National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

San Antonio, San Antonio International Airport (KSAT)

Lat: 29.53°NLon: 98.46°WElev: 807ft.

A Few Clouds

81°F

27°C

Humidity 74%
Wind Speed SE 13 mph
Barometer 30.01 in (1014.2 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 12 Jul 11:51 pm CDT
Extended Forecast for

San Antonio International Airport TX

Flood Watch July 13, 12:26am until July 13, 07:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch July 13, 12:26am until July 13, 07:00pm

    NOW until 7:00pm Sun

    Flood Watch

  • Overnight

    Low: 77 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms, mainly after 1pm. Some of the storms could produce heavy rainfall. Partly sunny, with a high near 94. Heat index values as high as 103. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 94 °F

    Heavy Rain

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms before 1am. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 76. Southeast wind 5 to 10 mph.

    Low: 76 °F

    Heavy Rain

  • Monday

    Monday: Mostly sunny, with a high near 95. Heat index values as high as 101. South southeast wind 5 to 10 mph.

    High: 95 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 77. Southeast wind 5 to 10 mph.

    Low: 77 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 95. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 95 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 76. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 76 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 96. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 96 °F

    Mostly Sunny

Detailed Forecast

Overnight
Mostly cloudy, with a low around 77. South southeast wind 5 to 10 mph.
Sunday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Some of the storms could produce heavy rainfall. Partly sunny, with a high near 94. Heat index values as high as 103. South wind 5 to 10 mph, with gusts as high as 20 mph.
Sunday Night
A 30 percent chance of showers and thunderstorms before 1am. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 76. Southeast wind 5 to 10 mph.
Monday
Mostly sunny, with a high near 95. Heat index values as high as 101. South southeast wind 5 to 10 mph.
Monday Night
Mostly cloudy, with a low around 77. Southeast wind 5 to 10 mph.
Tuesday
Partly sunny, with a high near 95. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly cloudy, with a low around 76. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.
Wednesday
Mostly sunny, with a high near 96. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday Night
Partly cloudy, with a low around 74. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.
Thursday
Mostly sunny, with a high near 97.
Thursday Night
Mostly clear, with a low around 74.
Friday
Mostly sunny, with a high near 97.
Friday Night
Partly cloudy, with a low around 75.
Saturday
Mostly sunny, with a high near 97.
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 98.45°W (Elev. 771 ft)
Last Update:
12:02 am CDT Jul 13, 2025
Forecast Valid:
12am CDT Jul 13, 2025-6pm CDT Jul 19, 2025
 
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