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

80°F

27°C

Humidity 82%
Wind Speed SE 18 G 28 mph
Barometer 29.81 in (1007.4 mb)
Dewpoint 74°F (23°C)
Visibility 7.00 mi
Heat Index85°F (29°C)
Last update 17 May 11:51 pm CDT
Extended Forecast for

Terrell Hills TX

  • Overnight

    Overnight: Mostly cloudy, with a low around 78. South southeast wind around 15 mph, with gusts as high as 25 mph.

    Low: 78 °F

    Mostly Cloudy

  • Monday

    Monday: Cloudy, then gradually becoming mostly sunny, with a high near 92. Heat index values as high as 100. South southeast wind around 15 mph, with gusts as high as 30 mph.

    High: 92 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: A 20 percent chance of showers and thunderstorms before 10pm. Mostly cloudy, with a low around 78. Southeast wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 78 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 91. Heat index values as high as 100. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 91 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 73. East southeast wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.

    Low: 73 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 87. East southeast wind around 10 mph. Chance of precipitation is 60%.

    High: 87 °F

    Chance
    T-storms then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72. East southeast wind 5 to 10 mph.

    Low: 72 °F

    Chance
    T-storms

  • Thursday

    Thursday: Showers and possibly a thunderstorm. High near 83. East southeast wind 5 to 10 mph. Chance of precipitation is 80%.

    High: 83 °F

    Showers
    Likely then
    T-storms

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 70. East wind 5 to 10 mph. Chance of precipitation is 80%.

    Low: 70 °F

    Heavy Rain

Detailed Forecast

Overnight
Mostly cloudy, with a low around 78. South southeast wind around 15 mph, with gusts as high as 25 mph.
Monday
Cloudy, then gradually becoming mostly sunny, with a high near 92. Heat index values as high as 100. South southeast wind around 15 mph, with gusts as high as 30 mph.
Monday Night
A 20 percent chance of showers and thunderstorms before 10pm. Mostly cloudy, with a low around 78. Southeast wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 91. Heat index values as high as 100. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 73. East southeast wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Wednesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 87. East southeast wind around 10 mph. Chance of precipitation is 60%.
Wednesday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72. East southeast wind 5 to 10 mph.
Thursday
Showers and possibly a thunderstorm. High near 83. East southeast wind 5 to 10 mph. Chance of precipitation is 80%.
Thursday Night
Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 70. East wind 5 to 10 mph. Chance of precipitation is 80%.
Friday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 82. Chance of precipitation is 70%.
Friday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69.
Saturday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 83.
Saturday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70.
Sunday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 84.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Terrell Hills TX
 29.46°N 98.43°W (Elev. 653 ft)
Last Update:
11:32 pm CDT May 17, 2026
Forecast Valid:
12am CDT May 18, 2026-6pm CDT May 24, 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