National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Galliano, South Lafourche Airport (KGAO)

Lat: 29.44°NLon: 90.26°WElev: 0ft.

Mostly Cloudy

69°F

21°C

Humidity 88%
Wind Speed Calm
Barometer 30.08 in
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 27 Mar 1:55 am CDT
Extended Forecast for

2 Miles NE Grand Isle LA

Dense Fog Advisory until March 27, 09:00am
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory until March 27, 09:00am

    NOW until 9:00am Fri

    Dense Fog Advisory

  • Overnight

    Low: 68 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 74. Calm wind becoming south around 5 mph in the afternoon.

    High: 74 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 63. Southwest wind 5 to 10 mph becoming north 10 to 15 mph after midnight.

    Low: 63 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 70. Breezy, with a northeast wind 15 to 25 mph.

    High: 70 °F

    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 66. Northeast wind 10 to 15 mph.

    Low: 66 °F

    Mostly Clear

  • Sunday

    Sunday: A 20 percent chance of showers. Mostly sunny, with a high near 72. East wind around 15 mph.

    High: 72 °F

    Slight Chance
    Showers

  • Sunday Night

    Sunday Night: A 20 percent chance of showers before 1am. Partly cloudy, with a low around 68. East wind around 15 mph.

    Low: 68 °F

    Slight Chance
    Showers

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 74. Southeast wind 10 to 15 mph.

    High: 74 °F

    Slight Chance
    T-storms then
    Chance
    Showers

Detailed Forecast

Overnight
Partly cloudy, with a low around 68. Southwest wind around 5 mph.
Friday
Sunny, with a high near 74. Calm wind becoming south around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 63. Southwest wind 5 to 10 mph becoming north 10 to 15 mph after midnight.
Saturday
Sunny, with a high near 70. Breezy, with a northeast wind 15 to 25 mph.
Saturday Night
Mostly clear, with a low around 66. Northeast wind 10 to 15 mph.
Sunday
A 20 percent chance of showers. Mostly sunny, with a high near 72. East wind around 15 mph.
Sunday Night
A 20 percent chance of showers before 1am. Partly cloudy, with a low around 68. East wind around 15 mph.
Monday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 74. Southeast wind 10 to 15 mph.
Monday Night
Mostly cloudy, with a low around 70. Southeast wind 10 to 15 mph.
Tuesday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 74. Southeast wind around 10 mph.
Tuesday Night
Partly cloudy, with a low around 69. Southeast wind 10 to 15 mph.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 75. Southeast wind around 10 mph.
Wednesday Night
Partly cloudy, with a low around 69. Southeast wind 10 to 15 mph.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 75. Southeast wind 10 to 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:
2:02 am CDT Mar 27, 2026
Forecast Valid:
2am CDT Mar 27, 2026-6pm CDT Apr 2, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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