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.

Fair

69°F

21°C

Humidity 80%
Wind Speed E 3 mph
Barometer 30.19 in
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 10 Apr 1:15 am CDT
Extended Forecast for

15 Miles WSW Grand Isle LA

  • Overnight

    Overnight: Partly cloudy, with a steady temperature around 68. East wind around 10 mph, with gusts as high as 20 mph.

    Low: 68 °F

    Partly Cloudy

  • Friday

    Friday: A slight chance of showers and thunderstorms between 3pm and 4pm. Partly sunny, with a high near 78. East wind 10 to 15 mph. Chance of precipitation is 20%.

    High: 78 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: Partly cloudy, with a low around 65. East wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 65 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 78. East wind 10 to 15 mph.

    High: 78 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 66. Southeast wind around 10 mph.

    Low: 66 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 79. Southeast wind 10 to 15 mph.

    High: 79 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 68. Southeast wind around 10 mph, with gusts as high as 20 mph.

    Low: 68 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 80. Southeast wind around 10 mph.

    High: 80 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 68. Southeast wind around 10 mph.

    Low: 68 °F

    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a steady temperature around 68. East wind around 10 mph, with gusts as high as 20 mph.
Friday
A slight chance of showers and thunderstorms between 3pm and 4pm. Partly sunny, with a high near 78. East wind 10 to 15 mph. Chance of precipitation is 20%.
Friday Night
Partly cloudy, with a low around 65. East wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday
Sunny, with a high near 78. East wind 10 to 15 mph.
Saturday Night
Mostly clear, with a low around 66. Southeast wind around 10 mph.
Sunday
Sunny, with a high near 79. Southeast wind 10 to 15 mph.
Sunday Night
Partly cloudy, with a low around 68. Southeast wind around 10 mph, with gusts as high as 20 mph.
Monday
Partly sunny, with a high near 80. Southeast wind around 10 mph.
Monday Night
Mostly clear, with a low around 68. Southeast wind around 10 mph.
Tuesday
Sunny, with a high near 80. Southeast wind around 10 mph.
Tuesday Night
Mostly clear, with a low around 69. Southeast wind around 10 mph.
Wednesday
Mostly sunny, with a high near 80. Southeast wind around 10 mph.
Wednesday Night
Partly cloudy, with a low around 68. Southeast wind around 5 mph.
Thursday
Mostly sunny, with a high near 79. Southeast wind 5 to 10 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
15 Miles WSW Grand Isle LA
 29.13°N 90.2°W
Last Update:
5:17 pm CDT Apr 9, 2026
Forecast Valid:
1am CDT Apr 10, 2026-6pm CDT Apr 16, 2026
 
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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