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.

Partly Cloudy

72°F

22°C

Humidity 77%
Wind Speed SE 7 mph
Barometer 30.05 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 15 Apr 4:15 am CDT
Extended Forecast for

15 Miles WSW Grand Isle LA

  • Today

    Today: Mostly sunny, with a high near 80. Southeast wind around 10 mph.

    High: 80 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 68. Southeast wind around 5 mph.

    Low: 68 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 80. Southeast wind 5 to 10 mph.

    High: 80 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 69. South wind around 5 mph.

    Low: 69 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 80. Southeast wind 5 to 10 mph.

    High: 80 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 69. Southeast wind around 5 mph.

    Low: 69 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 81. South wind 5 to 10 mph.

    High: 81 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 63. South wind around 5 mph becoming northwest after midnight.

    Low: 63 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: Cloudy, with a high near 74. Northeast wind 10 to 15 mph.

    High: 74 °F

    Cloudy

Detailed Forecast

Today
Mostly sunny, with a high near 80. Southeast wind around 10 mph.
Tonight
Mostly cloudy, with a low around 68. Southeast wind around 5 mph.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 80. Southeast wind 5 to 10 mph.
Thursday Night
Mostly clear, with a low around 69. South wind around 5 mph.
Friday
Sunny, with a high near 80. Southeast wind 5 to 10 mph.
Friday Night
Partly cloudy, with a low around 69. Southeast wind around 5 mph.
Saturday
Partly sunny, with a high near 81. South wind 5 to 10 mph.
Saturday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 63. South wind around 5 mph becoming northwest after midnight.
Sunday
Cloudy, with a high near 74. Northeast wind 10 to 15 mph.
Sunday Night
Mostly cloudy, with a low around 59. Northeast wind 10 to 15 mph.
Monday
Mostly cloudy, with a high near 74. East wind around 15 mph.
Monday Night
Mostly cloudy, with a low around 64. East wind around 10 mph.
Tuesday
Partly sunny, with a high near 77. East wind 10 to 15 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:
2:02 am CDT Apr 15, 2026
Forecast Valid:
4am CDT Apr 15, 2026-6pm CDT Apr 21, 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