Current conditions at

Galliano, South Lafourche Airport (KGAO)

Lat: 29.44°NLon: 90.26°WElev: 0ft.

Fair

71°F

22°C

Humidity 82%
Wind Speed SE 3 mph
Barometer 30.08 in
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 1 Apr 8:55 pm CDT
Extended Forecast for

Grand Isle LA

  • Tonight

    Tonight: Patchy fog after 5am.  Otherwise, partly cloudy, with a low around 70. Southeast wind around 15 mph.

    Low: 70 °F

    Partly Cloudy
    then Patchy
    Fog

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms, mainly after 1pm.  Patchy fog before 8am.  Otherwise, mostly sunny, with a high near 76. Southeast wind around 15 mph.

    High: 76 °F

    Chance
    T-storms and
    Patchy Fog

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am.  Mostly cloudy, with a low around 70. Southeast wind around 15 mph.  Chance of precipitation is 20%.

    Low: 70 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Friday

    Friday: A slight chance of showers, then a chance of showers and thunderstorms after 10am.  Partly sunny, with a high near 75. Southeast wind 10 to 15 mph.  Chance of precipitation is 30%.

    High: 75 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 71. Southeast wind around 10 mph.

    Low: 71 °F

    Partly Cloudy

  • Saturday

    Saturday: A slight chance of showers, then a chance of showers and thunderstorms after 10am.  Mostly sunny, with a high near 76. Southeast wind 10 to 15 mph.  Chance of precipitation is 40%.

    High: 76 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 40 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 69. Southeast wind 5 to 10 mph.

    Low: 69 °F

    Chance
    Showers

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm.  Mostly cloudy, with a high near 75. Southwest wind 5 to 10 mph becoming north in the afternoon.  Chance of precipitation is 70%.

    High: 75 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A chance of showers, with thunderstorms also possible after 1am.  Cloudy, with a low around 60. Breezy, with a north wind 15 to 20 mph.

    Low: 60 °F

    Chance
    Showers and
    Breezy

Detailed Forecast

Tonight
Patchy fog after 5am. Otherwise, partly cloudy, with a low around 70. Southeast wind around 15 mph.
Thursday
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 76. Southeast wind around 15 mph.
Thursday Night
A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Mostly cloudy, with a low around 70. Southeast wind around 15 mph. Chance of precipitation is 20%.
Friday
A slight chance of showers, then a chance of showers and thunderstorms after 10am. Partly sunny, with a high near 75. Southeast wind 10 to 15 mph. Chance of precipitation is 30%.
Friday Night
Partly cloudy, with a low around 71. Southeast wind around 10 mph.
Saturday
A slight chance of showers, then a chance of showers and thunderstorms after 10am. Mostly sunny, with a high near 76. Southeast wind 10 to 15 mph. Chance of precipitation is 40%.
Saturday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69. Southeast wind 5 to 10 mph.
Sunday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 75. Southwest wind 5 to 10 mph becoming north in the afternoon. Chance of precipitation is 70%.
Sunday Night
A chance of showers, with thunderstorms also possible after 1am. Cloudy, with a low around 60. Breezy, with a north wind 15 to 20 mph.
Monday
A slight chance of showers. Cloudy, with a high near 68. Breezy, with a northeast wind 15 to 20 mph.
Monday Night
Mostly cloudy, with a low around 62. Northeast wind 10 to 15 mph.
Tuesday
Mostly sunny, with a high near 72. Breezy, with a northeast wind 15 to 20 mph.
Tuesday Night
Partly cloudy, with a low around 65. East wind around 15 mph.
Wednesday
A slight chance of showers. Mostly sunny, with a high near 71. Breezy, with an east wind around 20 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Grand Isle LA
 29.23°N 89.99°W
2:07 pm CDT Apr 1, 2026
9pm CDT Apr 1, 2026-6pm CDT Apr 8, 2026
 
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Additional Resources

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Hourly Weather Forecast

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