Current conditions at
Galliano, South Lafourche Airport (KGAO)
Lat: 29.44°NLon: 90.26°WElev: 0ft.
Mostly Cloudy
79°F
26°C
| Humidity | 79% |
| Wind Speed | SE 8 mph |
| Barometer | 30.04 in |
| Dewpoint | 72°F (22°C) |
| Visibility | 10.00 mi |
| Heat Index | 82°F (28°C) |
| Last update | 7 Mar 3:15 pm CST |
Extended Forecast for
15 Miles WSW Grand Isle LA
This Afternoon
High: 79 °F
Slight Chance
T-stormsTonight
Low: 66 °F
Chance
T-storms then
Chance
Showers and
Dense FogSunday
High: 78 °F
Chance
T-stormsSunday Night
Low: 66 °F
Mostly Cloudy
Monday
High: 79 °F
Mostly Sunny
Monday Night
Low: 66 °F
Partly Cloudy
Tuesday
High: 79 °F
Mostly Cloudy
Tuesday Night
Low: 67 °F
Cloudy
Wednesday
High: 80 °F
Partly Sunny
then Chance
T-storms
Detailed Forecast
This Afternoon
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 79. Southeast wind 5 to 10 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly after 4am. Widespread dense fog, mainly after 4am. Otherwise, increasing clouds, with a low around 66. Southeast wind around 5 mph.
Sunday
A 50 percent chance of showers and thunderstorms, mainly before 3pm. Cloudy, then gradually becoming mostly sunny, with a high near 78. Southeast wind around 5 mph. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
Mostly cloudy, with a low around 66. Calm wind becoming south around 5 mph.
Monday
Mostly sunny, with a high near 79. South wind around 5 mph.
Monday Night
Partly cloudy, with a low around 66. Southeast wind around 5 mph.
Tuesday
Mostly cloudy, with a high near 79. Southeast wind 5 to 10 mph.
Tuesday Night
Cloudy, with a low around 67. Southeast wind 5 to 10 mph.
Wednesday
A chance of showers and thunderstorms after noon. Partly sunny, with a high near 80. South wind 10 to 15 mph.
Wednesday Night
Showers likely and possibly a thunderstorm before midnight, then a chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 57. Southwest wind 10 to 15 mph becoming north after midnight.
Thursday
A chance of showers. Sunny, with a high near 71. Breezy, with a north wind 10 to 20 mph.
Thursday Night
Mostly clear, with a low around 55. North wind around 10 mph.
Friday
Sunny, with a high near 72. East wind 5 to 10 mph becoming south in the afternoon.
Friday Night
Mostly clear, with a low around 60. South wind around 5 mph.
Saturday
Sunny, with a high near 75. Southeast wind 5 to 10 mph.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
15 Miles WSW Grand Isle LA
29.13°N 90.2°W
29.13°N 90.2°W
11:34 am CST Mar 7, 2026
3pm CST Mar 7, 2026-6pm CDT Mar 14, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
