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 Drizzle

61°F

16°C

Humidity 63%
Wind Speed NE 10 G 20 mph
Barometer 30.14 in
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Last update 6 Apr 5:55 am CDT
Extended Forecast for

15 Miles WSW Grand Isle LA

  • Today

    Today: Showers and possibly a thunderstorm before 1pm, then a slight chance of showers between 1pm and 2pm. High near 70. Breezy, with a northeast wind 15 to 20 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 70 °F

    Breezy.
    Showers then
    Chance
    Showers

  • Tonight

    Tonight: Mostly clear, with a low around 59. Northeast wind around 10 mph, with gusts as high as 20 mph.

    Low: 59 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 75. East wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 75 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers after 1am. Partly cloudy, with a low around 63. East wind around 15 mph.

    Low: 63 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 76. Breezy, with an east wind 15 to 20 mph. Chance of precipitation is 70%.

    High: 76 °F

    Showers
    Likely and
    Breezy

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 65. East wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.

    Low: 65 °F

    Showers
    Likely

  • Thursday

    Thursday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 77. East wind around 15 mph, with gusts as high as 25 mph.

    High: 77 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66. East wind 10 to 15 mph.

    Low: 66 °F

    Chance
    Showers

  • Friday

    Friday: A chance of showers and thunderstorms. Partly sunny, with a high near 77. East wind 10 to 15 mph.

    High: 77 °F

    Chance
    Showers

Detailed Forecast

Today
Showers and possibly a thunderstorm before 1pm, then a slight chance of showers between 1pm and 2pm. High near 70. Breezy, with a northeast wind 15 to 20 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Mostly clear, with a low around 59. Northeast wind around 10 mph, with gusts as high as 20 mph.
Tuesday
Mostly sunny, with a high near 75. East wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
A 20 percent chance of showers after 1am. Partly cloudy, with a low around 63. East wind around 15 mph.
Wednesday
A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 76. Breezy, with an east wind 15 to 20 mph. Chance of precipitation is 70%.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 65. East wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.
Thursday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 77. East wind around 15 mph, with gusts as high as 25 mph.
Thursday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66. East wind 10 to 15 mph.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 77. East wind 10 to 15 mph.
Friday Night
A slight chance of showers. Mostly cloudy, with a low around 66. East wind around 10 mph, with gusts as high as 20 mph.
Saturday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 79. East wind 10 to 15 mph.
Saturday Night
Partly cloudy, with a low around 67. Southeast wind around 10 mph.
Sunday
Sunny, with a high near 79. Southeast wind 10 to 15 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:
2:02 am CDT Apr 6, 2026
Forecast Valid:
6am CDT Apr 6, 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