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.

Partly Cloudy

78°F

26°C

Humidity 87%
Wind Speed SE 3 mph
Barometer 29.98 in
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 21 May 12:15 pm CDT
Extended Forecast for

Galliano LA

  • This Afternoon

    This Afternoon: A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86. Southeast wind around 10 mph.

    High: 86 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 78. South wind around 5 mph.

    Low: 78 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms, mainly after 11am. Partly sunny, with a high near 87. South wind 5 to 10 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 87 °F

    Chance
    T-storms

  • Friday Night

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

    Low: 79 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87. Light south wind increasing to 5 to 10 mph in the morning.

    High: 87 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 79. Southeast wind around 5 mph.

    Low: 79 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Sunday

    Sunday: Showers and possibly a thunderstorm. High near 86. South wind 5 to 10 mph. Chance of precipitation is 80%.

    High: 86 °F

    Showers
    Likely then
    T-storms

  • Sunday Night

    Sunday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 78. Southeast wind around 5 mph. Chance of precipitation is 70%.

    Low: 78 °F

    Showers
    Likely

  • Memorial Day

    Memorial Day: Showers and possibly a thunderstorm before 1pm, then showers and thunderstorms likely after 1pm. Mostly cloudy, with a high near 85. Southeast wind 5 to 10 mph.

    High: 85 °F

    Showers then
    T-storms

Detailed Forecast

This Afternoon
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86. Southeast wind around 10 mph.
Tonight
A 40 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 78. South wind around 5 mph.
Friday
A 50 percent chance of showers and thunderstorms, mainly after 11am. Partly sunny, with a high near 87. South wind 5 to 10 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 79. South wind around 5 mph.
Saturday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87. Light south wind increasing to 5 to 10 mph in the morning.
Saturday Night
A 20 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 79. Southeast wind around 5 mph.
Sunday
Showers and possibly a thunderstorm. High near 86. South wind 5 to 10 mph. Chance of precipitation is 80%.
Sunday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 78. Southeast wind around 5 mph. Chance of precipitation is 70%.
Memorial Day
Showers and possibly a thunderstorm before 1pm, then showers and thunderstorms likely after 1pm. Mostly cloudy, with a high near 85. Southeast wind 5 to 10 mph.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 78. Southeast wind around 5 mph.
Tuesday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 86. Southeast wind 5 to 10 mph.
Tuesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 79. Southeast wind around 5 mph.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 87. Southeast wind 5 to 10 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Galliano LA
 29.45°N 90.29°W
Last Update:
4:30 am CDT May 21, 2026
Forecast Valid:
1pm CDT May 21, 2026-6pm CDT May 27, 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