Current conditions at

Galliano, South Lafourche Airport (KGAO)

Lat: 29.44°NLon: 90.26°WElev: 0ft.

Thunderstorm in Vicinity

84°F

29°C

Humidity 78%
Wind Speed SW 9 mph
Barometer 29.83 in
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index93°F (34°C)
Last update 2 Aug 5:15 am CDT
Extended Forecast for

5 Miles WSW Grand Isle LA

  • Overnight

    Overnight: Showers and thunderstorms likely. Some of the storms could produce heavy rainfall.  Partly cloudy, with a low around 80. Breezy, with a west wind around 20 mph.  Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 80 °F

    Heavy Rain
    and Breezy

  • Sunday

    Sunday: Showers and thunderstorms, mainly before 1pm. Some of the storms could produce heavy rainfall.  High near 88. West wind around 15 mph.  Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 88 °F

    Heavy Rain
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 81. West wind 5 to 15 mph.

    Low: 81 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 89. Northwest wind around 5 mph becoming southwest in the afternoon.

    High: 89 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 82. Southwest wind 5 to 10 mph.

    Low: 82 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 89. West wind around 5 mph.

    High: 89 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 82. Southwest wind around 5 mph.

    Low: 82 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 88. South wind around 5 mph.

    High: 88 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms after 1am.  Mostly clear, with a low around 82. South wind around 5 mph.

    Low: 82 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

Detailed Forecast

Overnight
Showers and thunderstorms likely. Some of the storms could produce heavy rainfall. Partly cloudy, with a low around 80. Breezy, with a west wind around 20 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
Showers and thunderstorms, mainly before 1pm. Some of the storms could produce heavy rainfall. High near 88. West wind around 15 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
Partly cloudy, with a low around 81. West wind 5 to 15 mph.
Monday
Sunny, with a high near 89. Northwest wind around 5 mph becoming southwest in the afternoon.
Monday Night
Mostly clear, with a low around 82. Southwest wind 5 to 10 mph.
Tuesday
Sunny, with a high near 89. West wind around 5 mph.
Tuesday Night
Mostly clear, with a low around 82. Southwest wind around 5 mph.
Wednesday
Sunny, with a high near 88. South wind around 5 mph.
Wednesday Night
A slight chance of showers and thunderstorms after 1am. Mostly clear, with a low around 82. South wind around 5 mph.
Thursday
A slight chance of showers and thunderstorms before 1pm. Sunny, with a high near 88. Calm wind becoming southeast around 5 mph in the morning.
Thursday Night
Mostly clear, with a low around 81. Southeast wind around 5 mph.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 88. East wind 5 to 10 mph.
Friday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 81. Southeast wind around 5 mph.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 88. East wind 5 to 10 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles WSW Grand Isle LA
 29.21°N 90.07°W
2:01 am CDT Aug 2, 2026
5am CDT Aug 2, 2026-6pm CDT Aug 8, 2026
 
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Additional Resources

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Hourly Weather Forecast

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