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

50°F

10°C

Humidity 45%
Wind Speed NE 12 G 20 mph
Barometer 30.41 in
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill45°F (7°C)
Last update 28 Nov 4:55 am CST
Extended Forecast for

13 Miles WSW Grand Isle LA

  • Today

    Today: Sunny, with a high near 63. Northeast wind 10 to 15 mph.

    High: 63 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a temperature falling to near 49 by 8pm, then rising to around 54 during the remainder of the night. East wind around 10 mph.

    Low: 49 °F⇑

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 73. Southeast wind 10 to 15 mph.

    High: 73 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of showers after 3am. Mostly cloudy, with a low around 65. Southeast wind around 5 mph.

    Low: 65 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: A 40 percent chance of showers. Mostly cloudy, with a high near 74. South wind 5 to 10 mph becoming northeast in the morning.

    High: 74 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A 30 percent chance of showers, mainly before 9pm. Cloudy, with a low around 60. Northeast wind around 10 mph.

    Low: 60 °F

    Chance
    Showers

  • Monday

    Monday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after noon. Cloudy, with a high near 70. Northeast wind 10 to 15 mph. Chance of precipitation is 60%.

    High: 70 °F

    Chance
    T-storms then
    Showers
    Likely

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm before midnight, then showers likely. Low around 52. Northeast wind around 10 mph becoming north after midnight. Chance of precipitation is 80%.

    Low: 52 °F

    Showers

  • Tuesday

    Tuesday: A slight chance of showers before noon. Partly sunny, with a high near 61. North wind 10 to 15 mph.

    High: 61 °F

    Slight Chance
    Showers then
    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 63. Northeast wind 10 to 15 mph.
Tonight
Partly cloudy, with a temperature falling to near 49 by 8pm, then rising to around 54 during the remainder of the night. East wind around 10 mph.
Saturday
Partly sunny, with a high near 73. Southeast wind 10 to 15 mph.
Saturday Night
A 20 percent chance of showers after 3am. Mostly cloudy, with a low around 65. Southeast wind around 5 mph.
Sunday
A 40 percent chance of showers. Mostly cloudy, with a high near 74. South wind 5 to 10 mph becoming northeast in the morning.
Sunday Night
A 30 percent chance of showers, mainly before 9pm. Cloudy, with a low around 60. Northeast wind around 10 mph.
Monday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after noon. Cloudy, with a high near 70. Northeast wind 10 to 15 mph. Chance of precipitation is 60%.
Monday Night
Showers and possibly a thunderstorm before midnight, then showers likely. Low around 52. Northeast wind around 10 mph becoming north after midnight. Chance of precipitation is 80%.
Tuesday
A slight chance of showers before noon. Partly sunny, with a high near 61. North wind 10 to 15 mph.
Tuesday Night
Partly cloudy, with a low around 45. Northeast wind around 5 mph.
Wednesday
Mostly sunny, with a high near 66. Northeast wind 5 to 10 mph becoming east in the afternoon.
Wednesday Night
A slight chance of showers. Mostly cloudy, with a low around 54. East wind around 5 mph.
Thursday
A chance of showers. Mostly cloudy, with a high near 70. East wind 5 to 10 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
13 Miles WSW Grand Isle LA
 29.15°N 90.17°W
Last Update:
11:30 pm CST Nov 27, 2025
Forecast Valid:
5am CST Nov 28, 2025-6pm CST Dec 4, 2025
 
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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