Current conditions at

Galliano, South Lafourche Airport (KGAO)

Lat: 29.44°NLon: 90.26°WElev: 0ft.

Fair

70°F

21°C

Humidity 88%
Wind Speed S 3 mph
Barometer 30.03 in
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 28 Dec 6:55 pm CST
Extended Forecast for

Grand Isle LA

Wind Advisory December 29, 03:00am until December 29, 03:00pm
Click here for hazard details and duration
Wind Advisory
  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5am.  Patchy fog after 11pm.  Otherwise, mostly cloudy, with a low around 55. Breezy, with a south wind 5 to 10 mph becoming northwest 15 to 20 mph after midnight. Winds could gust as high as 30 mph.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 55 °F

    Showers
    Likely and
    Patchy Fog

  • Monday

    Monday: A 20 percent chance of showers before 7am.  Mostly sunny, with a temperature falling to around 55 by 4pm. Windy, with a north wind 25 to 30 mph.

    High: 65 °F

    Slight Chance
    Showers and
    Windy then
    Mostly Sunny
    and Breezy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 42. Windy, with a north wind 25 to 30 mph.

    Low: 42 °F

    Partly Cloudy
    and Windy

  • Tuesday

    Tuesday: Sunny, with a high near 51. Breezy, with a north wind 15 to 25 mph.

    High: 51 °F

    Sunny and
    Breezy then
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 44. North wind 10 to 15 mph.

    Low: 44 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 56. North wind 5 to 10 mph becoming west in the afternoon.

    High: 56 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 51. West wind around 5 mph.

    Low: 51 °F

    Mostly Clear

  • New Year's Day

    New Year's Day: Sunny, with a high near 64. West wind around 5 mph.

    High: 64 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 60. Southwest wind around 5 mph.

    Low: 60 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5am. Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 55. Breezy, with a south wind 5 to 10 mph becoming northwest 15 to 20 mph after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
A 20 percent chance of showers before 7am. Mostly sunny, with a temperature falling to around 55 by 4pm. Windy, with a north wind 25 to 30 mph.
Monday Night
Partly cloudy, with a low around 42. Windy, with a north wind 25 to 30 mph.
Tuesday
Sunny, with a high near 51. Breezy, with a north wind 15 to 25 mph.
Tuesday Night
Mostly clear, with a low around 44. North wind 10 to 15 mph.
Wednesday
Sunny, with a high near 56. North wind 5 to 10 mph becoming west in the afternoon.
Wednesday Night
Mostly clear, with a low around 51. West wind around 5 mph.
New Year's Day
Sunny, with a high near 64. West wind around 5 mph.
Thursday Night
Mostly cloudy, with a low around 60. Southwest wind around 5 mph.
Friday
A slight chance of showers after noon. Partly sunny, with a high near 69. South wind 5 to 10 mph.
Friday Night
A chance of showers. Partly cloudy, with a low around 63. South wind 10 to 15 mph.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 69. Southwest wind 10 to 15 mph.
Saturday Night
Partly cloudy, with a low around 58. West wind around 10 mph becoming northwest after midnight.
Sunday
Sunny, with a high near 65. North wind around 10 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Grand Isle LA
 29.23°N 89.99°W
11:25 am CST Dec 28, 2025
7pm CST Dec 28, 2025-6pm CST Jan 4, 2026
 
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Additional Resources

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