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.

Light Rain Fog/Mist

63°F

17°C

Humidity 93%
Wind Speed E 10 mph
Barometer 30.10 in (1018.1 mb)
Dewpoint 61°F (16°C)
Visibility 1.50 mi
Last update 21 Apr 3:51 pm CDT
Extended Forecast for

San Antonio TX

  • This Afternoon

    This Afternoon: A 40 percent chance of showers and thunderstorms. Patchy fog after 5pm. Otherwise, cloudy, with a high near 70. East wind around 10 mph.

    High: 70 °F

    Chance
    T-storms and
    Patchy Fog

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly after 4am. Patchy fog after 7pm. Otherwise, cloudy, with a low around 67. East southeast wind 5 to 10 mph.

    Low: 67 °F

    Chance
    T-storms and
    Patchy Fog

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms, mainly after 1pm. Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 81. South southeast wind 5 to 10 mph.

    High: 81 °F

    Chance
    T-storms and
    Patchy Fog

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 67. Southeast wind 5 to 10 mph.

    Low: 67 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 84. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 84 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 70. South southeast wind 5 to 10 mph.

    Low: 70 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 87. South wind around 5 mph.

    High: 87 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 70. South southeast wind around 5 mph.

    Low: 70 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 91. South wind around 5 mph.

    High: 91 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
A 40 percent chance of showers and thunderstorms. Patchy fog after 5pm. Otherwise, cloudy, with a high near 70. East wind around 10 mph.
Tonight
A 40 percent chance of showers and thunderstorms, mainly after 4am. Patchy fog after 7pm. Otherwise, cloudy, with a low around 67. East southeast wind 5 to 10 mph.
Wednesday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 81. South southeast wind 5 to 10 mph.
Wednesday Night
Mostly cloudy, with a low around 67. Southeast wind 5 to 10 mph.
Thursday
Mostly cloudy, with a high near 84. South wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday Night
Mostly cloudy, with a low around 70. South southeast wind 5 to 10 mph.
Friday
Mostly cloudy, with a high near 87. South wind around 5 mph.
Friday Night
Partly cloudy, with a low around 70. South southeast wind around 5 mph.
Saturday
Mostly cloudy, with a high near 91. South wind around 5 mph.
Saturday Night
Mostly cloudy, with a low around 71.
Sunday
Mostly cloudy, with a high near 92.
Sunday Night
Partly cloudy, with a low around 72.
Monday
Partly sunny, with a high near 93.
Monday Night
Partly cloudy, with a low around 69.
Tuesday
Partly sunny, with a high near 93.
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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 21, 2026
Forecast Valid:
4pm CDT Apr 21, 2026-6pm CDT Apr 28, 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