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.

Partly Cloudy

81°F

27°C

Humidity 77%
Wind Speed SE 12 mph
Barometer 29.98 in (1013.1 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 19 Jul 11:51 pm CDT
Extended Forecast for

San Antonio TX

  • Overnight

    Overnight: Mostly cloudy, with a low around 74. Southeast wind 5 to 10 mph.

    Low: 74 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, then gradually becoming sunny, with a high near 96. Heat index values as high as 101. South wind around 5 mph.

    High: 96 °F

    Becoming
    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 72. Southeast wind around 5 mph becoming calm after midnight.

    Low: 72 °F

    Clear

  • Tuesday

    Tuesday: Partly sunny, then gradually becoming sunny, with a high near 96. Heat index values as high as 100. Calm wind becoming south around 5 mph.

    High: 96 °F

    Becoming
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 76. Southeast wind around 5 mph becoming calm in the evening.

    Low: 76 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 98. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 98 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 80. Southeast wind around 5 mph becoming southwest after midnight.

    Low: 80 °F

    Mostly Clear

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 97. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 97 °F

    Sunny then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: A 20 percent chance of showers. Mostly clear, with a low around 79. East southeast wind around 5 mph.

    Low: 79 °F

    Slight Chance
    Showers

Detailed Forecast

Overnight
Mostly cloudy, with a low around 74. Southeast wind 5 to 10 mph.
Monday
Partly sunny, then gradually becoming sunny, with a high near 96. Heat index values as high as 101. South wind around 5 mph.
Monday Night
Clear, with a low around 72. Southeast wind around 5 mph becoming calm after midnight.
Tuesday
Partly sunny, then gradually becoming sunny, with a high near 96. Heat index values as high as 100. Calm wind becoming south around 5 mph.
Tuesday Night
Mostly clear, with a low around 76. Southeast wind around 5 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 98. Calm wind becoming southeast around 5 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 80. Southeast wind around 5 mph becoming southwest after midnight.
Thursday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 97. Calm wind becoming southeast around 5 mph in the afternoon.
Thursday Night
A 20 percent chance of showers. Mostly clear, with a low around 79. East southeast wind around 5 mph.
Friday
A 20 percent chance of showers before 1pm. Sunny, with a high near 96.
Friday Night
Mostly clear, with a low around 78.
Saturday
Mostly sunny, with a high near 96.
Saturday Night
Mostly clear, with a low around 78.
Sunday
Mostly sunny, with a high near 95.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
San Antonio TX
 29.46°N 98.5°W (Elev. 741 ft)
Last Update:
11:32 pm CDT Jul 19, 2026
Forecast Valid:
12am CDT Jul 20, 2026-6pm CDT Jul 26, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation