National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Galliano, South Lafourche Airport (KGAO)

Lat: 29.44°NLon: 90.26°WElev: 0ft.

Overcast

66°F

19°C

Humidity 77%
Wind Speed N 14 mph
Barometer 30.17 in
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 10 Jan 6:35 pm CST
Extended Forecast for

15 Miles SW Grand Isle LA

  • Tonight

    Tonight: Mostly cloudy, with a low around 49. Breezy, with a north wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: 49 °F

    Mostly Cloudy
    and Breezy

  • Sunday

    Sunday: Mostly sunny, with a high near 61. Breezy, with a north wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 61 °F

    Mostly Sunny
    and Breezy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 42. Northeast wind around 15 mph, with gusts as high as 25 mph.

    Low: 42 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 57. Northeast wind 10 to 15 mph.

    High: 57 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 44. Northeast wind 5 to 10 mph.

    Low: 44 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 60. Northeast wind around 5 mph becoming calm in the afternoon.

    High: 60 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers, mainly after midnight. Mostly cloudy, with a low around 50. Calm wind becoming west around 5 mph after midnight.

    Low: 50 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A 30 percent chance of showers, mainly before noon. Mostly sunny, with a high near 64. West wind 5 to 15 mph.

    High: 64 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 43. North wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 43 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 49. Breezy, with a north wind 15 to 20 mph, with gusts as high as 30 mph.
Sunday
Mostly sunny, with a high near 61. Breezy, with a north wind 15 to 20 mph, with gusts as high as 30 mph.
Sunday Night
Mostly cloudy, with a low around 42. Northeast wind around 15 mph, with gusts as high as 25 mph.
Monday
Mostly sunny, with a high near 57. Northeast wind 10 to 15 mph.
Monday Night
Mostly cloudy, with a low around 44. Northeast wind 5 to 10 mph.
Tuesday
Partly sunny, with a high near 60. Northeast wind around 5 mph becoming calm in the afternoon.
Tuesday Night
A 30 percent chance of showers, mainly after midnight. Mostly cloudy, with a low around 50. Calm wind becoming west around 5 mph after midnight.
Wednesday
A 30 percent chance of showers, mainly before noon. Mostly sunny, with a high near 64. West wind 5 to 15 mph.
Wednesday Night
Partly cloudy, with a low around 43. North wind 10 to 15 mph, with gusts as high as 25 mph.
Thursday
Sunny, with a high near 56. North wind 10 to 15 mph, with gusts as high as 25 mph.
Thursday Night
Mostly clear, with a low around 45. North wind 5 to 10 mph.
Friday
Sunny, with a high near 64. North wind 5 to 10 mph becoming south in the morning.
Friday Night
Mostly clear, with a low around 52. Southwest wind around 10 mph becoming north after midnight.
Saturday
Mostly sunny, with a high near 65. Northeast wind around 10 mph becoming east in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
15 Miles SW Grand Isle LA
 29.1°N 90.2°W
Last Update:
12:40 pm CST Jan 10, 2026
Forecast Valid:
6pm CST Jan 10, 2026-6pm CST Jan 17, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation