Hazardous Weather Conditions
Current conditions at
Galliano, South Lafourche Airport (KGAO)
Lat: 29.44°NLon: 90.26°WElev: 0ft.
Fair
70°F
21°C
| Humidity | 88% |
| Wind Speed | S 3 mph |
| Barometer | 30.03 in |
| Dewpoint | 66°F (19°C) |
| Visibility | 10.00 mi |
| Last update | 28 Dec 6:55 pm CST |
Extended Forecast for
Grand Isle LA
Wind Advisory December 29, 03:00am until December 29, 03:00pm
Tonight
Low: 55 °F
Showers
Likely and
Patchy FogMonday
High: 65 °F⇓
Slight Chance
Showers and
Windy then
Mostly Sunny
and BreezyMonday Night

Low: 42 °F
Partly Cloudy
and WindyTuesday
High: 51 °F
Sunny and
Breezy then
SunnyTuesday Night

Low: 44 °F
Mostly Clear
Wednesday

High: 56 °F
Sunny
Wednesday Night

Low: 51 °F
Mostly Clear
New Year's Day

High: 64 °F
Sunny
Thursday Night

Low: 60 °F
Mostly Cloudy
Detailed Forecast
Tonight
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5am. Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 55. Breezy, with a south wind 5 to 10 mph becoming northwest 15 to 20 mph after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
A 20 percent chance of showers before 7am. Mostly sunny, with a temperature falling to around 55 by 4pm. Windy, with a north wind 25 to 30 mph.
Monday Night
Partly cloudy, with a low around 42. Windy, with a north wind 25 to 30 mph.
Tuesday
Sunny, with a high near 51. Breezy, with a north wind 15 to 25 mph.
Tuesday Night
Mostly clear, with a low around 44. North wind 10 to 15 mph.
Wednesday
Sunny, with a high near 56. North wind 5 to 10 mph becoming west in the afternoon.
Wednesday Night
Mostly clear, with a low around 51. West wind around 5 mph.
New Year's Day
Sunny, with a high near 64. West wind around 5 mph.
Thursday Night
Mostly cloudy, with a low around 60. Southwest wind around 5 mph.
Friday
A slight chance of showers after noon. Partly sunny, with a high near 69. South wind 5 to 10 mph.
Friday Night
A chance of showers. Partly cloudy, with a low around 63. South wind 10 to 15 mph.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 69. Southwest wind 10 to 15 mph.
Saturday Night
Partly cloudy, with a low around 58. West wind around 10 mph becoming northwest after midnight.
Sunday
Sunny, with a high near 65. North wind around 10 mph.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Grand Isle LA
29.23°N 89.99°W
29.23°N 89.99°W
11:25 am CST Dec 28, 2025
7pm CST Dec 28, 2025-6pm CST Jan 4, 2026



