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

73°F

23°C

Humidity 79%
Wind Speed SE 14 G 26 mph
Barometer 30.06 in (1016.2 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 12 Apr 12:51 am CDT
Extended Forecast for

3 Miles WNW Castle Hills TX

  • Overnight

    Overnight: A chance of showers and thunderstorms, then showers likely after 4am. Patchy fog after 4am. Otherwise, cloudy, with a low around 68. South southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 68 °F

    Showers
    Likely and
    Patchy Fog

  • Sunday

    Sunday: Showers likely before 7am, then showers likely and possibly a thunderstorm between 7am and 1pm, then showers and thunderstorms likely after 1pm. Some of the storms could be severe. Patchy fog before 11am. Otherwise, cloudy, with a high near 77. South southeast wind around 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.

    High: 77 °F

    Severe
    Thunderstorms
    and Patchy
    Fog

  • Sunday Night

    Sunday Night: A 50 percent chance of showers and thunderstorms, mainly before 1am. Cloudy, with a low around 69. South southeast wind 5 to 10 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 69 °F

    Chance
    T-storms

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 1pm. Patchy fog before 8am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 83. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 83 °F

    Patchy Fog
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 68. South southeast wind around 10 mph.

    Low: 68 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 81. South southeast wind around 10 mph, with gusts as high as 20 mph.

    High: 81 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 67. South southeast wind around 10 mph, with gusts as high as 20 mph.

    Low: 67 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 83. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 83 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 68. Southeast wind 5 to 10 mph.

    Low: 68 °F

    Slight Chance
    T-storms

Detailed Forecast

Overnight
A chance of showers and thunderstorms, then showers likely after 4am. Patchy fog after 4am. Otherwise, cloudy, with a low around 68. South southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
Showers likely before 7am, then showers likely and possibly a thunderstorm between 7am and 1pm, then showers and thunderstorms likely after 1pm. Some of the storms could be severe. Patchy fog before 11am. Otherwise, cloudy, with a high near 77. South southeast wind around 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.
Sunday Night
A 50 percent chance of showers and thunderstorms, mainly before 1am. Cloudy, with a low around 69. South southeast wind 5 to 10 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Patchy fog before 8am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 83. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Monday Night
Mostly cloudy, with a low around 68. South southeast wind around 10 mph.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 81. South southeast wind around 10 mph, with gusts as high as 20 mph.
Tuesday Night
A 20 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 67. South southeast wind around 10 mph, with gusts as high as 20 mph.
Wednesday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 83. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday Night
A 20 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 68. Southeast wind 5 to 10 mph.
Thursday
Partly sunny, with a high near 87.
Thursday Night
Partly cloudy, with a low around 68.
Friday
Mostly cloudy, with a high near 88.
Friday Night
Mostly cloudy, with a low around 69.
Saturday
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 85.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WNW Castle Hills TX
 29.55°N 98.56°W (Elev. 919 ft)
Last Update:
1:04 am CDT Apr 12, 2026
Forecast Valid:
1am CDT Apr 12, 2026-6pm CDT Apr 18, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation