National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Galliano, South Lafourche Airport (KGAO)

Lat: 29.44°NLon: 90.26°WElev: 0ft.

Fair

82°F

28°C

Humidity 70%
Wind Speed SE 7 mph
Barometer 30.11 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 13 Oct 10:35 am CDT
Extended Forecast for

3 Miles NE Grand Isle LA

  • Today

    Today: Sunny, with a high near 81. Southeast wind around 5 mph.

    High: 81 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 75. Southeast wind around 5 mph.

    Low: 75 °F

    Mostly Clear

  • Wednesday

    Wednesday: Patchy fog before 11am. Otherwise, sunny, with a high near 82. East wind 5 to 10 mph.

    High: 82 °F

    Patchy Fog
    then Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 76. East wind around 10 mph.

    Low: 76 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 82. East wind around 10 mph.

    High: 82 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 75. East wind 5 to 10 mph.

    Low: 75 °F

    Mostly Clear

  • Friday

    Friday: A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 82. Northeast wind around 10 mph.

    High: 82 °F

    Slight Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 70. Windy, with a light and variable wind becoming northeast 25 to 30 mph in the evening.

    Low: 70 °F

    Partly Cloudy
    then Partly
    Cloudy and
    Windy

  • Saturday

    Saturday: Sunny, with a high near 76. Windy, with a northeast wind 25 to 30 mph, with gusts as high as 40 mph.

    High: 76 °F

    Sunny and
    Windy

Detailed Forecast

Today
Sunny, with a high near 81. Southeast wind around 5 mph.
Tonight
Mostly clear, with a low around 75. Southeast wind around 5 mph.
Wednesday
Patchy fog before 11am. Otherwise, sunny, with a high near 82. East wind 5 to 10 mph.
Wednesday Night
Mostly clear, with a low around 76. East wind around 10 mph.
Thursday
Sunny, with a high near 82. East wind around 10 mph.
Thursday Night
Mostly clear, with a low around 75. East wind 5 to 10 mph.
Friday
A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 82. Northeast wind around 10 mph.
Friday Night
Partly cloudy, with a low around 70. Windy, with a light and variable wind becoming northeast 25 to 30 mph in the evening.
Saturday
Sunny, with a high near 76. Windy, with a northeast wind 25 to 30 mph, with gusts as high as 40 mph.
Saturday Night
Mostly clear, with a low around 72. Breezy, with a northeast wind 20 to 25 mph.
Sunday
A chance of showers. Mostly sunny, with a high near 78. Breezy, with an east wind around 25 mph.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 74. Windy, with an east wind 25 to 30 mph.
Monday
A chance of showers and thunderstorms. Mostly sunny, with a high near 79. Windy, with an east wind 25 to 30 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NE Grand Isle LA
 29.26°N 89.96°W
Last Update:
9:07 am CDT Oct 13, 2026
Forecast Valid:
10am CDT Oct 13, 2026-6pm CDT Oct 19, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation