saturday Night
A 30 percent chance of showers and thunderstorms, mainly before 7pm. Mostly cloudy, with a low around 79. North northeast wind around 5 mph becoming calm in the evening.
Sunday
Mostly cloudy, then gradually becoming sunny and hot, with a high near 99. Heat index values as high as 104. Calm wind becoming west northwest around 5 mph.
Sunday Night
Mostly clear, with a low around 78. East southeast wind around 5 mph becoming south southwest after midnight.
Monday
Sunny and hot, with a high near 101. West southwest wind around 5 mph becoming south southeast in the afternoon.
Monday Night
Clear, with a low around 78. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday
Sunny and hot, with a high near 100. South wind 5 to 10 mph.
Tuesday Night
Mostly clear, with a low around 77. Southeast wind 5 to 15 mph, with gusts as high as 20 mph.
Wednesday
Sunny, with a high near 98.
Wednesday Night
Mostly clear, with a low around 77.
Thursday
Mostly sunny, with a high near 97.
Thursday Night
Partly cloudy, with a low around 77.
Friday
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:
12:44 am CDT Aug 1, 2026
Forecast Valid:
1am CDT Aug 1, 2026-6pm CDT Aug 7, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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