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.

Mostly Cloudy

57°F

14°C

Humidity 15%
Wind Speed N 18 G 25 mph
Barometer 30.29 in (1024.7 mb)
Dewpoint 10°F (-12°C)
Visibility 10.00 mi
Last update 16 Mar 2:51 pm CDT
Extended Forecast for

Castle Hills TX

Red Flag Warning March 16, 03:32pm until March 16, 08:00pm
Click here for hazard details and duration
Red Flag Warning
  •  
    Red Flag Warning March 16, 03:32pm until March 16, 08:00pm

    NOW until 8:00pm Mon

    Red Flag Warning

  • This Afternoon

    High: 58 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy during the early evening, then gradual clearing, with a low around 37. North northeast wind 5 to 10 mph becoming east southeast after midnight.

    Low: 37 °F

    Gradual
    Clearing

  • Tuesday

    Tuesday: Sunny, with a high near 66. Light southeast wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 66 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 47. South wind 5 to 10 mph.

    Low: 47 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 77. South wind 5 to 10 mph.

    High: 77 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 52. South southeast wind around 5 mph.

    Low: 52 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 83. South southwest wind around 5 mph.

    High: 83 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 56. South wind around 5 mph.

    Low: 56 °F

    Clear

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 58. North wind around 10 mph, with gusts as high as 20 mph.
Tonight
Mostly cloudy during the early evening, then gradual clearing, with a low around 37. North northeast wind 5 to 10 mph becoming east southeast after midnight.
Tuesday
Sunny, with a high near 66. Light southeast wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 47. South wind 5 to 10 mph.
Wednesday
Sunny, with a high near 77. South wind 5 to 10 mph.
Wednesday Night
Mostly clear, with a low around 52. South southeast wind around 5 mph.
Thursday
Sunny, with a high near 83. South southwest wind around 5 mph.
Thursday Night
Clear, with a low around 56. South wind around 5 mph.
Friday
Sunny, with a high near 90. South southwest wind 5 to 10 mph.
Friday Night
Clear, with a low around 58.
Saturday
Sunny, with a high near 93.
Saturday Night
Clear, with a low around 59.
Sunday
Sunny, with a high near 93.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Castle Hills TX
 29.53°N 98.51°W (Elev. 869 ft)
Last Update:
2:44 pm CDT Mar 16, 2026
Forecast Valid:
3pm CDT Mar 16, 2026-6pm CDT Mar 22, 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