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.

Mostly Cloudy

77°F

25°C

Humidity 77%
Wind Speed SE 9 G 17 mph
Barometer 30.06 in
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 2 Apr 5:35 pm CDT
Extended Forecast for

2 Miles NE Grand Isle LA

  • This Afternoon

    This Afternoon: A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 75. Southeast wind around 15 mph.

    High: 75 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 7pm. Mostly cloudy, with a low around 70. Southeast wind 10 to 15 mph.

    Low: 70 °F

    Chance
    T-storms then
    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 75. Southeast wind 10 to 15 mph.

    High: 75 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Patchy fog between 9pm and midnight. Otherwise, partly cloudy, with a low around 70. Southeast wind 10 to 15 mph.

    Low: 70 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 76. Southeast wind 10 to 15 mph.

    High: 76 °F

    Chance
    Showers then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 69. Southeast wind 5 to 10 mph. Chance of precipitation is 60%.

    Low: 69 °F

    Showers
    Likely

  • Sunday

    Sunday: Showers and possibly a thunderstorm. High near 74. Southeast wind 5 to 10 mph becoming north in the afternoon. Chance of precipitation is 80%.

    High: 74 °F

    Showers

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms. Cloudy, with a low around 60. Breezy, with a northeast wind 15 to 20 mph. Chance of precipitation is 40%.

    Low: 60 °F

    Chance
    Showers and
    Breezy

  • Monday

    Monday: A chance of showers. Cloudy, with a high near 66. Breezy, with a northeast wind 15 to 25 mph.

    High: 66 °F

    Chance
    Showers and
    Breezy

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 75. Southeast wind around 15 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly before 7pm. Mostly cloudy, with a low around 70. Southeast wind 10 to 15 mph.
Friday
Mostly sunny, with a high near 75. Southeast wind 10 to 15 mph.
Friday Night
Patchy fog between 9pm and midnight. Otherwise, partly cloudy, with a low around 70. Southeast wind 10 to 15 mph.
Saturday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 76. Southeast wind 10 to 15 mph.
Saturday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 69. Southeast wind 5 to 10 mph. Chance of precipitation is 60%.
Sunday
Showers and possibly a thunderstorm. High near 74. Southeast wind 5 to 10 mph becoming north in the afternoon. Chance of precipitation is 80%.
Sunday Night
A chance of showers and thunderstorms. Cloudy, with a low around 60. Breezy, with a northeast wind 15 to 20 mph. Chance of precipitation is 40%.
Monday
A chance of showers. Cloudy, with a high near 66. Breezy, with a northeast wind 15 to 25 mph.
Monday Night
A chance of showers, mainly before 1am. Mostly cloudy, with a low around 61. Breezy, with a northeast wind 15 to 20 mph.
Tuesday
Partly sunny, with a high near 71. Breezy, with a northeast wind around 20 mph.
Tuesday Night
Partly cloudy, with a low around 64. Breezy, with a northeast wind 15 to 20 mph.
Wednesday
A slight chance of showers. Mostly sunny, with a high near 71. Breezy, with an east wind around 20 mph.
Wednesday Night
A slight chance of showers. Mostly clear, with a low around 65. Breezy, with an east wind around 20 mph.
Thursday
A slight chance of showers. Mostly sunny, with a high near 71. Breezy, with an east wind 20 to 25 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NE Grand Isle LA
 29.26°N 89.96°W
Last Update:
2:02 pm CDT Apr 2, 2026
Forecast Valid:
5pm CDT Apr 2, 2026-6pm CDT Apr 9, 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