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

79°F

26°C

Humidity 89%
Wind Speed E 3 mph
Barometer 30.04 in
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 1 Sep 10:35 pm CDT
Extended Forecast for

2 Miles NE Grand Isle LA

  • Tonight

    Tonight: Partly cloudy, with a steady temperature around 85. Southeast wind around 5 mph becoming calm after midnight.

    Low: 85 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms, mainly between 9am and 4pm. Mostly sunny, with a high near 88. Southeast wind around 5 mph.

    High: 88 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 82. Southeast wind around 5 mph becoming calm.

    Low: 82 °F

    Mostly Clear

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms. Sunny, with a high near 88. Northeast wind 5 to 10 mph.

    High: 88 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 50 percent chance of showers and thunderstorms. Mostly clear, with a low around 81. East wind around 5 mph.

    Low: 81 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 87. North wind around 5 mph becoming southeast in the afternoon. Chance of precipitation is 60%.

    High: 87 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 82. South wind around 5 mph.

    Low: 82 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms. Sunny, with a high near 88. West wind around 5 mph becoming south in the afternoon.

    High: 88 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 82. Southwest wind around 5 mph.

    Low: 82 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a steady temperature around 85. Southeast wind around 5 mph becoming calm after midnight.
Wednesday
A 40 percent chance of showers and thunderstorms, mainly between 9am and 4pm. Mostly sunny, with a high near 88. Southeast wind around 5 mph.
Wednesday Night
Mostly clear, with a low around 82. Southeast wind around 5 mph becoming calm.
Thursday
A 40 percent chance of showers and thunderstorms. Sunny, with a high near 88. Northeast wind 5 to 10 mph.
Thursday Night
A 50 percent chance of showers and thunderstorms. Mostly clear, with a low around 81. East wind around 5 mph.
Friday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 87. North wind around 5 mph becoming southeast in the afternoon. Chance of precipitation is 60%.
Friday Night
A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 82. South wind around 5 mph.
Saturday
A 40 percent chance of showers and thunderstorms. Sunny, with a high near 88. West wind around 5 mph becoming south in the afternoon.
Saturday Night
Mostly clear, with a low around 82. Southwest wind around 5 mph.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 88. Calm wind becoming southwest around 5 mph in the afternoon.
Sunday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 82. Southwest wind around 5 mph.
Labor Day
A chance of showers and thunderstorms. Mostly sunny, with a high near 88. Northwest wind around 5 mph becoming south in the afternoon.
Monday Night
Partly cloudy, with a low around 82. Southwest wind around 5 mph.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 88. West wind around 5 mph becoming south in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NE Grand Isle LA
 29.26°N 89.96°W
Last Update:
6:21 pm CDT Sep 1, 2026
Forecast Valid:
10pm CDT Sep 1, 2026-6pm CDT Sep 8, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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