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.

Fair

78°F

26°C

Humidity 79%
Wind Speed N 3 mph
Barometer 30.02 in (1014.3 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 28 Aug 1:51 am CDT
Extended Forecast for

Kirby TXSimilar City Names

  • Overnight

    Overnight: Mostly cloudy, with a low around 77. Calm wind.

    Low: 77 °F

    Mostly Cloudy

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 98. Heat index values as high as 105. Calm wind becoming west northwest around 5 mph in the afternoon.

    High: 98 °F

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: A chance of thunderstorms before 7pm. Mostly clear, with a low around 76. East southeast wind 5 to 10 mph becoming light and variable in the evening. Chance of precipitation is 30%.

    Low: 76 °F

    Chance
    T-storms then
    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 98. Heat index values as high as 105. Calm wind becoming east southeast around 5 mph in the afternoon.

    High: 98 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 75. East southeast wind 5 to 10 mph becoming south after midnight.

    Low: 75 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 98. Light south wind becoming southeast 5 to 10 mph in the afternoon.

    High: 98 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 75. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 75 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 99. South southeast wind 5 to 10 mph.

    High: 99 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 76. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 76 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 77. Calm wind.
Friday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 98. Heat index values as high as 105. Calm wind becoming west northwest around 5 mph in the afternoon.
Friday Night
A chance of thunderstorms before 7pm. Mostly clear, with a low around 76. East southeast wind 5 to 10 mph becoming light and variable in the evening. Chance of precipitation is 30%.
Saturday
Sunny, with a high near 98. Heat index values as high as 105. Calm wind becoming east southeast around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 75. East southeast wind 5 to 10 mph becoming south after midnight.
Sunday
Sunny, with a high near 98. Light south wind becoming southeast 5 to 10 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 75. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.
Monday
Sunny and hot, with a high near 99. South southeast wind 5 to 10 mph.
Monday Night
Mostly clear, with a low around 76. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.
Tuesday
Sunny and hot, with a high near 99.
Tuesday Night
Mostly clear, with a low around 76.
Wednesday
Sunny and hot, with a high near 99.
Wednesday Night
Mostly clear, with a low around 76.
Thursday
Mostly sunny and hot, with a high near 99.
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ABOUT THIS FORECAST

 
Point Forecast:
Kirby TXSimilar City Names
 29.46°N 98.37°W (Elev. 728 ft)
Last Update:
1:28 am CDT Aug 28, 2026
Forecast Valid:
1am CDT Aug 28, 2026-6pm CDT Sep 3, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation