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.

Mostly Cloudy

82°F

28°C

Humidity 66%
Wind Speed S 6 mph
Barometer 29.96 in
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 13 May 6:15 pm CDT
Extended Forecast for

5 Miles WSW Grand Isle LA

  • Tonight

    Tonight: Clear, with a low around 73. Southwest wind around 5 mph becoming north after midnight.

    Low: 73 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 81. North wind around 5 mph becoming south in the afternoon.

    High: 81 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 74. Southwest wind around 5 mph becoming calm in the evening.

    Low: 74 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 80. Light south wind becoming southeast 5 to 10 mph in the morning.

    High: 80 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 74. Southeast wind 5 to 10 mph.

    Low: 74 °F

    Partly Cloudy

  • Saturday

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

    High: 80 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 75. Southeast wind around 10 mph.

    Low: 75 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 78. Southeast wind 10 to 15 mph.

    High: 78 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 77. Southeast wind around 15 mph.

    Low: 77 °F

    Partly Cloudy

Detailed Forecast

Tonight
Clear, with a low around 73. Southwest wind around 5 mph becoming north after midnight.
Thursday
Sunny, with a high near 81. North wind around 5 mph becoming south in the afternoon.
Thursday Night
Mostly clear, with a low around 74. Southwest wind around 5 mph becoming calm in the evening.
Friday
Sunny, with a high near 80. Light south wind becoming southeast 5 to 10 mph in the morning.
Friday Night
Partly cloudy, with a low around 74. Southeast wind 5 to 10 mph.
Saturday
Mostly sunny, with a high near 80. Southeast wind around 10 mph.
Saturday Night
Partly cloudy, with a low around 75. Southeast wind around 10 mph.
Sunday
Mostly sunny, with a high near 78. Southeast wind 10 to 15 mph.
Sunday Night
Partly cloudy, with a low around 77. Southeast wind around 15 mph.
Monday
Partly sunny, with a high near 79. Southeast wind around 15 mph.
Monday Night
Mostly cloudy, with a low around 77. Southeast wind 10 to 15 mph.
Tuesday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 79. Southeast wind 10 to 15 mph.
Tuesday Night
Partly cloudy, with a low around 77. Southeast wind 5 to 10 mph.
Wednesday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 79. Southeast wind 5 to 10 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles WSW Grand Isle LA
 29.21°N 90.07°W
Last Update:
6:16 pm CDT May 13, 2026
Forecast Valid:
6pm CDT May 13, 2026-6pm CDT May 20, 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