National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

San Antonio, San Antonio International Airport (KSAT)

Lat: 29.53°NLon: 98.46°WElev: 807ft.

Mostly Cloudy

99°F

37°C

Humidity 35%
Wind Speed N 15 G 23 mph
Barometer 29.90 in (1010.4 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Heat Index104°F (40°C)
Last update 1 Aug 3:51 pm CDT
Extended Forecast for

San Antonio TX

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms. Partly sunny and hot, with a high near 99. Heat index values as high as 109. North northeast wind around 5 mph.

    High: 99 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 10pm. Mostly cloudy, with a low around 79. North northeast wind around 5 mph becoming calm in the evening.

    Low: 79 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny and hot, with a high near 100. North northwest wind around 5 mph becoming east northeast in the afternoon.

    High: 100 °F

    Hot

  • Sunday Night

    Sunday Night: Clear, with a low around 78. East wind around 5 mph becoming calm in the evening.

    Low: 78 °F

    Clear

  • Monday

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

    High: 101 °F

    Hot

  • Monday Night

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

    Low: 78 °F

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

    Low: 77 °F

    Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 99. South wind around 5 mph.

    High: 99 °F

    Hot

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms. Partly sunny and hot, with a high near 99. Heat index values as high as 109. North northeast wind around 5 mph.
Tonight
A 20 percent chance of showers and thunderstorms before 10pm. Mostly cloudy, with a low around 79. North northeast wind around 5 mph becoming calm in the evening.
Sunday
Mostly sunny and hot, with a high near 100. North northwest wind around 5 mph becoming east northeast in the afternoon.
Sunday Night
Clear, with a low around 78. East wind around 5 mph becoming calm in the evening.
Monday
Sunny and hot, with a high near 101. Calm wind becoming south southeast around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 78. South wind 5 to 10 mph.
Tuesday
Sunny and hot, with a high near 100. South wind 5 to 10 mph.
Tuesday Night
Clear, with a low around 77. Southeast wind 5 to 15 mph, with gusts as high as 20 mph.
Wednesday
Sunny and hot, with a high near 99. South wind around 5 mph.
Wednesday Night
Mostly clear, with a low around 77.
Thursday
Mostly sunny, with a high near 98.
Thursday Night
Mostly clear, with a low around 77.
Friday
Mostly sunny, with a high near 97.
Friday Night
Mostly clear, with a low around 77.
Saturday
Mostly sunny, with a high near 97.
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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:
3:36 pm CDT Aug 1, 2026
Forecast Valid:
4pm CDT Aug 1, 2026-6pm CDT Aug 8, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation