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

47°F

8°C

Humidity 81%
Wind Speed Calm
Barometer 30.16 in
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 13 Mar 2:15 am CDT
Extended Forecast for

9 Miles SSW Port Sulphur LA

  • Overnight

    Overnight: Mostly clear, with a low around 55. Northeast wind around 5 mph.

    Low: 55 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 69. Northeast wind around 5 mph becoming south in the afternoon.

    High: 69 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 59. Calm wind becoming east around 5 mph.

    Low: 59 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 73. East wind 5 to 10 mph.

    High: 73 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 65. Southeast wind 5 to 10 mph.

    Low: 65 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 77. South wind 10 to 15 mph.

    High: 77 °F

    Sunny

  • Sunday Night

    Sunday Night: A slight chance of showers before 1am, then a chance of showers and thunderstorms between 1am and 4am, then showers and possibly a thunderstorm after 4am. Low around 51. South wind 10 to 15 mph becoming west after midnight. Chance of precipitation is 80%.

    Low: 51 °F

    Slight Chance
    Showers then
    Showers

  • Monday

    Monday: Showers and possibly a thunderstorm before 7am, then a chance of showers and thunderstorms between 7am and 1pm. High near 62. Breezy, with a north wind around 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%.

    High: 62 °F

    Breezy.
    Showers then
    Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 43. Breezy, with a north wind 15 to 20 mph.

    Low: 43 °F

    Partly Cloudy
    and Breezy
    then Partly
    Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 55. Northeast wind around 5 mph.
Friday
Sunny, with a high near 69. Northeast wind around 5 mph becoming south in the afternoon.
Friday Night
Mostly clear, with a low around 59. Calm wind becoming east around 5 mph.
Saturday
Sunny, with a high near 73. East wind 5 to 10 mph.
Saturday Night
Partly cloudy, with a low around 65. Southeast wind 5 to 10 mph.
Sunday
Sunny, with a high near 77. South wind 10 to 15 mph.
Sunday Night
A slight chance of showers before 1am, then a chance of showers and thunderstorms between 1am and 4am, then showers and possibly a thunderstorm after 4am. Low around 51. South wind 10 to 15 mph becoming west after midnight. Chance of precipitation is 80%.
Monday
Showers and possibly a thunderstorm before 7am, then a chance of showers and thunderstorms between 7am and 1pm. High near 62. Breezy, with a north wind around 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%.
Monday Night
Partly cloudy, with a low around 43. Breezy, with a north wind 15 to 20 mph.
Tuesday
Partly sunny, with a high near 58. North wind 10 to 15 mph.
Tuesday Night
Mostly clear, with a low around 49. Northeast wind 5 to 10 mph.
Wednesday
Mostly sunny, with a high near 64. East wind 5 to 10 mph.
Wednesday Night
Mostly clear, with a low around 55. Southeast wind around 5 mph.
Thursday
Sunny, 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:
9 Miles SSW Port Sulphur LA
 29.39°N 89.77°W
Last Update:
12:31 am CDT Mar 13, 2026
Forecast Valid:
2am CDT Mar 13, 2026-6pm CDT Mar 19, 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