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.

Partly Cloudy

65°F

18°C

Humidity 54%
Wind Speed NE 5 mph
Barometer 29.80 in (1007.6 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 20 Feb 8:51 pm CST
Extended Forecast for

San Antonio International Airport TX

Red Flag Warning February 21, 10:00am until February 21, 09:00pm
Click here for hazard details and duration
Red Flag Warning

  • Tonight

    Tonight: Mostly cloudy, with a low around 57. East northeast wind around 5 mph becoming calm.

    Low: 57 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 75. North wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 75 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 42. North wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 42 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 65. Northeast wind around 10 mph, with gusts as high as 20 mph.

    High: 65 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 39. Northeast wind around 5 mph.

    Low: 39 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 67. North northeast wind around 5 mph becoming southeast in the afternoon.

    High: 67 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 42. Southeast wind around 5 mph becoming calm after midnight.

    Low: 42 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 73. Light south wind increasing to 10 to 15 mph in the morning. Winds could gust as high as 25 mph.

    High: 73 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 55. South wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 55 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 57. East northeast wind around 5 mph becoming calm.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 75. North wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 30 mph.
Saturday Night
Mostly clear, with a low around 42. North wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday
Sunny, with a high near 65. Northeast wind around 10 mph, with gusts as high as 20 mph.
Sunday Night
Mostly clear, with a low around 39. Northeast wind around 5 mph.
Monday
Sunny, with a high near 67. North northeast wind around 5 mph becoming southeast in the afternoon.
Monday Night
Mostly clear, with a low around 42. Southeast wind around 5 mph becoming calm after midnight.
Tuesday
Mostly sunny, with a high near 73. Light south wind increasing to 10 to 15 mph in the morning. Winds could gust as high as 25 mph.
Tuesday Night
Mostly clear, with a low around 55. South wind 5 to 15 mph, with gusts as high as 20 mph.
Wednesday
Mostly sunny, with a high near 85.
Wednesday Night
Mostly clear, with a low around 57.
Thursday
Sunny, with a high near 84.
Thursday Night
Mostly clear, with a low around 52.
Friday
Sunny, with a high near 81.
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
 29.55°N 98.46°W (Elev. 751 ft)
Last Update:
5:44 pm CST Feb 20, 2026
Forecast Valid:
9pm CST Feb 20, 2026-6pm CST Feb 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