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.

Rain

67°F

19°C

Humidity 89%
Wind Speed Calm
Barometer 30.19 in
Dewpoint 64°F (18°C)
Visibility 5.00 mi
Last update 11 Feb 11:55 am CST
Extended Forecast for

15 Miles WSW Grand Isle LA

  • This Afternoon

    This Afternoon: A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 69. Southwest wind around 5 mph.

    High: 69 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 55. Southwest wind around 5 mph becoming northeast after midnight.

    Low: 55 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Thursday

    Thursday: Widespread fog, mainly before 7am. Otherwise, partly sunny, with a high near 69. East wind around 5 mph.

    High: 69 °F

    Fog then
    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 55. East wind around 5 mph becoming calm.

    Low: 55 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 70. Calm wind becoming east around 5 mph in the morning.

    High: 70 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 57. Southeast wind around 5 mph.

    Low: 57 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 40 percent chance of showers after noon. Mostly cloudy, with a high near 72. Breezy, with a southeast wind 5 to 15 mph increasing to 15 to 25 mph in the afternoon.

    High: 72 °F

    Mostly Cloudy
    then Chance
    Showers and
    Breezy

  • Saturday Night

    Saturday Night: Showers likely, then showers and possibly a thunderstorm after midnight. Low around 58. Windy, with a south wind 25 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 90%.

    Low: 58 °F

    Showers and
    Windy

  • Sunday

    Sunday: A chance of showers and thunderstorms, mainly before noon. Mostly sunny, with a high near 71. Windy, with a west wind 25 to 30 mph becoming west 15 to 20 mph in the afternoon. Winds could gust as high as 45 mph.

    High: 71 °F

    Chance
    T-storms and
    Windy

Detailed Forecast

This Afternoon
A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 69. Southwest wind around 5 mph.
Tonight
Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 55. Southwest wind around 5 mph becoming northeast after midnight.
Thursday
Widespread fog, mainly before 7am. Otherwise, partly sunny, with a high near 69. East wind around 5 mph.
Thursday Night
Mostly cloudy, with a low around 55. East wind around 5 mph becoming calm.
Friday
Partly sunny, with a high near 70. Calm wind becoming east around 5 mph in the morning.
Friday Night
Mostly cloudy, with a low around 57. Southeast wind around 5 mph.
Saturday
A 40 percent chance of showers after noon. Mostly cloudy, with a high near 72. Breezy, with a southeast wind 5 to 15 mph increasing to 15 to 25 mph in the afternoon.
Saturday Night
Showers likely, then showers and possibly a thunderstorm after midnight. Low around 58. Windy, with a south wind 25 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 90%.
Sunday
A chance of showers and thunderstorms, mainly before noon. Mostly sunny, with a high near 71. Windy, with a west wind 25 to 30 mph becoming west 15 to 20 mph in the afternoon. Winds could gust as high as 45 mph.
Sunday Night
Mostly clear, with a low around 53. North wind 5 to 10 mph.
Washington's Birthday
Sunny, with a high near 68. North wind 5 to 10 mph.
Monday Night
Mostly clear, with a low around 55. East wind around 5 mph.
Tuesday
Mostly sunny, with a high near 72. 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:
11:32 am CST Feb 11, 2026
Forecast Valid:
12pm CST Feb 11, 2026-6pm CST Feb 17, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation