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.

Thunderstorm

68°F

20°C

Humidity 87%
Wind Speed SE 14 G 18 mph
Barometer 29.85 in (1009.1 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 21 May 11:51 pm CDT
Extended Forecast for

Terrell Hills TX

Flood Watch May 22, 07:00pm until May 25, 07:00pm
Flood Advisory until May 22, 01:00am
Click here for hazard details and duration
Flood Watch
...
  •  
    Flood Advisory until May 22, 01:00am

    NOW until 1:00am Fri

    Flood Advisory

  • Overnight

    Low: 69 °F

    T-storms
    Likely

  • Friday

    Friday: A slight chance of showers and thunderstorms before 10am, then a slight chance of showers and thunderstorms after 4pm. Cloudy through mid morning, then gradual clearing, with a high near 86. Calm wind becoming south southeast around 5 mph in the afternoon. Chance of precipitation is 20%.

    High: 86 °F

    Slight Chance
    T-storms

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms, mainly after 1am. Increasing clouds, with a low around 71. Southeast wind around 5 mph.

    Low: 71 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Saturday

    Saturday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 82. Southeast wind around 5 mph. Chance of precipitation is 90%.

    High: 82 °F

    Chance
    T-storms then
    Showers

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm before 10pm, then showers likely between 10pm and 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 68. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%.

    Low: 68 °F

    Showers
    Likely

  • Sunday

    Sunday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 84. Northeast wind around 5 mph.

    High: 84 °F

    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 69. East wind around 5 mph becoming calm in the evening.

    Low: 69 °F

    Chance
    T-storms

  • Memorial Day

    Memorial Day: A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 85. East northeast wind around 5 mph.

    High: 85 °F

    Chance
    T-storms

Detailed Forecast

Overnight
Showers and thunderstorms likely before 1am. Mostly cloudy, with a low around 69. East wind around 5 mph becoming south southwest. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
A slight chance of showers and thunderstorms before 10am, then a slight chance of showers and thunderstorms after 4pm. Cloudy through mid morning, then gradual clearing, with a high near 86. Calm wind becoming south southeast around 5 mph in the afternoon. Chance of precipitation is 20%.
Friday Night
A 30 percent chance of showers and thunderstorms, mainly after 1am. Increasing clouds, with a low around 71. Southeast wind around 5 mph.
Saturday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 82. Southeast wind around 5 mph. Chance of precipitation is 90%.
Saturday Night
Showers likely and possibly a thunderstorm before 10pm, then showers likely between 10pm and 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 68. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%.
Sunday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 84. Northeast wind around 5 mph.
Sunday Night
A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 69. East wind around 5 mph becoming calm in the evening.
Memorial Day
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 85. East northeast wind around 5 mph.
Monday Night
Mostly clear, with a low around 70. East wind around 5 mph becoming calm in the evening.
Tuesday
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 85.
Tuesday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 71. Chance of precipitation is 60%.
Wednesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 83. Chance of precipitation is 70%.
Wednesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71.
Thursday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 86.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Terrell Hills TX
 29.46°N 98.45°W (Elev. 797 ft)
Last Update:
11:32 pm CDT May 21, 2026
Forecast Valid:
12am CDT May 22, 2026-6pm CDT May 28, 2026
 
Forecast Discussion
 
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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