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

76°F

24°C

Humidity 90%
Wind Speed Calm
Barometer 29.92 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index76°F (24°C)
Last update 6 Sep 6:15 am CDT
Extended Forecast for

Galliano LA

  • Today

    Today: A 50 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 90. Calm wind becoming southwest around 5 mph in the afternoon. New rainfall amounts between a quarter and half of an inch possible.

    High: 90 °F

    Sunny then
    Chance
    T-storms

  • Tonight

    Tonight: Mostly clear, with a low around 75. Southwest wind around 5 mph becoming calm.

    Low: 75 °F

    Mostly Clear

  • Labor Day

    Labor Day: A 40 percent chance of showers and thunderstorms, mainly after 3pm. Mostly sunny, with a high near 92. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 92 °F

    Chance
    T-storms

  • Monday Night

    Monday Night: A 30 percent chance of showers and thunderstorms before 7pm. Mostly clear during the early evening, then becoming mostly cloudy, with a low around 75. Southwest wind around 5 mph becoming calm.

    Low: 75 °F

    Chance
    T-storms then
    Partly Cloudy

  • Tuesday

    Tuesday: Showers and thunderstorms likely, mainly between 1pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Mostly sunny, with a high near 91. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 70%.

    High: 91 °F

    Chance
    T-storms then
    T-storms
    Likely

  • Tuesday Night

    Tuesday Night: A chance of thunderstorms before 7pm, then a slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 76. Southeast wind around 5 mph becoming calm. Chance of precipitation is 30%.

    Low: 76 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. High near 89. Calm wind becoming east around 5 mph in the morning. Chance of precipitation is 80%.

    High: 89 °F

    Showers
    Likely then
    T-storms

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 75. Calm wind.

    Low: 75 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: Showers and thunderstorms likely, mainly after 1pm. Mostly sunny, with a high near 89. Calm wind becoming south around 5 mph in the afternoon.

    High: 89 °F

    T-storms
    Likely

Detailed Forecast

Today
A 50 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 90. Calm wind becoming southwest around 5 mph in the afternoon. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Mostly clear, with a low around 75. Southwest wind around 5 mph becoming calm.
Labor Day
A 40 percent chance of showers and thunderstorms, mainly after 3pm. Mostly sunny, with a high near 92. Calm wind becoming northwest around 5 mph in the afternoon.
Monday Night
A 30 percent chance of showers and thunderstorms before 7pm. Mostly clear during the early evening, then becoming mostly cloudy, with a low around 75. Southwest wind around 5 mph becoming calm.
Tuesday
Showers and thunderstorms likely, mainly between 1pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Mostly sunny, with a high near 91. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 70%.
Tuesday Night
A chance of thunderstorms before 7pm, then a slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 76. Southeast wind around 5 mph becoming calm. Chance of precipitation is 30%.
Wednesday
Showers and possibly a thunderstorm. High near 89. Calm wind becoming east around 5 mph in the morning. Chance of precipitation is 80%.
Wednesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 75. Calm wind.
Thursday
Showers and thunderstorms likely, mainly after 1pm. Mostly sunny, with a high near 89. Calm wind becoming south around 5 mph in the afternoon.
Thursday Night
A chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 75. Calm wind.
Friday
Showers and thunderstorms likely. Mostly sunny, with a high near 90. Calm wind becoming southwest around 5 mph in the afternoon.
Friday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 75. Calm wind.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 90. Calm wind becoming south around 5 mph in the afternoon.
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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:
6:11 am CDT Sep 6, 2026
Forecast Valid:
6am CDT Sep 6, 2026-6pm CDT Sep 12, 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