Hazardous Weather Conditions
Current conditions at
Galliano, South Lafourche Airport (KGAO)
Lat: 29.44°NLon: 90.26°WElev: 0ft.
Fair
77°F
25°C
| Humidity | 83% |
| Wind Speed | SE 8 mph |
| Barometer | 30.05 in |
| Dewpoint | 72°F (22°C) |
| Visibility | 10.00 mi |
| Heat Index | 78°F (26°C) |
| Last update | 15 Oct 12:15 am CDT |
Extended Forecast for
Grand Isle LA
Dense Fog Advisory October 15, 01:00am until October 15, 11:00am
Overnight
Low: 77 °F
Mostly Clear
Thursday
High: 82 °F
Sunny
Thursday Night
Low: 77 °F
Increasing
CloudsFriday
High: 82 °F
Chance
ShowersFriday Night
Low: 66 °F
Mostly Cloudy
then Partly
Cloudy and
WindySaturday
High: 73 °F
Mostly Sunny
and WindySaturday Night
Low: 68 °F
Mostly Clear
and WindySunday
High: 76 °F
Mostly Sunny
and Breezy
then Slight
Chance
Showers and
WindySunday Night
Low: 71 °F
Mostly Cloudy
and Windy
Detailed Forecast
Overnight
Mostly clear, with a low around 77. Southeast wind around 10 mph.
Thursday
Sunny, with a high near 82. East wind around 10 mph.
Thursday Night
Increasing clouds, with a low around 77. East wind 5 to 10 mph.
Friday
A chance of showers and thunderstorms before noon, then a chance of showers after 1pm. Partly sunny, with a high near 82. Northeast wind 5 to 10 mph. Chance of precipitation is 40%.
Friday Night
Mostly cloudy, with a low around 66. Windy, with an east wind 5 to 10 mph becoming north 25 to 35 mph.
Saturday
Mostly sunny, with a high near 73. Windy, with a northeast wind 25 to 35 mph.
Saturday Night
Mostly clear, with a low around 68. Windy, with a northeast wind 25 to 30 mph.
Sunday
A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 76. Windy, with a northeast wind 25 to 30 mph.
Sunday Night
Mostly cloudy, with a low around 71. Windy, with an east wind 25 to 30 mph.
Monday
A chance of showers. Partly sunny, with a high near 77. Windy, with an east wind 25 to 30 mph.
Monday Night
Partly cloudy, with a low around 72. Breezy, with an east wind 20 to 25 mph.
Tuesday
A slight chance of showers. Mostly sunny, with a high near 78. Breezy, with an east wind 20 to 25 mph.
Tuesday Night
Partly cloudy, with a low around 73. Breezy, with an east wind around 20 mph.
Wednesday
A slight chance of showers. Mostly sunny, with a high near 78. Breezy, with a northeast wind around 20 mph.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
Grand Isle LA
29.24°N 90.01°W
29.24°N 90.01°W
11:25 pm CDT Oct 14, 2026
12am CDT Oct 15, 2026-6pm CDT Oct 21, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
