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

57°F

14°C

Humidity 72%
Wind Speed N 9 mph
Barometer 30.21 in (1021.9 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 20 Apr 5:51 am CDT
Extended Forecast for

San Antonio International Airport TX

  • Today

    Today: Showers and possibly a thunderstorm. High near 62. Northeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 62 °F

    Showers

  • Tonight

    Tonight: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms between 1am and 4am, then showers likely and possibly a thunderstorm after 4am. Cloudy, with a low around 58. East northeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 58 °F

    Showers
    Likely

  • Tuesday

    Tuesday: Showers and possibly a thunderstorm. High near 70. East wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 70 °F

    Showers

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers and thunderstorms. Cloudy, with a low around 64. East wind 5 to 10 mph.

    Low: 64 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly cloudy, with a high near 82. South southeast wind around 5 mph.

    High: 82 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 66. Southeast wind 5 to 10 mph.

    Low: 66 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 85. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 85 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 69. South southeast wind around 10 mph.

    Low: 69 °F

    Mostly Cloudy

  • Friday

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

    High: 87 °F

    Mostly Cloudy

Detailed Forecast

Today
Showers and possibly a thunderstorm. High near 62. Northeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Tonight
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms between 1am and 4am, then showers likely and possibly a thunderstorm after 4am. Cloudy, with a low around 58. East northeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
Tuesday
Showers and possibly a thunderstorm. High near 70. East wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday Night
A 40 percent chance of showers and thunderstorms. Cloudy, with a low around 64. East wind 5 to 10 mph.
Wednesday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly cloudy, with a high near 82. South southeast wind around 5 mph.
Wednesday Night
Mostly cloudy, with a low around 66. Southeast wind 5 to 10 mph.
Thursday
Mostly cloudy, with a high near 85. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday Night
Mostly cloudy, with a low around 69. South southeast wind around 10 mph.
Friday
Mostly cloudy, with a high near 87. South wind around 5 mph.
Friday Night
Mostly cloudy, with a low around 69.
Saturday
Mostly cloudy, with a high near 88.
Saturday Night
Mostly cloudy, with a low around 70.
Sunday
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 89.
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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:
5:32 am CDT Apr 20, 2026
Forecast Valid:
6am CDT Apr 20, 2026-6pm CDT Apr 26, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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