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Current conditions at
Galliano, South Lafourche Airport (KGAO)
Lat: 29.44°NLon: 90.26°WElev: 0ft.
Overcast
69°F
21°C
| Humidity | 89% |
| Wind Speed | SE 7 mph |
| Barometer | 29.89 in |
| Dewpoint | 66°F (19°C) |
| Visibility | 10.00 mi |
| Last update | 14 Feb 8:35 pm CST |
Extended Forecast for
Grand Isle LA
Tonight
Low: 62 °F
Mostly Cloudy
then Showers
Likely and
BreezySunday
High: 70 °F
Breezy.
Chance
Showers then
SunnySunday Night
Low: 55 °F
Partly Cloudy
Washington's Birthday
High: 64 °F
Mostly Sunny
Monday Night
Low: 58 °F
Partly Cloudy
Tuesday
High: 69 °F
Partly Sunny
Tuesday Night
Low: 63 °F
Mostly Cloudy
Wednesday
High: 71 °F
Mostly Sunny
Wednesday Night
Low: 64 °F
Mostly Cloudy
Detailed Forecast
Tonight
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 3am. Mostly cloudy, with a low around 62. Breezy, with a south wind 15 to 25 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
A chance of showers and thunderstorms before 8am, then a slight chance of showers between 8am and 9am. Mostly cloudy, then gradually becoming sunny, with a high near 70. Breezy, with a west wind 15 to 25 mph. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Partly cloudy, with a low around 55. West wind 10 to 15 mph becoming north after midnight.
Washington's Birthday
Mostly sunny, with a high near 64. North wind 5 to 10 mph becoming east in the afternoon.
Monday Night
Partly cloudy, with a low around 58. East wind around 5 mph becoming calm.
Tuesday
Partly sunny, with a high near 69. Calm wind becoming southeast around 5 mph in the morning.
Tuesday Night
Mostly cloudy, with a low around 63. Southeast wind 5 to 10 mph.
Wednesday
Mostly sunny, with a high near 71. South wind around 10 mph.
Wednesday Night
Mostly cloudy, with a low around 64. South wind 10 to 15 mph.
Thursday
Mostly sunny, with a high near 72. South wind 10 to 15 mph.
Thursday Night
A slight chance of showers. Mostly cloudy, with a low around 64. South wind around 10 mph.
Friday
A chance of showers. Mostly sunny, with a high near 72. South wind 10 to 15 mph.
Friday Night
A chance of showers. Partly cloudy, with a low around 61. South wind around 10 mph becoming northwest after midnight.
Saturday
A slight chance of showers. Mostly sunny, with a high near 69. Northeast wind 10 to 15 mph.
Additional Forecasts and Information
Basemap Options
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Grand Isle LA
29.23°N 89.99°W
29.23°N 89.99°W
7:08 pm CST Feb 14, 2026
8pm CST Feb 14, 2026-6pm CST Feb 21, 2026
Additional Resources
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