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.

Overcast

68°F

20°C

Humidity 81%
Wind Speed NE 10 mph
Barometer 29.90 in (1011.1 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 30 Apr 11:51 am CDT
Extended Forecast for

San Antonio TX

Flood Watch April 30, 09:00pm until May 1, 09:00pm
Click here for hazard details and duration
Flood Watch

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 82. East northeast wind around 10 mph.

    High: 82 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 64. Northeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.

    Low: 64 °F

    Chance
    T-storms then
    Showers

  • Friday

    Friday: Showers and possibly a thunderstorm. High near 67. East northeast wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

    High: 67 °F

    Showers then
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 1am. Mostly cloudy, with a low around 53. North northeast wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.

    Low: 53 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Saturday

    Saturday: Sunny, with a high near 72. North wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 72 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 52. Northeast wind 5 to 10 mph becoming light north northeast after midnight.

    Low: 52 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 77. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 77 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 58. Southeast wind around 5 mph.

    Low: 58 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 83. Light south southeast wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 83 °F

    Partly Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 82. East northeast wind around 10 mph.
Tonight
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 64. Northeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.
Friday
Showers and possibly a thunderstorm. High near 67. East northeast wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Friday Night
A chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 1am. Mostly cloudy, with a low around 53. North northeast wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.
Saturday
Sunny, with a high near 72. North wind 10 to 15 mph, with gusts as high as 20 mph.
Saturday Night
Mostly clear, with a low around 52. Northeast wind 5 to 10 mph becoming light north northeast after midnight.
Sunday
Partly sunny, with a high near 77. Calm wind becoming southeast around 5 mph in the afternoon.
Sunday Night
Mostly cloudy, with a low around 58. Southeast wind around 5 mph.
Monday
Partly sunny, with a high near 83. Light south southeast wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Monday Night
Mostly cloudy, with a low around 66.
Tuesday
Mostly cloudy, with a high near 89.
Tuesday Night
Mostly cloudy, with a low around 72.
Wednesday
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 90.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
San Antonio TX
 29.44°N 98.5°W (Elev. 650 ft)
Last Update:
11:32 am CDT Apr 30, 2026
Forecast Valid:
12pm CDT Apr 30, 2026-6pm CDT May 6, 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