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 82%
Wind Speed S 12 mph
Barometer 30.03 in (1014.8 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 31 Jul 6:51 am CDT
Extended Forecast for

Kirby TXSimilar City Names

  • Today

    Today: Cloudy through mid morning, then gradual clearing and hot, with a high near 99. Heat index values as high as 107. South wind 5 to 10 mph.

    High: 99 °F

    Hot

  • Tonight

    Tonight: 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

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after 4pm. Sunny and hot, with a high near 99. Heat index values as high as 107. South southwest wind around 5 mph becoming calm.

    High: 99 °F

    Sunny then
    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Increasing clouds, with a low around 79. Southeast wind around 5 mph becoming west southwest after midnight. Chance of precipitation is 20%.

    Low: 79 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Sunday

    Sunday: Mostly sunny and hot, with a high near 99. North northwest wind around 5 mph becoming east northeast in the afternoon.

    High: 99 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 79. East northeast wind 5 to 10 mph becoming south southwest after midnight.

    Low: 79 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 99. Southwest wind around 5 mph becoming southeast in the afternoon.

    High: 99 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 78. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 78 °F

    Mostly Clear

  • Tuesday

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

    High: 99 °F

    Hot

Detailed Forecast

Today
Cloudy through mid morning, then gradual clearing and hot, with a high near 99. Heat index values as high as 107. South wind 5 to 10 mph.
Tonight
Mostly clear, with a low around 76. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.
Saturday
A 20 percent chance of showers and thunderstorms after 4pm. Sunny and hot, with a high near 99. Heat index values as high as 107. South southwest wind around 5 mph becoming calm.
Saturday Night
A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Increasing clouds, with a low around 79. Southeast wind around 5 mph becoming west southwest after midnight. Chance of precipitation is 20%.
Sunday
Mostly sunny and hot, with a high near 99. North northwest wind around 5 mph becoming east northeast in the afternoon.
Sunday Night
Mostly clear, with a low around 79. East northeast wind 5 to 10 mph becoming south southwest after midnight.
Monday
Sunny and hot, with a high near 99. Southwest wind around 5 mph becoming southeast in the afternoon.
Monday Night
Mostly clear, with a low around 78. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.
Tuesday
Sunny and hot, with a high near 99. South wind 5 to 10 mph.
Tuesday Night
Mostly clear, with a low around 77.
Wednesday
Mostly sunny, with a high near 97.
Wednesday Night
Mostly clear, with a low around 77.
Thursday
Mostly sunny, with a high near 96.
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ABOUT THIS FORECAST

 
Point Forecast:
Kirby TXSimilar City Names
 29.46°N 98.37°W (Elev. 728 ft)
Last Update:
6:42 am CDT Jul 31, 2026
Forecast Valid:
7am CDT Jul 31, 2026-6pm CDT Aug 6, 2026
 
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Additional Resources

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