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

89°F

32°C

Humidity 57%
Wind Speed SW 5 mph
Barometer 30.01 in (1014.1 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index96°F (36°C)
Last update 2 Sep 11:51 am CDT
Extended Forecast for

San Antonio TX

  • This Afternoon

    This Afternoon: Sunny and hot, with a high near 101. Heat index values as high as 105. South southeast wind around 5 mph.

    High: 101 °F

    Hot

  • Tonight

    Tonight: Partly cloudy, with a low around 78. Southeast wind 5 to 10 mph.

    Low: 78 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny and hot, with a high near 101. Heat index values as high as 106. South wind 5 to 10 mph.

    High: 101 °F

    Hot

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 78. Southeast wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 78 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny and hot, with a high near 99. Southeast wind around 5 mph.

    High: 99 °F

    Hot

  • Friday Night

    Friday Night: Partly cloudy, with a low around 77. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 77 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 98. Southeast wind around 5 mph.

    High: 98 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 78. Southeast wind 5 to 10 mph.

    Low: 78 °F

    Mostly Clear

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 98. Calm wind becoming east southeast around 5 mph in the afternoon.

    High: 98 °F

    Sunny then
    Slight Chance
    T-storms

Detailed Forecast

This Afternoon
Sunny and hot, with a high near 101. Heat index values as high as 105. South southeast wind around 5 mph.
Tonight
Partly cloudy, with a low around 78. Southeast wind 5 to 10 mph.
Thursday
Mostly sunny and hot, with a high near 101. Heat index values as high as 106. South wind 5 to 10 mph.
Thursday Night
Partly cloudy, with a low around 78. Southeast wind 5 to 15 mph, with gusts as high as 20 mph.
Friday
Mostly sunny and hot, with a high near 99. Southeast wind around 5 mph.
Friday Night
Partly cloudy, with a low around 77. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday
Sunny, with a high near 98. Southeast wind around 5 mph.
Saturday Night
Mostly clear, with a low around 78. Southeast wind 5 to 10 mph.
Sunday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 98. Calm wind becoming east southeast around 5 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 78.
Labor Day
Sunny, with a high near 98.
Monday Night
Mostly clear, with a low around 78.
Tuesday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 98.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
San Antonio TX
 29.44°N 98.5°W (Elev. 650 ft)
Last Update:
11:32 am CDT Sep 2, 2026
Forecast Valid:
12pm CDT Sep 2, 2026-6pm CDT Sep 8, 2026
 
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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