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

76°F

24°C

Humidity 60%
Wind Speed E 5 mph
Barometer 30.09 in
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 24 Mar 4:35 pm CDT
Extended Forecast for

15 Miles WSW Grand Isle LA

  • Tonight

    Tonight: Partly cloudy, with a low around 63. Southeast wind around 5 mph becoming calm in the evening.

    Low: 63 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 77. Calm wind becoming east around 5 mph in the morning.

    High: 77 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 64. East wind around 5 mph becoming calm in the evening.

    Low: 64 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 78. Light east wind becoming southeast 5 to 10 mph in the afternoon.

    High: 78 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 65. Southeast wind around 5 mph becoming calm.

    Low: 65 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 78. Calm wind becoming south around 5 mph in the afternoon.

    High: 78 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 61. Calm wind becoming north around 5 mph after midnight.

    Low: 61 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 75. North wind 10 to 15 mph.

    High: 75 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 61. Northeast wind around 10 mph.

    Low: 61 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 63. Southeast wind around 5 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 77. Calm wind becoming east around 5 mph in the morning.
Wednesday Night
Mostly clear, with a low around 64. East wind around 5 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 78. Light east wind becoming southeast 5 to 10 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 65. Southeast wind around 5 mph becoming calm.
Friday
Sunny, with a high near 78. Calm wind becoming south around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 61. Calm wind becoming north around 5 mph after midnight.
Saturday
Sunny, with a high near 75. North wind 10 to 15 mph.
Saturday Night
Mostly clear, with a low around 61. Northeast wind around 10 mph.
Sunday
Mostly sunny, with a high near 76. East wind 10 to 15 mph.
Sunday Night
Partly cloudy, with a low around 63. East wind around 10 mph, with gusts as high as 20 mph.
Monday
A slight chance of showers. Mostly sunny, with a high near 76. East wind 10 to 15 mph.
Monday Night
Partly cloudy, with a low around 64. East wind 5 to 10 mph.
Tuesday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 77. East wind 5 to 10 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
15 Miles WSW Grand Isle LA
 29.13°N 90.2°W
Last Update:
4:02 pm CDT Mar 24, 2026
Forecast Valid:
4pm CDT Mar 24, 2026-6pm CDT Mar 31, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation