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.

Overcast

80°F

27°C

Humidity 85%
Wind Speed SE 12 mph
Barometer 29.86 in (1009.2 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 17 May 12:51 am CDT
Extended Forecast for

San Antonio TX

  • Overnight

    Overnight: Mostly cloudy, with a low around 77. South southeast wind around 5 mph.

    Low: 77 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 98. Heat index values as high as 105. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 98 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: A 20 percent chance of showers before 10pm. Mostly cloudy, with a low around 76. Southeast wind around 10 mph, with gusts as high as 20 mph.

    Low: 76 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 98. Heat index values as high as 104. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 98 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 77. Southeast wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 77 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 98. South wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 98 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 77. South southeast wind 5 to 15 mph, with gusts as high as 25 mph.

    Low: 77 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 99. South southeast wind around 5 mph becoming north northwest in the afternoon.

    High: 99 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 70. North northeast wind 5 to 10 mph.

    Low: 70 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 77. South southeast wind around 5 mph.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 98. Heat index values as high as 105. South wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday Night
A 20 percent chance of showers before 10pm. Mostly cloudy, with a low around 76. Southeast wind around 10 mph, with gusts as high as 20 mph.
Sunday
Partly sunny, with a high near 98. Heat index values as high as 104. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Partly cloudy, with a low around 77. Southeast wind 10 to 15 mph, with gusts as high as 25 mph.
Monday
Mostly sunny, with a high near 98. South wind 10 to 15 mph, with gusts as high as 25 mph.
Monday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 77. South southeast wind 5 to 15 mph, with gusts as high as 25 mph.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 99. South southeast wind around 5 mph becoming north northwest in the afternoon.
Tuesday Night
Partly cloudy, with a low around 70. North northeast wind 5 to 10 mph.
Wednesday
Mostly sunny, with a high near 94.
Wednesday Night
Partly cloudy, with a low around 68.
Thursday
Sunny, with a high near 93.
Thursday Night
Partly cloudy, with a low around 66.
Friday
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:
12:44 am CDT May 17, 2025
Forecast Valid:
1am CDT May 17, 2025-6pm CDT May 23, 2025
 
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Additional Resources

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Chance of Precipitation