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.

Fog/Mist

81°F

27°C

Humidity 89%
Wind Speed E 3 mph
Barometer 29.95 in
Dewpoint 77°F (25°C)
Visibility 2.50 mi
Heat Index88°F (31°C)
Last update 4 Oct 7:16 pm CDT
Extended Forecast for

Galliano LA

  • Tonight

    Tonight: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Calm wind becoming northeast around 5 mph after midnight. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 70 °F

    Chance
    T-storms

  • Monday

    Monday: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 83. Northeast wind around 10 mph.

    High: 83 °F

    Chance
    Showers then
    Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 2am, then a chance of showers between 2am and 3am. Mostly cloudy, with a low around 70. Northeast wind around 5 mph. Chance of precipitation is 30%.

    Low: 70 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms, mainly after 1pm. Mostly cloudy, with a high near 85. Northeast wind 10 to 15 mph.

    High: 85 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of thunderstorms before 7pm. Mostly cloudy, with a low around 70. Northeast wind 5 to 10 mph. Chance of precipitation is 30%.

    Low: 70 °F

    Chance
    T-storms then
    Mostly Cloudy

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 85. Northeast wind around 15 mph.

    High: 85 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers. Mostly cloudy, with a low around 70. Northeast wind around 10 mph, with gusts as high as 20 mph.

    Low: 70 °F

    Slight Chance
    Showers

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 85. East wind around 15 mph, with gusts as high as 30 mph.

    High: 85 °F

    Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 69. East wind 10 to 15 mph.

    Low: 69 °F

    Chance
    Showers

Detailed Forecast

Tonight
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Calm wind becoming northeast around 5 mph after midnight. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 83. Northeast wind around 10 mph.
Monday Night
A chance of showers and thunderstorms before 2am, then a chance of showers between 2am and 3am. Mostly cloudy, with a low around 70. Northeast wind around 5 mph. Chance of precipitation is 30%.
Tuesday
A 50 percent chance of showers and thunderstorms, mainly after 1pm. Mostly cloudy, with a high near 85. Northeast wind 10 to 15 mph.
Tuesday Night
A chance of thunderstorms before 7pm. Mostly cloudy, with a low around 70. Northeast wind 5 to 10 mph. Chance of precipitation is 30%.
Wednesday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 85. Northeast wind around 15 mph.
Wednesday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 70. Northeast wind around 10 mph, with gusts as high as 20 mph.
Thursday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 85. East wind around 15 mph, with gusts as high as 30 mph.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 69. East wind 10 to 15 mph.
Friday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 83. Breezy, with an east wind 15 to 20 mph, with gusts as high as 30 mph.
Friday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 69. Breezy, with an east wind 15 to 20 mph, with gusts as high as 30 mph.
Saturday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 83. Breezy, with a northeast wind 20 to 25 mph.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 69. Breezy, with a northeast wind 15 to 20 mph.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 85. West wind 10 to 15 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Galliano LA
 29.45°N 90.32°W
Last Update:
5:27 pm CDT Oct 4, 2026
Forecast Valid:
7pm CDT Oct 4, 2026-6pm CDT Oct 11, 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