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

61°F

16°C

Humidity 97%
Wind Speed Calm
Barometer 30.15 in (1019.9 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 21 Apr 2:51 am CDT
Extended Forecast for

San Antonio International Airport TX

  • Overnight

    Overnight: Showers likely and possibly a thunderstorm. Cloudy, with a low around 60. East wind around 5 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 60 °F

    Showers
    Likely

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm. Cloudy, with a high near 71. East wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 71 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms, mainly before 10pm. Cloudy, with a low around 65. East wind 5 to 10 mph.

    Low: 65 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms, mainly after 1pm. Mostly cloudy, with a high near 81. South southeast wind around 5 mph.

    High: 81 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • 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 85. South 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 5 to 10 mph.

    Low: 69 °F

    Mostly Cloudy

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 86. South wind around 5 mph.

    High: 86 °F

    Cloudy then
    Slight Chance
    T-storms

  • Friday Night

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

    Low: 69 °F

    Partly Cloudy

Detailed Forecast

Overnight
Showers likely and possibly a thunderstorm. Cloudy, with a low around 60. East wind around 5 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday
Showers likely and possibly a thunderstorm. Cloudy, with a high near 71. East wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
A 30 percent chance of showers and thunderstorms, mainly before 10pm. Cloudy, with a low around 65. East wind 5 to 10 mph.
Wednesday
A 50 percent chance of showers and thunderstorms, mainly after 1pm. Mostly cloudy, with a high near 81. South southeast wind around 5 mph.
Wednesday Night
Mostly cloudy, with a low around 67. Southeast wind 5 to 10 mph.
Thursday
Mostly cloudy, with a high near 85. 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
A 20 percent chance of showers and thunderstorms after 1pm. 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 88.
Saturday Night
Mostly cloudy, with a low around 70.
Sunday
Mostly cloudy, with a high near 90.
Sunday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70.
Monday
Partly sunny, with a high near 92.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
San Antonio International Airport TX
 29.53°N 98.48°W (Elev. 817 ft)
Last Update:
2:44 am CDT Apr 21, 2026
Forecast Valid:
3am CDT Apr 21, 2026-6pm CDT Apr 27, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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