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

89°F

32°C

Humidity 43%
Wind Speed S 14 G 22 mph
Barometer 29.82 in (1007.8 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Heat Index90°F (32°C)
Last update 17 Apr 3:51 pm CDT
Extended Forecast for

San Antonio TX

  • Tonight

    Tonight: Mostly cloudy, with a low around 67. South southeast wind 5 to 15 mph, with gusts as high as 25 mph.

    Low: 67 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms, mainly after 4pm. Cloudy, with a temperature rising to near 74 by 10am, then falling to around 63 during the remainder of the day. East southeast wind 5 to 10 mph becoming north northeast 10 to 15 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 74 °F⇓

    Chance
    T-storms

  • Saturday Night

    Saturday Night: Showers and thunderstorms likely before 4am, then a chance of showers. Cloudy, with a low around 55. North northeast wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 55 °F

    Showers
    Likely

  • Sunday

    Sunday: Mostly cloudy, with a high near 72. Northeast wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 72 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 57. East wind 5 to 10 mph.

    Low: 57 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Monday

    Monday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 66. East wind around 5 mph. Chance of precipitation is 60%.

    High: 66 °F

    Chance
    T-storms then
    Showers
    Likely

  • Monday Night

    Monday Night: A 40 percent chance of showers and thunderstorms. Cloudy, with a low around 59. East wind around 5 mph.

    Low: 59 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms. Cloudy, with a high near 74. East southeast wind 5 to 10 mph.

    High: 74 °F

    Chance
    Showers then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 66. East southeast wind 5 to 10 mph.

    Low: 66 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 67. South southeast wind 5 to 15 mph, with gusts as high as 25 mph.
Saturday
A 40 percent chance of showers and thunderstorms, mainly after 4pm. Cloudy, with a temperature rising to near 74 by 10am, then falling to around 63 during the remainder of the day. East southeast wind 5 to 10 mph becoming north northeast 10 to 15 mph in the afternoon. Winds could gust as high as 30 mph.
Saturday Night
Showers and thunderstorms likely before 4am, then a chance of showers. Cloudy, with a low around 55. North northeast wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Sunday
Mostly cloudy, with a high near 72. Northeast wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 57. East wind 5 to 10 mph.
Monday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 66. East wind around 5 mph. Chance of precipitation is 60%.
Monday Night
A 40 percent chance of showers and thunderstorms. Cloudy, with a low around 59. East wind around 5 mph.
Tuesday
A 40 percent chance of showers and thunderstorms. Cloudy, with a high near 74. East southeast wind 5 to 10 mph.
Tuesday Night
Mostly cloudy, with a low around 66. East southeast wind 5 to 10 mph.
Wednesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 84.
Wednesday Night
Mostly cloudy, with a low around 68.
Thursday
Mostly cloudy, with a high near 86.
Thursday Night
Mostly cloudy, with a low around 69.
Friday
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 85.
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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:
2:44 pm CDT Apr 17, 2026
Forecast Valid:
4pm CDT Apr 17, 2026-6pm CDT Apr 24, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation