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

85°F

29°C

Humidity 69%
Wind Speed S 7 mph
Barometer 30.06 in
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index92°F (33°C)
Last update 18 Jun 8:35 am CDT
Extended Forecast for

9 Miles SSW Port Sulphur LA

  • Today

    Today: A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 88. South wind around 10 mph.

    High: 88 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 80. South wind around 10 mph.

    Low: 80 °F

    Chance
    T-storms

  • Juneteenth

    Juneteenth: Showers likely and possibly a thunderstorm. Mostly sunny, with a high near 89. Southwest wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 89 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 80. Southwest wind around 5 mph.

    Low: 80 °F

    Slight Chance
    T-storms

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms. Sunny, with a high near 89. West wind around 5 mph becoming south in the afternoon.

    High: 89 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 79. Southwest wind around 5 mph.

    Low: 79 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms. Sunny, with a high near 89. North wind 5 to 10 mph becoming southeast in the afternoon.

    High: 89 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 80. Southeast wind 5 to 10 mph.

    Low: 80 °F

    Mostly Clear
    then Chance
    T-storms

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm. Sunny, with a high near 88. East wind 5 to 10 mph.

    High: 88 °F

    Showers
    Likely

Detailed Forecast

Today
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 88. South wind around 10 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 80. South wind around 10 mph.
Juneteenth
Showers likely and possibly a thunderstorm. Mostly sunny, with a high near 89. Southwest wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 80. Southwest wind around 5 mph.
Friday
A 40 percent chance of showers and thunderstorms. Sunny, with a high near 89. West wind around 5 mph becoming south in the afternoon.
Friday Night
A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 79. Southwest wind around 5 mph.
Saturday
A 40 percent chance of showers and thunderstorms. Sunny, with a high near 89. North wind 5 to 10 mph becoming southeast in the afternoon.
Saturday Night
A 30 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 80. Southeast wind 5 to 10 mph.
Sunday
Showers likely and possibly a thunderstorm. Sunny, with a high near 88. East wind 5 to 10 mph.
Sunday Night
A chance of showers and thunderstorms. Mostly clear, with a low around 79. Southeast wind 5 to 10 mph.
Monday
Showers likely and possibly a thunderstorm. Mostly sunny, with a high near 89. East wind 5 to 15 mph.
Monday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 79. Southeast wind around 10 mph.
Tuesday
Showers likely and possibly a thunderstorm. Mostly sunny, with a high near 89. East wind around 10 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
9 Miles SSW Port Sulphur LA
 29.39°N 89.77°W
Last Update:
6:21 am CDT Jun 18, 2025
Forecast Valid:
8am CDT Jun 18, 2025-6pm CDT Jun 24, 2025
 
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