Current conditions at

Galliano, South Lafourche Airport (KGAO)

Lat: 29.44°NLon: 90.26°WElev: 0ft.

Fair

75°F

24°C

Humidity 91%
Wind Speed Calm
Barometer 30.02 in
Dewpoint 73°F (23°C)
Visibility 7.00 mi
Last update 16 Jun 9:55 pm CDT
Extended Forecast for

Grand Isle LA

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly between 4am and 5am.  Mostly cloudy, with a low around 82. South wind around 10 mph.

    Low: 82 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: Showers and thunderstorms likely before 1pm, then showers likely and possibly a thunderstorm between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm.  Partly sunny, with a high near 87. South wind around 10 mph.  Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 87 °F

    T-storms
    Likely

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers and thunderstorms, mainly after 1am.  Partly cloudy, with a steady temperature around 85. South wind around 10 mph.

    Low: 85 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm before 10am, then showers and thunderstorms likely between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm.  Mostly sunny, with a high near 87. South wind around 10 mph.  Chance of precipitation is 70%.

    High: 87 °F

    T-storms
    Likely

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 83. South wind around 10 mph.

    Low: 83 °F

    Chance
    T-storms

  • Juneteenth

    Juneteenth: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm.  Mostly sunny, with a high near 87. South wind 5 to 10 mph.  Chance of precipitation is 60%.

    High: 87 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms, mainly after 1am.  Mostly cloudy, with a low around 81. South wind around 5 mph.

    Low: 81 °F

    Chance
    T-storms

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms.  Mostly sunny, with a high near 87. West wind 5 to 10 mph becoming east in the morning.

    High: 87 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms.  Partly cloudy, with a low around 83. South wind 5 to 10 mph.

    Low: 83 °F

    Chance
    T-storms

Detailed Forecast

Tonight
A 40 percent chance of showers and thunderstorms, mainly between 4am and 5am. Mostly cloudy, with a low around 82. South wind around 10 mph.
Tuesday
Showers and thunderstorms likely before 1pm, then showers likely and possibly a thunderstorm between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 87. South wind around 10 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
A 40 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a steady temperature around 85. South wind around 10 mph.
Wednesday
Showers likely and possibly a thunderstorm before 10am, then showers and thunderstorms likely between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 87. South wind around 10 mph. Chance of precipitation is 70%.
Wednesday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 83. South wind around 10 mph.
Juneteenth
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 87. South wind 5 to 10 mph. Chance of precipitation is 60%.
Thursday Night
A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 81. South wind around 5 mph.
Friday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87. West wind 5 to 10 mph becoming east in the morning.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 83. South wind 5 to 10 mph.
Saturday
A chance of showers and thunderstorms. Sunny, with a high near 87. Southeast wind 5 to 10 mph.
Saturday Night
A chance of showers and thunderstorms. Mostly clear, with a low around 82. Southeast wind around 10 mph.
Sunday
Showers likely and possibly a thunderstorm. Sunny, with a high near 87. Southeast wind around 10 mph.
Sunday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 82. Southeast wind 10 to 15 mph.
Monday
Showers and thunderstorms likely. Mostly sunny, with a high near 87. East wind 10 to 15 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Grand Isle LA
 29.23°N 89.99°W
9:56 pm CDT Jun 16, 2025
10pm CDT Jun 16, 2025-6pm CDT Jun 23, 2025
 
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Additional Resources

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