Current conditions at

Galliano, South Lafourche Airport (KGAO)

Lat: 29.44°NLon: 90.26°WElev: 0ft.

Overcast

58°F

14°C

Humidity 76%
Wind Speed NE 7 mph
Barometer 30.02 in
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 16 Feb 4:35 am CST
Extended Forecast for

Grand Isle LA

  • Washington's Birthday

    Washington's Birthday: Mostly cloudy, with a high near 63. Northeast wind 5 to 10 mph.

    High: 63 °F

    Mostly Cloudy

  • Tonight

    Tonight: Increasing clouds, with a low around 58. Northeast wind around 5 mph becoming southeast after midnight.

    Low: 58 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Cloudy, then gradually becoming mostly sunny, with a high near 68. Southeast wind around 5 mph.

    High: 68 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 64. South wind 5 to 10 mph.

    Low: 64 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 70. Southwest wind 5 to 10 mph.

    High: 70 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers before midnight.  Mostly cloudy, with a low around 65. South wind 5 to 15 mph.

    Low: 65 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 71. South wind 10 to 15 mph.

    High: 71 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of showers, mainly after midnight.  Mostly cloudy, with a low around 66. South wind 10 to 15 mph.

    Low: 66 °F

    Chance
    Showers

  • Friday

    Friday: A chance of showers.  Mostly cloudy, with a high near 71. South wind around 10 mph.

    High: 71 °F

    Chance
    Showers

Detailed Forecast

Washington's Birthday
Mostly cloudy, with a high near 63. Northeast wind 5 to 10 mph.
Tonight
Increasing clouds, with a low around 58. Northeast wind around 5 mph becoming southeast after midnight.
Tuesday
Cloudy, then gradually becoming mostly sunny, with a high near 68. Southeast wind around 5 mph.
Tuesday Night
Mostly cloudy, with a low around 64. South wind 5 to 10 mph.
Wednesday
Mostly sunny, with a high near 70. Southwest wind 5 to 10 mph.
Wednesday Night
A 20 percent chance of showers before midnight. Mostly cloudy, with a low around 65. South wind 5 to 15 mph.
Thursday
Mostly sunny, with a high near 71. South wind 10 to 15 mph.
Thursday Night
A 30 percent chance of showers, mainly after midnight. Mostly cloudy, with a low around 66. South wind 10 to 15 mph.
Friday
A chance of showers. Mostly cloudy, with a high near 71. South wind around 10 mph.
Friday Night
A chance of showers, mainly after midnight. Mostly cloudy, with a low around 64. South wind around 10 mph.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 71. South wind 10 to 15 mph becoming north in the afternoon.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 58. North wind 10 to 15 mph.
Sunday
A chance of showers. Mostly sunny, with a high near 65. North wind around 15 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Grand Isle LA
 29.23°N 89.99°W
11:36 pm CST Feb 15, 2026
4am CST Feb 16, 2026-6pm CST Feb 22, 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