Current conditions at
Galliano, South Lafourche Airport (KGAO)
Lat: 29.44°NLon: 90.26°WElev: 0ft.
Mostly Cloudy
87°F
31°C
| Humidity | 61% |
| Wind Speed | N 6 mph |
| Barometer | 30.06 in |
| Dewpoint | 72°F (22°C) |
| Visibility | 10.00 mi |
| Heat Index | 93°F (34°C) |
| Last update | 7 Jul 4:15 pm CDT |
Extended Forecast for
Grand Isle LA
This Afternoon

High: 89 °F
Slight Chance
T-stormsTonight

Low: 82 °F
Mostly Clear
Wednesday
High: 89 °F
Mostly Sunny
then Slight
Chance
T-stormsWednesday Night

Low: 83 °F
Partly Cloudy
Thursday

High: 89 °F
Mostly Sunny
Thursday Night

Low: 83 °F
Partly Cloudy
Friday

High: 89 °F
Chance
T-stormsFriday Night

Low: 84 °F
Mostly Cloudy
Saturday

High: 89 °F
Chance
T-storms
Detailed Forecast
This Afternoon
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 89. Southwest wind around 10 mph.
Tonight
Mostly clear, with a low around 82. Southwest wind 5 to 10 mph.
Wednesday
A 10 percent chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 89. West wind around 5 mph becoming south in the afternoon.
Wednesday Night
Partly cloudy, with a low around 83. Southwest wind 5 to 10 mph.
Thursday
Mostly sunny, with a high near 89. South wind around 5 mph.
Thursday Night
Partly cloudy, with a low around 83. South wind around 5 mph.
Friday
A 40 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 89. Southeast wind around 5 mph.
Friday Night
Mostly cloudy, with a low around 84. Southeast wind around 10 mph.
Saturday
A chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 89. Southeast wind around 5 mph.
Saturday Night
A slight chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 84. South wind 5 to 10 mph.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 88. South wind around 5 mph.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 83. Southwest wind around 5 mph.
Monday
Showers and thunderstorms likely. Partly sunny, with a high near 88. West wind 5 to 10 mph.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 82. West wind around 10 mph.
Tuesday
Showers and thunderstorms likely. Partly sunny, with a high near 88. Northwest wind 5 to 10 mph becoming southwest in the afternoon.
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
2:07 pm CDT Jul 7, 2026
4pm CDT Jul 7, 2026-6pm CDT Jul 14, 2026


