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.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

3 Miles WSW Grand Isle LA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 74. Breezy, with a northeast wind 20 to 25 mph.

    High: 74 °F

    Mostly Sunny
    and Breezy

  • Tonight

    Tonight: Partly cloudy, with a low around 69. Breezy, with an east wind 15 to 20 mph.

    Low: 69 °F

    Partly Cloudy
    and Breezy

  • Monday

    Monday: Mostly sunny, with a high near 76. Breezy, with a northeast wind 15 to 20 mph.

    High: 76 °F

    Mostly Sunny
    and Breezy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 72. Breezy, with a northeast wind 15 to 20 mph.

    Low: 72 °F

    Mostly Cloudy
    and Breezy
    then Mostly
    Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 77. Breezy, with a northeast wind 15 to 20 mph.

    High: 77 °F

    Sunny and
    Breezy

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 70. Northeast wind 10 to 15 mph.

    Low: 70 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 77. Northeast wind around 15 mph.

    High: 77 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 70. Northeast wind 5 to 10 mph.

    Low: 70 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 77. Northeast wind 5 to 15 mph.

    High: 77 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 74. Breezy, with a northeast wind 20 to 25 mph.
Tonight
Partly cloudy, with a low around 69. Breezy, with an east wind 15 to 20 mph.
Monday
Mostly sunny, with a high near 76. Breezy, with a northeast wind 15 to 20 mph.
Monday Night
Mostly cloudy, with a low around 72. Breezy, with a northeast wind 15 to 20 mph.
Tuesday
Sunny, with a high near 77. Breezy, with a northeast wind 15 to 20 mph.
Tuesday Night
Mostly clear, with a low around 70. Northeast wind 10 to 15 mph.
Wednesday
Sunny, with a high near 77. Northeast wind around 15 mph.
Wednesday Night
Clear, with a low around 70. Northeast wind 5 to 10 mph.
Thursday
Sunny, with a high near 77. Northeast wind 5 to 15 mph.
Thursday Night
Clear, with a low around 70. Northeast wind around 5 mph becoming calm.
Friday
Sunny, with a high near 77. Northeast wind around 10 mph.
Friday Night
Clear, with a low around 71. East wind 10 to 15 mph.
Saturday
Sunny, with a high near 77. Breezy, with an east wind 15 to 20 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WSW Grand Isle LA
 29.21°N 90.01°W
Last Update:
1:57 pm CDT Oct 18, 2026
Forecast Valid:
2pm CDT Oct 18, 2026-6pm CDT Oct 24, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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