Current conditions at
Galliano, South Lafourche Airport (KGAO)
Lat: 29.44°NLon: 90.26°WElev: 0ft.
Overcast
55°F
13°C
| Humidity | 92% |
| Wind Speed | Calm |
| Barometer | 29.98 in |
| Dewpoint | 53°F (12°C) |
| Visibility | 10.00 mi |
| Last update | 7 Dec 1:15 am CST |
Extended Forecast for
Grand Isle LA
Overnight
Low: 65 °F
Showers
LikelySunday
High: 68 °F
Showers
LikelySunday Night
Low: 56 °F
Chance
Showers then
Slight Chance
Showers and
BreezyMonday
High: 61 °F
Partly Sunny
and Breezy
then Mostly
SunnyMonday Night
Low: 52 °F
Mostly Clear
Tuesday
High: 60 °F
Sunny
Tuesday Night
Low: 55 °F
Mostly Clear
Wednesday
High: 67 °F
Sunny
Wednesday Night
Low: 63 °F
Mostly Clear
Detailed Forecast
Overnight
A chance of showers before 3am, then a chance of showers and thunderstorms between 3am and 5am, then showers likely and possibly a thunderstorm after 5am. Cloudy, with a steady temperature around 65. Northeast wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
Showers and thunderstorms likely before 3pm, then a slight chance of showers between 3pm and 4pm. Mostly cloudy, with a high near 68. Northeast wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A chance of showers between 9pm and 1am. Mostly cloudy, with a low around 56. Breezy, with an east wind 5 to 10 mph becoming north 15 to 20 mph after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 61. Breezy, with a north wind 15 to 20 mph, with gusts as high as 30 mph.
Monday Night
Mostly clear, with a low around 52. Northeast wind 10 to 15 mph.
Tuesday
Sunny, with a high near 60. Northeast wind 5 to 10 mph becoming light in the afternoon.
Tuesday Night
Mostly clear, with a low around 55. Calm wind becoming southwest around 5 mph after midnight.
Wednesday
Sunny, with a high near 67. Southwest wind around 5 mph.
Wednesday Night
Mostly clear, with a low around 63. South wind 5 to 10 mph.
Thursday
Mostly sunny, with a high near 71. South wind around 10 mph.
Thursday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 62. Southwest wind around 10 mph becoming west after midnight.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 68. West wind 10 to 15 mph becoming north in the afternoon.
Friday Night
Partly cloudy, with a low around 47. Breezy, with a north wind 15 to 20 mph.
Saturday
Sunny, with a high near 54. Breezy, with a northeast wind 15 to 20 mph.
Additional Forecasts and Information
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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
11:31 pm CST Dec 6, 2025
1am CST Dec 7, 2025-6pm CST Dec 13, 2025
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