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

74°F

23°C

Humidity 85%
Wind Speed SE 3 mph
Barometer 30.11 in
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Last update 9 Mar 8:35 pm CDT
Extended Forecast for

2 Miles NE Grand Isle LA

  • Tonight

    Tonight: Patchy fog before 3am, then patchy fog after 4am. Otherwise, mostly cloudy, with a low around 69. South wind around 5 mph.

    Low: 69 °F

    Patchy Fog

  • Tuesday

    Tuesday: Patchy fog before 7am. Otherwise, partly sunny, with a high near 74. Southeast wind 5 to 10 mph.

    High: 74 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 70. Southeast wind 10 to 15 mph.

    Low: 70 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 75. Southeast wind 10 to 15 mph.

    High: 75 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm. Low around 61. Breezy, with a south wind 15 to 20 mph becoming west after midnight. Winds could gust as high as 35 mph. Chance of precipitation is 90%.

    Low: 61 °F

    Showers and
    Breezy

  • Thursday

    Thursday: A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 68. Breezy, with a north wind around 20 mph, with gusts as high as 35 mph.

    High: 68 °F

    Slight Chance
    Showers and
    Breezy

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 60. Breezy, with a north wind 15 to 20 mph.

    Low: 60 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Friday

    Friday: Sunny, with a high near 69. East wind 5 to 10 mph.

    High: 69 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 64. Southeast wind around 5 mph.

    Low: 64 °F

    Mostly Clear

Detailed Forecast

Tonight
Patchy fog before 3am, then patchy fog after 4am. Otherwise, mostly cloudy, with a low around 69. South wind around 5 mph.
Tuesday
Patchy fog before 7am. Otherwise, partly sunny, with a high near 74. Southeast wind 5 to 10 mph.
Tuesday Night
Mostly cloudy, with a low around 70. Southeast wind 10 to 15 mph.
Wednesday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 75. Southeast wind 10 to 15 mph.
Wednesday Night
Showers and possibly a thunderstorm. Low around 61. Breezy, with a south wind 15 to 20 mph becoming west after midnight. Winds could gust as high as 35 mph. Chance of precipitation is 90%.
Thursday
A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 68. Breezy, with a north wind around 20 mph, with gusts as high as 35 mph.
Thursday Night
Mostly clear, with a low around 60. Breezy, with a north wind 15 to 20 mph.
Friday
Sunny, with a high near 69. East wind 5 to 10 mph.
Friday Night
Mostly clear, with a low around 64. Southeast wind around 5 mph.
Saturday
Sunny, with a high near 72. Southeast wind 5 to 10 mph.
Saturday Night
Mostly clear, with a low around 68. Southeast wind 5 to 10 mph.
Sunday
Sunny, with a high near 74. South wind 5 to 10 mph.
Sunday Night
Partly cloudy, with a low around 64. South wind around 10 mph.
Monday
Partly sunny, with a high near 70. North wind around 10 mph becoming east in the afternoon.
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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:
5:52 pm CDT Mar 9, 2026
Forecast Valid:
8pm CDT Mar 9, 2026-6pm CDT Mar 16, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation