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

65°F

18°C

Humidity 93%
Wind Speed E 12 mph
Barometer 30.14 in (1019.4 mb)
Dewpoint 63°F (17°C)
Visibility 7.00 mi
Last update 21 Apr 12:51 pm CDT
Extended Forecast for

San Antonio International Airport TX

  • This Afternoon

    This Afternoon: A 50 percent chance of showers and thunderstorms. Patchy fog. Otherwise, cloudy, with a high near 70. East wind 5 to 10 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 70 °F

    Chance
    T-storms and
    Patchy Fog

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms. Patchy fog. Otherwise, cloudy, with a low around 66. East wind 5 to 10 mph.

    Low: 66 °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 80. South southeast wind 5 to 10 mph.

    High: 80 °F

    Chance
    T-storms and
    Patchy Fog

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 67. South 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 69. South southeast wind 5 to 10 mph.

    Low: 69 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 86. South wind around 5 mph.

    High: 86 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 69. South southeast wind around 5 mph.

    Low: 69 °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 50 percent chance of showers and thunderstorms. Patchy fog. Otherwise, cloudy, with a high near 70. East wind 5 to 10 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
A 40 percent chance of showers and thunderstorms. Patchy fog. Otherwise, cloudy, with a low around 66. East 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 80. South southeast wind 5 to 10 mph.
Wednesday Night
Mostly cloudy, with a low around 67. South 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 69. South southeast wind 5 to 10 mph.
Friday
Mostly cloudy, with a high near 86. South wind around 5 mph.
Friday Night
Partly cloudy, with a low around 69. 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 70.
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.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
San Antonio International Airport TX
 29.53°N 98.48°W (Elev. 817 ft)
Last Update:
1:36 pm CDT Apr 21, 2026
Forecast Valid:
1pm CDT Apr 21, 2026-6pm CDT Apr 27, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation