National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Galveston, Scholes Field (KGLS)

Lat: 29.27°NLon: 94.86°WElev: 7ft.

Mostly Cloudy

78°F

26°C

Humidity 87%
Wind Speed SW 6 mph
Barometer 29.91 in (1012.7 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 21 May 2:52 pm CDT
Extended Forecast for

San Leon TX

Flood Watch May 21, 03:21pm until May 25, 07:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch May 21, 03:21pm until May 25, 07:00am

    NOW until 7:00am Mon

    Flood Watch

  • This Afternoon

    High: 81 °F

    Showers
    Likely

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 76. South wind around 10 mph.

    Low: 76 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84. South wind 10 to 15 mph.

    High: 84 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 79. South wind around 10 mph.

    Low: 79 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Saturday

    Saturday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 83. Southeast wind 10 to 15 mph. Chance of precipitation is 70%.

    High: 83 °F

    Chance
    T-storms then
    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm. Low around 76. Chance of precipitation is 90%.

    Low: 76 °F

    Showers

  • Sunday

    Sunday: Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 81. Chance of precipitation is 90%.

    High: 81 °F

    Heavy Rain

  • 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 77. Chance of precipitation is 60%.

    Low: 77 °F

    Chance
    T-storms then
    Showers
    Likely

Detailed Forecast

This Afternoon
Showers likely and possibly a thunderstorm before 4pm, then a chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 81. Southeast wind around 10 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 76. South wind around 10 mph.
Friday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84. South wind 10 to 15 mph.
Friday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 79. South wind around 10 mph.
Saturday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 83. Southeast wind 10 to 15 mph. Chance of precipitation is 70%.
Saturday Night
Showers and possibly a thunderstorm. Low around 76. Chance of precipitation is 90%.
Sunday
Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 81. Chance of precipitation is 90%.
Sunday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 77. Chance of precipitation is 60%.
Memorial Day
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 84.
Monday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 78.
Tuesday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85.
Tuesday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 79.
Wednesday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 84. Chance of precipitation is 70%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
San Leon TX
 29.48°N 94.92°W (Elev. 3 ft)
Last Update:
1:56 pm CDT May 21, 2026
Forecast Valid:
3pm CDT May 21, 2026-6pm CDT May 27, 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