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

84°F

29°C

Humidity 55%
Wind Speed Vrbl 3 mph
Barometer 29.88 in (1010.0 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 23 May 4:51 pm CDT
Extended Forecast for

Alamo Heights TX

Flood Watch May 23, 05:00pm until May 25, 07:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch May 23, 05:00pm until May 25, 07:00pm

    NOW until 7:00pm Mon

    Flood Watch

  • This Afternoon

    High: 82 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 68. East southeast wind around 5 mph becoming calm in the evening.

    Low: 68 °F

    Chance
    T-storms then
    Chance
    Showers

  • Sunday

    Sunday: Sunny, with a high near 85. Northeast wind around 5 mph.

    High: 85 °F

    Sunny

  • Sunday Night

    Sunday Night: Increasing clouds, with a low around 68. East wind 5 to 10 mph becoming light north northeast in the evening.

    Low: 68 °F

    Increasing
    Clouds

  • Memorial Day

    Memorial Day: Mostly sunny, with a high near 87. North northeast wind around 5 mph becoming east in the afternoon.

    High: 87 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 70. East southeast wind around 5 mph.

    Low: 70 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 86. Light east southeast wind becoming southeast 5 to 10 mph in the afternoon.

    High: 86 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 69. Southeast wind 5 to 10 mph. Chance of precipitation is 80%.

    Low: 69 °F

    Heavy Rain

Detailed Forecast

This Afternoon
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 82. South southeast wind around 5 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 68. East southeast wind around 5 mph becoming calm in the evening.
Sunday
Sunny, with a high near 85. Northeast wind around 5 mph.
Sunday Night
Increasing clouds, with a low around 68. East wind 5 to 10 mph becoming light north northeast in the evening.
Memorial Day
Mostly sunny, with a high near 87. North northeast wind around 5 mph becoming east in the afternoon.
Monday Night
Partly cloudy, with a low around 70. East southeast wind around 5 mph.
Tuesday
A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 86. Light east southeast wind becoming southeast 5 to 10 mph in the afternoon.
Tuesday Night
Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 69. Southeast wind 5 to 10 mph. Chance of precipitation is 80%.
Wednesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 83. Southeast wind 5 to 10 mph. Chance of precipitation is 70%.
Wednesday Night
A 30 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 70.
Thursday
Partly sunny, with a high near 87.
Thursday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72.
Friday
Partly sunny, with a high near 89.
Friday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73.
Saturday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 88.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Alamo Heights TX
 29.48°N 98.45°W (Elev. 797 ft)
Last Update:
2:46 pm CDT May 23, 2026
Forecast Valid:
5pm CDT May 23, 2026-6pm CDT May 30, 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