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

59°F

15°C

Humidity 89%
Wind Speed N 14 G 20 mph
Barometer 30.18 in
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 4 Feb 10:55 am CST
Extended Forecast for

15 Miles WSW Grand Isle LA

  • Today

    Today: A slight chance of showers between noon and 1pm. Mostly cloudy, then gradually becoming sunny, with a temperature falling to around 57 by 5pm. North wind 10 to 15 mph. Chance of precipitation is 20%.

    High: 65 °F⇓

    Slight Chance
    Showers

  • Tonight

    Tonight: Mostly clear, with a low around 36. North wind 10 to 15 mph, with gusts as high as 30 mph.

    Low: 36 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 54. North wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 54 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 44. Northwest wind 5 to 10 mph.

    Low: 44 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 65. West wind 10 to 15 mph.

    High: 65 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 49. West wind 5 to 10 mph becoming north after midnight.

    Low: 49 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 64. North wind 5 to 10 mph becoming east in the afternoon.

    High: 64 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 50. East wind around 5 mph becoming calm.

    Low: 50 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 66. East wind around 5 mph becoming south in the afternoon.

    High: 66 °F

    Sunny

Detailed Forecast

Today
A slight chance of showers between noon and 1pm. Mostly cloudy, then gradually becoming sunny, with a temperature falling to around 57 by 5pm. North wind 10 to 15 mph. Chance of precipitation is 20%.
Tonight
Mostly clear, with a low around 36. North wind 10 to 15 mph, with gusts as high as 30 mph.
Thursday
Sunny, with a high near 54. North wind 10 to 15 mph, with gusts as high as 25 mph.
Thursday Night
Mostly clear, with a low around 44. Northwest wind 5 to 10 mph.
Friday
Sunny, with a high near 65. West wind 10 to 15 mph.
Friday Night
Clear, with a low around 49. West wind 5 to 10 mph becoming north after midnight.
Saturday
Sunny, with a high near 64. North wind 5 to 10 mph becoming east in the afternoon.
Saturday Night
Mostly clear, with a low around 50. East wind around 5 mph becoming calm.
Sunday
Sunny, with a high near 66. East wind around 5 mph becoming south in the afternoon.
Sunday Night
Mostly clear, with a low around 54. Calm wind becoming south around 5 mph.
Monday
Sunny, with a high near 68. South wind around 5 mph.
Monday Night
Mostly cloudy, with a low around 55. South wind around 5 mph.
Tuesday
Mostly cloudy, with a high near 69. Southeast wind 5 to 10 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
15 Miles WSW Grand Isle LA
 29.13°N 90.2°W
Last Update:
10:13 am CST Feb 4, 2026
Forecast Valid:
11am CST Feb 4, 2026-6pm CST Feb 10, 2026
 
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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