Flooding Threat Along the Gulf Coast, Southern Rockies and High Plains; Cooler Weather in the Central and Eastern U.S.

Strong thunderstorms may bring excessive rainfall and flooding over parts of the northern Gulf Coast today and over parts of the southern Rockies into the High Plains today through the weekend. A refreshingly cool and dry air mass will continue to produce below average temperatures across the central and eastern U.S. through the weekend. Read More >

Current conditions at

San Antonio, San Antonio International Airport (KSAT)

Lat: 29.53°NLon: 98.46°WElev: 807ft.

Thunderstorm

84°F

29°C

Humidity 65%
Wind Speed SE 8 mph
Barometer 29.93 in (1011.6 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 30 Aug 9:51 pm CDT
Extended Forecast for

Alamo Heights TX

Flood Advisory until August 31, 01:15am
Click here for hazard details and duration
Flood Advisory
  •  
    Flood Advisory until August 31, 01:15am

    NOW until 1:15am Sun

    Flood Advisory

  • Tonight

    Low: 77 °F

    Slight Chance
    T-storms

  • Sunday

    Sunday: A 40 percent chance of showers and thunderstorms after 1pm.  Mostly sunny, with a high near 97. Heat index values as high as 104. South wind around 5 mph becoming east northeast in the afternoon.

    High: 97 °F

    Partly Sunny
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am.  Mostly cloudy, with a low around 75. East wind 5 to 10 mph.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 75 °F

    Chance
    T-storms then
    Showers
    Likely

  • Labor Day

    Labor Day: Showers likely and possibly a thunderstorm.  Mostly cloudy, with a high near 89. North northeast wind around 5 mph.  Chance of precipitation is 70%.

    High: 89 °F

    Showers
    Likely

  • Monday Night

    Monday Night: A 20 percent chance of showers.  Mostly cloudy, with a low around 73. Northeast wind around 5 mph becoming calm  in the evening.

    Low: 73 °F

    Slight Chance
    Showers

  • Tuesday

    Tuesday: Mostly sunny, with a high near 93. North wind 5 to 10 mph.

    High: 93 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 72. Northeast wind around 5 mph.

    Low: 72 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 95. North wind around 5 mph.

    High: 95 °F

    Sunny

Detailed Forecast

Tonight
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 77. East southeast wind 5 to 10 mph.
Sunday
A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 97. Heat index values as high as 104. South wind around 5 mph becoming east northeast in the afternoon.
Sunday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 75. East wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Labor Day
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 89. North northeast wind around 5 mph. Chance of precipitation is 70%.
Monday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 73. Northeast wind around 5 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 93. North wind 5 to 10 mph.
Tuesday Night
Mostly clear, with a low around 72. Northeast wind around 5 mph.
Wednesday
Sunny, with a high near 95. North wind around 5 mph.
Wednesday Night
Mostly clear, with a low around 72. East northeast wind around 5 mph.
Thursday
Mostly sunny, with a high near 94.
Thursday Night
Partly cloudy, with a low around 72.
Friday
Partly sunny, with a high near 94.
Friday Night
Partly cloudy, with a low around 73.
Saturday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 93.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Alamo Heights TX
 29.48°N 98.48°W (Elev. 699 ft)
9:44 pm CDT Aug 30, 2025
10pm CDT Aug 30, 2025-6pm CDT Sep 6, 2025
 
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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