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

Galliano, South Lafourche Airport (KGAO)

Lat: 29.44°NLon: 90.26°WElev: 0ft.

Fair

74°F

23°C

Humidity 79%
Wind Speed SE 3 mph
Barometer 30.07 in
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 17 Apr 8:15 am CDT
Extended Forecast for

15 Miles WSW Grand Isle LA

  • Today

    Today: Sunny, with a high near 80. Southeast wind 5 to 10 mph.

    High: 80 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 69. Southeast wind around 5 mph.

    Low: 69 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 80. South wind 5 to 10 mph.

    High: 80 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers between 1am and 4am, then a slight chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 61. South wind around 5 mph becoming northwest after midnight. Chance of precipitation is 20%.

    Low: 61 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms before 1pm. Mostly cloudy, with a high near 74. North wind around 15 mph, with gusts as high as 25 mph.

    High: 74 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 61. Northeast wind around 15 mph, with gusts as high as 25 mph.

    Low: 61 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 75. East wind around 15 mph, with gusts as high as 25 mph.

    High: 75 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 64. East wind 5 to 10 mph.

    Low: 64 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A slight chance of showers. Mostly cloudy, with a high near 77. East wind 10 to 15 mph.

    High: 77 °F

    Slight Chance
    Showers

Detailed Forecast

Today
Sunny, with a high near 80. Southeast wind 5 to 10 mph.
Tonight
Partly cloudy, with a low around 69. Southeast wind around 5 mph.
Saturday
Partly sunny, with a high near 80. South wind 5 to 10 mph.
Saturday Night
A slight chance of showers between 1am and 4am, then a slight chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 61. South wind around 5 mph becoming northwest after midnight. Chance of precipitation is 20%.
Sunday
A 30 percent chance of showers and thunderstorms before 1pm. Mostly cloudy, with a high near 74. North wind around 15 mph, with gusts as high as 25 mph.
Sunday Night
Partly cloudy, with a low around 61. Northeast wind around 15 mph, with gusts as high as 25 mph.
Monday
Partly sunny, with a high near 75. East wind around 15 mph, with gusts as high as 25 mph.
Monday Night
Mostly cloudy, with a low around 64. East wind 5 to 10 mph.
Tuesday
A slight chance of showers. Mostly cloudy, with a high near 77. East wind 10 to 15 mph.
Tuesday Night
Mostly cloudy, with a low around 65. East wind around 10 mph.
Wednesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 79. East wind 5 to 15 mph.
Wednesday Night
Partly cloudy, with a low around 67. Southeast wind around 10 mph.
Thursday
Sunny, with a high near 79. Southeast wind 10 to 15 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
15 Miles WSW Grand Isle LA
 29.13°N 90.2°W
Last Update:
4:29 am CDT Apr 17, 2026
Forecast Valid:
8am CDT Apr 17, 2026-6pm CDT Apr 23, 2026
 
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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