Current conditions at

Galliano, South Lafourche Airport (KGAO)

Lat: 29.44°NLon: 90.26°WElev: 0ft.

Mostly Cloudy

73°F

23°C

Humidity 87%
Wind Speed SE 5 mph
Barometer 30.04 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 2 Apr 2:55 am CDT
Extended Forecast for

Grand Isle LA

  • Overnight

    Overnight: Patchy fog after 5am.  Otherwise, mostly clear, with a low around 70. Southeast wind around 15 mph.

    Low: 70 °F

    Patchy Fog

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms, mainly after 4pm.  Patchy fog before 8am.  Otherwise, mostly sunny, with a high near 75. Southeast wind around 15 mph.

    High: 75 °F

    Patchy Fog
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms before 7pm.  Mostly cloudy, with a low around 71. Southeast wind around 15 mph.

    Low: 71 °F

    Chance
    T-storms then
    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 76. Southeast wind 10 to 15 mph.

    High: 76 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 71. Southeast wind 10 to 15 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 chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am.  Mostly cloudy, with a low around 69. Southeast wind 5 to 10 mph.  Chance of precipitation is 60%.

    Low: 69 °F

    Showers
    Likely

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm.  Mostly cloudy, with a high near 74. South wind 5 to 10 mph becoming north in the morning.  Chance of precipitation is 70%.

    High: 74 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms.  Cloudy, with a low around 62. Breezy, with a northeast wind 15 to 20 mph.

    Low: 62 °F

    Chance
    Showers and
    Breezy

Detailed Forecast

Overnight
Patchy fog after 5am. Otherwise, mostly clear, with a low around 70. Southeast wind around 15 mph.
Thursday
A 30 percent chance of showers and thunderstorms, mainly after 4pm. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 75. Southeast wind around 15 mph.
Thursday Night
A 30 percent chance of showers and thunderstorms before 7pm. Mostly cloudy, with a low around 71. Southeast wind around 15 mph.
Friday
Partly sunny, with a high near 76. Southeast wind 10 to 15 mph.
Friday Night
Partly cloudy, with a low around 71. Southeast wind 10 to 15 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 chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 69. Southeast wind 5 to 10 mph. Chance of precipitation is 60%.
Sunday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 74. South wind 5 to 10 mph becoming north in the morning. Chance of precipitation is 70%.
Sunday Night
A chance of showers and thunderstorms. Cloudy, with a low around 62. Breezy, with a northeast wind 15 to 20 mph.
Monday
A chance of showers, mainly before 1pm. Cloudy, with a high near 67. Breezy, with a northeast wind 15 to 25 mph.
Monday Night
A slight chance of showers. Mostly cloudy, with a low around 61. Breezy, with a northeast wind 15 to 20 mph.
Tuesday
Mostly sunny, with a high near 71. Breezy, with a northeast wind 15 to 20 mph.
Tuesday Night
A slight chance of showers. Mostly cloudy, with a low around 65. Breezy, with an east wind 15 to 20 mph.
Wednesday
A chance of showers. Partly sunny, with a high near 71. Breezy, with an east wind around 25 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Grand Isle LA
 29.23°N 89.99°W
2:02 am CDT Apr 2, 2026
3am CDT Apr 2, 2026-6pm CDT Apr 8, 2026
 
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Additional Resources

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Hourly Weather Forecast

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