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

58°F

14°C

Humidity 44%
Wind Speed N 16 G 22 mph
Barometer 30.13 in
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 17 Jan 12:55 pm CST
Extended Forecast for

2 Miles NE Grand Isle LA

  • This Afternoon

    This Afternoon: A 40 percent chance of showers, mainly after 5pm. Mostly cloudy, with a high near 59. Breezy, with a north wind around 20 mph.

    High: 59 °F

    Chance
    Showers and
    Breezy

  • Tonight

    Tonight: Showers likely, mainly before 1am. Cloudy, then gradually becoming partly cloudy, with a low around 42. Breezy, with a north wind 20 to 25 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 42 °F

    Showers
    Likely and
    Breezy

  • Sunday

    Sunday: Sunny, with a high near 49. Breezy, with a northwest wind 10 to 20 mph.

    High: 49 °F

    Sunny and
    Breezy then
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 45. Northwest wind 5 to 10 mph.

    Low: 45 °F

    Mostly Clear

  • M.L.King Day

    M.L.King Day: Sunny, with a high near 57. Northeast wind 5 to 10 mph.

    High: 57 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 47. Northeast wind 5 to 15 mph.

    Low: 47 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 55. Northeast wind around 15 mph.

    High: 55 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 50. East wind 10 to 15 mph.

    Low: 50 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 63. Southeast wind around 10 mph.

    High: 63 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
A 40 percent chance of showers, mainly after 5pm. Mostly cloudy, with a high near 59. Breezy, with a north wind around 20 mph.
Tonight
Showers likely, mainly before 1am. Cloudy, then gradually becoming partly cloudy, with a low around 42. Breezy, with a north wind 20 to 25 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
Sunny, with a high near 49. Breezy, with a northwest wind 10 to 20 mph.
Sunday Night
Mostly clear, with a low around 45. Northwest wind 5 to 10 mph.
M.L.King Day
Sunny, with a high near 57. Northeast wind 5 to 10 mph.
Monday Night
Mostly clear, with a low around 47. Northeast wind 5 to 15 mph.
Tuesday
Mostly sunny, with a high near 55. Northeast wind around 15 mph.
Tuesday Night
Mostly cloudy, with a low around 50. East wind 10 to 15 mph.
Wednesday
Mostly cloudy, with a high near 63. Southeast wind around 10 mph.
Wednesday Night
A chance of showers. Cloudy, with a low around 57. Southeast wind 10 to 15 mph.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 63. Southeast wind around 15 mph becoming northeast in the afternoon.
Thursday Night
Partly cloudy, with a low around 56. Northeast wind 10 to 15 mph.
Friday
Mostly sunny, with a high near 65. Northeast wind around 10 mph.
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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:
11:32 am CST Jan 17, 2026
Forecast Valid:
1pm CST Jan 17, 2026-6pm CST Jan 23, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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