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

Hazardous Weather Conditions

Current conditions at

Galliano, South Lafourche Airport (KGAO)

Lat: 29.44°NLon: 90.26°WElev: 0ft.

Fog/Mist

68°F

20°C

Humidity 100%
Wind Speed SE 3 mph
Barometer 30.05 in
Dewpoint 68°F (20°C)
Visibility 1.25 mi
Last update 14 Oct 12:55 am CDT
Extended Forecast for

13 Miles WSW Grand Isle LA

Dense Fog Advisory October 14, 04:00am until October 14, 10:00am
Click here for hazard details and duration
Dense Fog Advisory

  • Overnight

    Overnight: Areas of dense fog after 4am. Otherwise, mostly clear, with a low around 71. Southeast wind around 5 mph becoming calm.

    Low: 71 °F

    Areas Dense
    Fog

  • Wednesday

    Wednesday: Areas of dense fog before 11am. Otherwise, sunny, with a high near 83. Light east wind increasing to 5 to 10 mph in the morning.

    High: 83 °F

    Areas Dense
    Fog then
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 72. East wind around 5 mph.

    Low: 72 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 83. East wind 5 to 10 mph.

    High: 83 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 71. East wind around 5 mph becoming calm after midnight.

    Low: 71 °F

    Partly Cloudy

  • Friday

    Friday: A chance of showers and thunderstorms. Partly sunny, with a high near 83. Northeast wind 5 to 10 mph. Chance of precipitation is 30%.

    High: 83 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 63. Breezy, with a light and variable wind becoming north 15 to 20 mph after midnight. Winds could gust as high as 40 mph.

    Low: 63 °F

    Partly Cloudy
    then Partly
    Cloudy and
    Breezy

  • Saturday

    Saturday: Sunny, with a high near 76. Breezy, with a northeast wind 20 to 25 mph, with gusts as high as 35 mph.

    High: 76 °F

    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 66. Northeast wind around 15 mph, with gusts as high as 30 mph.

    Low: 66 °F

    Partly Cloudy

Detailed Forecast

Overnight
Areas of dense fog after 4am. Otherwise, mostly clear, with a low around 71. Southeast wind around 5 mph becoming calm.
Wednesday
Areas of dense fog before 11am. Otherwise, sunny, with a high near 83. Light east wind increasing to 5 to 10 mph in the morning.
Wednesday Night
Mostly clear, with a low around 72. East wind around 5 mph.
Thursday
Sunny, with a high near 83. East wind 5 to 10 mph.
Thursday Night
Partly cloudy, with a low around 71. East wind around 5 mph becoming calm after midnight.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 83. Northeast wind 5 to 10 mph. Chance of precipitation is 30%.
Friday Night
Partly cloudy, with a low around 63. Breezy, with a light and variable wind becoming north 15 to 20 mph after midnight. Winds could gust as high as 40 mph.
Saturday
Sunny, with a high near 76. Breezy, with a northeast wind 20 to 25 mph, with gusts as high as 35 mph.
Saturday Night
Partly cloudy, with a low around 66. Northeast wind around 15 mph, with gusts as high as 30 mph.
Sunday
A chance of showers after 1pm. Partly sunny, with a high near 80. Breezy, with an east wind 15 to 20 mph, with gusts as high as 30 mph.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 69. Breezy, with an east wind 15 to 20 mph, with gusts as high as 30 mph.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 81. Breezy, with an east wind 15 to 20 mph, with gusts as high as 30 mph.
Monday Night
A slight chance of showers. Mostly cloudy, with a low around 70. Breezy, with an east wind 15 to 20 mph.
Tuesday
A chance of showers. Partly sunny, with a high near 81. Breezy, with an east wind 15 to 20 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
13 Miles WSW Grand Isle LA
 29.15°N 90.17°W
Last Update:
11:36 pm CDT Oct 13, 2026
Forecast Valid:
1am CDT Oct 14, 2026-6pm CDT Oct 20, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation