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.

Mostly Cloudy

70°F

21°C

Humidity 87%
Wind Speed Calm
Barometer 30.10 in
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 26 Mar 4:35 am CDT
Extended Forecast for

15 Miles WSW Grand Isle LA

Dense Fog Advisory March 26, 04:50am until March 26, 10:00am
Click here for hazard details and duration
...
  •  
    Dense Fog Advisory March 26, 04:50am until March 26, 10:00am

    NOW until 10:00am Thu

    Dense Fog Advisory

  • Today

    High: 78 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 65. Southeast wind around 5 mph becoming calm.

    Low: 65 °F

    Partly Cloudy

  • Friday

    Friday: Patchy fog before 8am. Otherwise, sunny, with a high near 79. Calm wind becoming south around 5 mph in the afternoon.

    High: 79 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 62. Southwest wind 5 to 10 mph becoming north after midnight. Winds could gust as high as 25 mph.

    Low: 62 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 75. North wind around 15 mph, with gusts as high as 35 mph.

    High: 75 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 62. Northeast wind 5 to 10 mph.

    Low: 62 °F

    Mostly Clear

  • Sunday

    Sunday: A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 76. East wind 10 to 15 mph.

    High: 76 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Sunday Night

    Sunday Night: A 20 percent chance of showers. Partly cloudy, with a low around 64. East wind around 10 mph, with gusts as high as 20 mph.

    Low: 64 °F

    Slight Chance
    Showers

Detailed Forecast

Today
Mostly sunny, with a high near 78. Southeast wind around 5 mph.
Tonight
Partly cloudy, with a low around 65. Southeast wind around 5 mph becoming calm.
Friday
Patchy fog before 8am. Otherwise, sunny, with a high near 79. Calm wind becoming south around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 62. Southwest wind 5 to 10 mph becoming north after midnight. Winds could gust as high as 25 mph.
Saturday
Sunny, with a high near 75. North wind around 15 mph, with gusts as high as 35 mph.
Saturday Night
Mostly clear, with a low around 62. Northeast wind 5 to 10 mph.
Sunday
A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 76. East wind 10 to 15 mph.
Sunday Night
A 20 percent chance of showers. Partly cloudy, with a low around 64. East wind around 10 mph, with gusts as high as 20 mph.
Monday
A chance of showers and thunderstorms. Mostly sunny, with a high near 78. Southeast wind around 10 mph.
Monday Night
Mostly cloudy, with a low around 66. Southeast wind 5 to 10 mph.
Tuesday
A chance of showers and thunderstorms. Partly sunny, with a high near 79. Southeast wind 5 to 10 mph.
Tuesday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Southeast wind around 5 mph.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 79. 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:
4:34 am CDT Mar 26, 2026
Forecast Valid:
4am CDT Mar 26, 2026-6pm CDT Apr 1, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

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Chance of Precipitation