Current conditions at

Galliano, South Lafourche Airport (KGAO)

Lat: 29.44°NLon: 90.26°WElev: 0ft.

Mostly Cloudy

87°F

31°C

Humidity 61%
Wind Speed N 6 mph
Barometer 30.06 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index93°F (34°C)
Last update 7 Jul 4:15 pm CDT
Extended Forecast for

Grand Isle LA

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms.  Sunny, with a high near 89. Southwest wind around 10 mph.

    High: 89 °F

    Slight Chance
    T-storms

  • Tonight

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

    Low: 82 °F

    Mostly Clear

  • Wednesday

    Wednesday: A 10 percent chance of showers and thunderstorms after 5pm.  Mostly sunny, with a high near 89. West wind around 5 mph becoming south in the afternoon.

    High: 89 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 83. Southwest wind 5 to 10 mph.

    Low: 83 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 89. South wind around 5 mph.

    High: 89 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 83. South wind around 5 mph.

    Low: 83 °F

    Partly Cloudy

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms, mainly before 1pm.  Partly sunny, with a high near 89. Southeast wind around 5 mph.

    High: 89 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 84. Southeast wind around 10 mph.

    Low: 84 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of showers and thunderstorms, mainly before 1pm.  Partly sunny, with a high near 89. Southeast wind around 5 mph.

    High: 89 °F

    Chance
    T-storms

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 89. Southwest wind around 10 mph.
Tonight
Mostly clear, with a low around 82. Southwest wind 5 to 10 mph.
Wednesday
A 10 percent chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 89. West wind around 5 mph becoming south in the afternoon.
Wednesday Night
Partly cloudy, with a low around 83. Southwest wind 5 to 10 mph.
Thursday
Mostly sunny, with a high near 89. South wind around 5 mph.
Thursday Night
Partly cloudy, with a low around 83. South wind around 5 mph.
Friday
A 40 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 89. Southeast wind around 5 mph.
Friday Night
Mostly cloudy, with a low around 84. Southeast wind around 10 mph.
Saturday
A chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 89. Southeast wind around 5 mph.
Saturday Night
A slight chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 84. South wind 5 to 10 mph.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 88. South wind around 5 mph.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 83. Southwest wind around 5 mph.
Monday
Showers and thunderstorms likely. Partly sunny, with a high near 88. West wind 5 to 10 mph.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 82. West wind around 10 mph.
Tuesday
Showers and thunderstorms likely. Partly sunny, with a high near 88. Northwest wind 5 to 10 mph becoming southwest in the afternoon.
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ABOUT THIS FORECAST

 
Point Forecast:
Grand Isle LA
 29.23°N 89.99°W
2:07 pm CDT Jul 7, 2026
4pm CDT Jul 7, 2026-6pm CDT Jul 14, 2026
 
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Additional Resources

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Hourly Weather Forecast

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