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.

Overcast

66°F

19°C

Humidity 64%
Wind Speed N 14 G 18 mph
Barometer 30.15 in
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 5 Apr 11:35 pm CDT
Extended Forecast for

2 Miles NE Grand Isle LA

  • Tonight

    Tonight: A slight chance of showers before 1am, then a chance of showers after 3am. Cloudy, with a low around 62. Breezy, with a northeast wind around 20 mph. Chance of precipitation is 40%.

    Low: 62 °F

    Chance
    Showers and
    Breezy

  • Monday

    Monday: A 50 percent chance of showers, mainly before 11am. Cloudy, then gradually becoming mostly sunny, with a high near 68. Breezy, with a northeast wind around 20 mph. New precipitation amounts of less than a tenth of an inch possible.

    High: 68 °F

    Breezy.
    Chance
    Showers then
    Slight Chance
    Showers

  • Monday Night

    Monday Night: Mostly clear, with a low around 64. Northeast wind around 15 mph.

    Low: 64 °F

    Mostly Clear

  • Tuesday

    Tuesday: Partly sunny, with a high near 72. Breezy, with an east wind around 20 mph.

    High: 72 °F

    Partly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 67. Breezy, with an east wind 15 to 20 mph.

    Low: 67 °F

    Breezy.
    Partly Cloudy
    then Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 72. Breezy, with an east wind 20 to 25 mph. Chance of precipitation is 60%.

    High: 72 °F

    Breezy.
    Chance
    T-storms then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 67. Breezy, with an east wind around 25 mph. Chance of precipitation is 60%.

    Low: 67 °F

    Showers
    Likely and
    Breezy

  • Thursday

    Thursday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 73. Breezy, with an east wind 20 to 25 mph.

    High: 73 °F

    Chance
    Showers and
    Breezy

  • Thursday Night

    Thursday Night: A chance of showers, mainly after 1am. Mostly cloudy, with a low around 69. Breezy, with an east wind around 20 mph.

    Low: 69 °F

    Chance
    Showers and
    Breezy

Detailed Forecast

Tonight
A slight chance of showers before 1am, then a chance of showers after 3am. Cloudy, with a low around 62. Breezy, with a northeast wind around 20 mph. Chance of precipitation is 40%.
Monday
A 50 percent chance of showers, mainly before 11am. Cloudy, then gradually becoming mostly sunny, with a high near 68. Breezy, with a northeast wind around 20 mph. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
Mostly clear, with a low around 64. Northeast wind around 15 mph.
Tuesday
Partly sunny, with a high near 72. Breezy, with an east wind around 20 mph.
Tuesday Night
A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 67. Breezy, with an east wind 15 to 20 mph.
Wednesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 72. Breezy, with an east wind 20 to 25 mph. Chance of precipitation is 60%.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 67. Breezy, with an east wind around 25 mph. Chance of precipitation is 60%.
Thursday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 73. Breezy, with an east wind 20 to 25 mph.
Thursday Night
A chance of showers, mainly after 1am. Mostly cloudy, with a low around 69. Breezy, with an east wind around 20 mph.
Friday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 74. Breezy, with an east wind 15 to 20 mph.
Friday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 69. East wind around 15 mph.
Saturday
A slight chance of showers. Partly sunny, with a high near 75. East wind around 15 mph.
Saturday Night
Partly cloudy, with a low around 70. Southeast wind around 15 mph.
Sunday
Mostly sunny, with a high near 75. Southeast wind around 15 mph.
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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:
5:32 pm CDT Apr 5, 2026
Forecast Valid:
11pm CDT Apr 5, 2026-6pm CDT Apr 12, 2026
 
Forecast Discussion
 
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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