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.

Overcast

73°F

23°C

Humidity 86%
Wind Speed Calm
Barometer 30.11 in
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Last update 16 Apr 7:55 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: Mostly clear, with a low around 68. South wind around 5 mph.

    Low: 68 °F

    Mostly Clear

  • Friday

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

    High: 80 °F

    Sunny

  • Friday Night

    Friday Night: 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: Mostly cloudy, with a low around 62. South wind around 5 mph becoming northwest after midnight.

    Low: 62 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms before 1pm. Mostly cloudy, with a high near 76. North wind 10 to 15 mph.

    High: 76 °F

    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 61. Northeast wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 61 °F

    Mostly 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

Detailed Forecast

Today
Sunny, with a high near 80. Southeast wind 5 to 10 mph.
Tonight
Mostly clear, with a low around 68. South wind around 5 mph.
Friday
Sunny, with a high near 80. Southeast wind 5 to 10 mph.
Friday Night
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
Mostly cloudy, with a low around 62. South wind around 5 mph becoming northwest after midnight.
Sunday
A 20 percent chance of showers and thunderstorms before 1pm. Mostly cloudy, with a high near 76. North wind 10 to 15 mph.
Sunday Night
Mostly cloudy, with a low around 61. Northeast wind 10 to 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 around 10 mph, with gusts as high as 20 mph.
Tuesday
A slight chance of showers. Mostly cloudy, with a high near 77. East wind 10 to 15 mph.
Tuesday Night
A slight chance of showers. Mostly cloudy, with a low around 65. Southeast wind around 10 mph.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 78. Southeast wind 10 to 15 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
15 Miles WSW Grand Isle LA
 29.13°N 90.2°W
Last Update:
4:54 am CDT Apr 16, 2026
Forecast Valid:
8am CDT Apr 16, 2026-6pm CDT Apr 22, 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