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

62°F

17°C

Humidity 57%
Wind Speed E 14 G 21 mph
Barometer 30.18 in
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 19 Apr 12:15 pm CDT
Extended Forecast for

2 Miles NE Grand Isle LA

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 71. Breezy, with a northeast wind around 20 mph, with gusts as high as 30 mph.

    High: 71 °F

    Partly Sunny
    and Breezy

  • Tonight

    Tonight: Partly cloudy, with a low around 65. Breezy, with a northeast wind around 20 mph.

    Low: 65 °F

    Partly Cloudy
    and Breezy

  • Monday

    Monday: Partly sunny, with a high near 73. Breezy, with an east wind 15 to 20 mph.

    High: 73 °F

    Partly Sunny
    and Breezy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 68. East wind 10 to 15 mph.

    Low: 68 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 76. Southeast wind around 15 mph.

    High: 76 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 69. Southeast wind 10 to 15 mph.

    Low: 69 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A slight chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 74. Southeast wind 10 to 15 mph. Chance of precipitation is 20%.

    High: 74 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 69. Southeast wind around 15 mph.

    Low: 69 °F

    Partly Cloudy

  • Thursday

    Thursday: A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 75. Southeast wind around 15 mph.

    High: 75 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

Detailed Forecast

This Afternoon
Partly sunny, with a high near 71. Breezy, with a northeast wind around 20 mph, with gusts as high as 30 mph.
Tonight
Partly cloudy, with a low around 65. Breezy, with a northeast wind around 20 mph.
Monday
Partly sunny, with a high near 73. Breezy, with an east wind 15 to 20 mph.
Monday Night
Partly cloudy, with a low around 68. East wind 10 to 15 mph.
Tuesday
Partly sunny, with a high near 76. Southeast wind around 15 mph.
Tuesday Night
Mostly cloudy, with a low around 69. Southeast wind 10 to 15 mph.
Wednesday
A slight chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 74. Southeast wind 10 to 15 mph. Chance of precipitation is 20%.
Wednesday Night
Partly cloudy, with a low around 69. Southeast wind around 15 mph.
Thursday
A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 75. Southeast wind around 15 mph.
Thursday Night
Partly cloudy, with a low around 71. Southeast wind around 15 mph.
Friday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 77. South wind around 15 mph.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 71. South wind 10 to 15 mph.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 77. South wind around 10 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:
4:57 am CDT Apr 19, 2026
Forecast Valid:
12pm CDT Apr 19, 2026-6pm CDT Apr 25, 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