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

59°F

15°C

Humidity 63%
Wind Speed NE 3 mph
Barometer 30.16 in
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 13 Mar 8:35 am CDT
Extended Forecast for

4 Miles WSW Grand Isle LA

  • Today

    Today: Sunny, with a high near 68. East wind around 5 mph.

    High: 68 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 63. Calm wind becoming southeast around 5 mph after midnight.

    Low: 63 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 73. Southeast wind 5 to 10 mph.

    High: 73 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 68. Southeast wind 5 to 10 mph.

    Low: 68 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 76. South wind 10 to 15 mph.

    High: 76 °F

    Sunny

  • Sunday Night

    Sunday Night: A slight chance of showers before 1am, then a chance of showers and thunderstorms between 1am and 4am, then showers and possibly a thunderstorm after 4am. Low around 52. Breezy, with a south wind 15 to 20 mph becoming west after midnight. Chance of precipitation is 80%.

    Low: 52 °F

    Slight Chance
    Showers then
    Showers and
    Breezy

  • Monday

    Monday: Showers and possibly a thunderstorm before 7am, then a chance of showers and thunderstorms between 7am and 1pm. High near 62. Windy, with a north wind 25 to 30 mph. Chance of precipitation is 80%.

    High: 62 °F

    Showers and
    Windy then
    Chance
    Showers and
    Breezy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 46. Breezy, with a north wind 20 to 25 mph.

    Low: 46 °F

    Partly Cloudy
    and Breezy

  • Tuesday

    Tuesday: Partly sunny, with a high near 58. Breezy, with a northeast wind 15 to 20 mph.

    High: 58 °F

    Partly Sunny
    and Breezy
    then Mostly
    Sunny

Detailed Forecast

Today
Sunny, with a high near 68. East wind around 5 mph.
Tonight
Mostly clear, with a low around 63. Calm wind becoming southeast around 5 mph after midnight.
Saturday
Sunny, with a high near 73. Southeast wind 5 to 10 mph.
Saturday Night
Partly cloudy, with a low around 68. Southeast wind 5 to 10 mph.
Sunday
Sunny, with a high near 76. South wind 10 to 15 mph.
Sunday Night
A slight chance of showers before 1am, then a chance of showers and thunderstorms between 1am and 4am, then showers and possibly a thunderstorm after 4am. Low around 52. Breezy, with a south wind 15 to 20 mph becoming west after midnight. Chance of precipitation is 80%.
Monday
Showers and possibly a thunderstorm before 7am, then a chance of showers and thunderstorms between 7am and 1pm. High near 62. Windy, with a north wind 25 to 30 mph. Chance of precipitation is 80%.
Monday Night
Partly cloudy, with a low around 46. Breezy, with a north wind 20 to 25 mph.
Tuesday
Partly sunny, with a high near 58. Breezy, with a northeast wind 15 to 20 mph.
Tuesday Night
Mostly clear, with a low around 52. Northeast wind around 10 mph.
Wednesday
Mostly sunny, with a high near 64. East wind around 10 mph.
Wednesday Night
Partly cloudy, with a low around 58. Southeast wind around 5 mph.
Thursday
Sunny, with a high near 69. East wind around 5 mph becoming south in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WSW Grand Isle LA
 29.21°N 90.04°W
Last Update:
6:23 am CDT Mar 13, 2026
Forecast Valid:
8am CDT Mar 13, 2026-6pm CDT Mar 19, 2026
 
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Additional Resources

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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