Current conditions at

Galliano, South Lafourche Airport (KGAO)

Lat: 29.44°NLon: 90.26°WElev: 0ft.

Fair

49°F

9°C

Humidity 42%
Wind Speed N 7 mph
Barometer 30.36 in
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 12 Jan 5:15 pm CST
Extended Forecast for

Grand Isle LA

  • Tonight

    Tonight: Partly cloudy, with a low around 51. Northeast wind 5 to 10 mph.

    Low: 51 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 59. Northeast wind around 5 mph becoming calm  in the afternoon.

    High: 59 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers, mainly after midnight.  Mostly cloudy, with a steady temperature around 58. Light and variable wind becoming west 5 to 10 mph after midnight.

    Low: 58 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Mostly sunny, with a high near 64. Breezy, with a west wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon.

    High: 64 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 45. Windy, with a north wind 20 to 30 mph.

    Low: 45 °F

    Partly Cloudy
    and Windy

  • Thursday

    Thursday: Sunny, with a high near 50. Windy, with a north wind 25 to 30 mph decreasing to 15 to 20 mph in the afternoon.

    High: 50 °F

    Sunny and
    Windy

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 46. North wind 10 to 15 mph decreasing to 5 to 10 mph after midnight.

    Low: 46 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 61. Northeast wind 5 to 10 mph becoming southwest in the afternoon.

    High: 61 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 52. Southwest wind 10 to 15 mph becoming northwest after midnight.

    Low: 52 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 51. Northeast wind 5 to 10 mph.
Tuesday
Sunny, with a high near 59. Northeast wind around 5 mph becoming calm in the afternoon.
Tuesday Night
A 30 percent chance of showers, mainly after midnight. Mostly cloudy, with a steady temperature around 58. Light and variable wind becoming west 5 to 10 mph after midnight.
Wednesday
Mostly sunny, with a high near 64. Breezy, with a west wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 45. Windy, with a north wind 20 to 30 mph.
Thursday
Sunny, with a high near 50. Windy, with a north wind 25 to 30 mph decreasing to 15 to 20 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 46. North wind 10 to 15 mph decreasing to 5 to 10 mph after midnight.
Friday
Sunny, with a high near 61. Northeast wind 5 to 10 mph becoming southwest in the afternoon.
Friday Night
Partly cloudy, with a low around 52. Southwest wind 10 to 15 mph becoming northwest after midnight.
Saturday
Sunny, with a high near 60. North wind around 15 mph.
Saturday Night
Partly cloudy, with a low around 49. Northwest wind around 15 mph.
Sunday
Sunny, with a high near 57. North wind 10 to 15 mph.
Sunday Night
Mostly clear, with a low around 44. North wind around 10 mph becoming south in the evening.
M.L.King Day
Sunny, with a high near 57. Northeast wind 5 to 10 mph becoming southeast in the afternoon.
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ABOUT THIS FORECAST

 
Point Forecast:
Grand Isle LA
 29.23°N 89.99°W
3:58 pm CST Jan 12, 2026
5pm CST Jan 12, 2026-6pm CST Jan 19, 2026
 
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Additional Resources

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Hourly Weather Forecast

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