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.

Light Rain

60°F

16°C

Humidity 87%
Wind Speed N 15 G 28 mph
Barometer 30.23 in
Dewpoint 56°F (13°C)
Visibility 7.00 mi
Last update 19 Apr 8:35 am CDT
Extended Forecast for

15 Miles WSW Grand Isle LA

  • Today

    Today: A chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and noon. Mostly cloudy, with a high near 73. Breezy, with a northeast wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 40%.

    High: 73 °F

    Breezy.
    Chance
    Showers then
    Partly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 61. Northeast wind 10 to 15 mph.

    Low: 61 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 75. East wind around 15 mph, with gusts as high as 25 mph.

    High: 75 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 65. East wind around 10 mph.

    Low: 65 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 78. Southeast wind 10 to 15 mph.

    High: 78 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 66. East wind around 10 mph.

    Low: 66 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A slight chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 78. Southeast wind 10 to 15 mph. Chance of precipitation is 20%.

    High: 78 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 67. Southeast wind around 10 mph.

    Low: 67 °F

    Mostly Cloudy

  • Thursday

    Thursday: A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 79. Southeast wind 10 to 15 mph.

    High: 79 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

Detailed Forecast

Today
A chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and noon. Mostly cloudy, with a high near 73. Breezy, with a northeast wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 40%.
Tonight
Partly cloudy, with a low around 61. Northeast wind 10 to 15 mph.
Monday
Partly sunny, with a high near 75. East wind around 15 mph, with gusts as high as 25 mph.
Monday Night
Partly cloudy, with a low around 65. East wind around 10 mph.
Tuesday
Partly sunny, with a high near 78. Southeast wind 10 to 15 mph.
Tuesday Night
Mostly cloudy, with a low around 66. East wind around 10 mph.
Wednesday
A slight chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 78. Southeast wind 10 to 15 mph. Chance of precipitation is 20%.
Wednesday Night
Mostly cloudy, with a low around 67. Southeast wind around 10 mph.
Thursday
A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 79. Southeast wind 10 to 15 mph.
Thursday Night
Partly cloudy, with a low around 69. Southeast wind around 10 mph, with gusts as high as 20 mph.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 81. South wind 10 to 15 mph.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 69. South wind around 10 mph.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 81. South wind 5 to 10 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
15 Miles WSW Grand Isle LA
 29.13°N 90.2°W
Last Update:
4:57 am CDT Apr 19, 2026
Forecast Valid:
8am 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