Current conditions at

Galliano, South Lafourche Airport (KGAO)

Lat: 29.44°NLon: 90.26°WElev: 0ft.

Fair

67°F

19°C

Humidity 91%
Wind Speed SW 5 mph
Barometer 30.00 in
Dewpoint 64°F (18°C)
Visibility 7.00 mi
Last update 7 Jan 12:55 am CST
Extended Forecast for

Grand Isle LA

Dense Fog Advisory January 7, 01:21am until January 7, 10:00am
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory January 7, 01:21am until January 7, 10:00am

    NOW until 10:00am Wed

    Dense Fog Advisory

  • Overnight

    Low: 64 °F

    Patchy Fog

  • Wednesday

    Wednesday: Mostly sunny, with a high near 72. Southwest wind around 5 mph.

    High: 72 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog after 2am.  Otherwise, partly cloudy, with a low around 65. South wind 5 to 10 mph.

    Low: 65 °F

    Partly Cloudy
    then Patchy
    Fog

  • Thursday

    Thursday: Patchy fog before 9am.  Otherwise, mostly sunny, with a high near 73. South wind 10 to 15 mph.

    High: 73 °F

    Patchy Fog
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: A 20 percent chance of showers.  Mostly cloudy, with a low around 66. Southeast wind 10 to 15 mph.

    Low: 66 °F

    Slight Chance
    Showers

  • Friday

    Friday: A 50 percent chance of showers.  Partly sunny, with a high near 75. South wind around 15 mph.

    High: 75 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm.  Mostly cloudy, with a low around 64. South wind around 15 mph.  Chance of precipitation is 60%.

    Low: 64 °F

    Showers
    Likely

  • Saturday

    Saturday: Showers likely, mainly before noon.  Mostly cloudy, with a high near 70. Southwest wind around 15 mph becoming north in the afternoon.  Chance of precipitation is 70%.

    High: 70 °F

    Showers
    Likely

Detailed Forecast

Overnight
Patchy fog before 3am. Otherwise, mostly cloudy, with a low around 64. West wind around 5 mph.
Wednesday
Mostly sunny, with a high near 72. Southwest wind around 5 mph.
Wednesday Night
Patchy fog after 2am. Otherwise, partly cloudy, with a low around 65. South wind 5 to 10 mph.
Thursday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 73. South wind 10 to 15 mph.
Thursday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 66. Southeast wind 10 to 15 mph.
Friday
A 50 percent chance of showers. Partly sunny, with a high near 75. South wind around 15 mph.
Friday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 64. South wind around 15 mph. Chance of precipitation is 60%.
Saturday
Showers likely, mainly before noon. Mostly cloudy, with a high near 70. Southwest wind around 15 mph becoming north in the afternoon. Chance of precipitation is 70%.
Saturday Night
A chance of showers. Cloudy, with a low around 52. Windy, with a north wind 15 to 20 mph increasing to 25 to 30 mph after midnight.
Sunday
Mostly cloudy, with a high near 58. Windy, with a north wind 20 to 30 mph.
Sunday Night
Mostly cloudy, with a low around 47. Breezy, with a north wind around 25 mph.
Monday
Partly sunny, with a high near 54. Breezy, with a northeast wind 15 to 20 mph decreasing to 10 to 15 mph in the afternoon.
Monday Night
Mostly cloudy, with a low around 49. Northeast wind around 10 mph.
Tuesday
Partly sunny, with a high near 58. North wind 5 to 10 mph.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Grand Isle LA
 29.23°N 89.99°W
12:26 am CST Jan 7, 2026
1am CST Jan 7, 2026-6pm CST Jan 13, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database