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

85°F

29°C

Humidity 73%
Wind Speed NE 3 mph
Barometer 30.00 in
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index94°F (34°C)
Last update 3 Sep 9:15 am CDT
Extended Forecast for

6 Miles ESE Montegut LA

  • Today

    Today: A 50 percent chance of showers and thunderstorms, mainly after 1pm. Sunny, with a high near 89. Calm wind becoming east around 5 mph in the afternoon. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 89 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms, mainly between 4am and 5am. Mostly clear, with a low around 75. Calm wind.

    Low: 75 °F

    Slight Chance
    T-storms

  • Friday

    Friday: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 3pm. High near 88. Calm wind becoming north around 5 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 88 °F

    Slight Chance
    T-storms then
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 4am, then a chance of showers and thunderstorms after 4am. Mostly cloudy, then gradually becoming mostly clear, with a low around 75. Calm wind. Chance of precipitation is 30%.

    Low: 75 °F

    Chance
    T-storms then
    Chance
    Showers

  • Saturday

    Saturday: Showers and possibly a thunderstorm. High near 88. Calm wind becoming west around 5 mph. Chance of precipitation is 80%.

    High: 88 °F

    Showers
    Likely then
    T-storms

  • Saturday Night

    Saturday Night: A chance of thunderstorms before 7pm, then a slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 75. Calm wind. Chance of precipitation is 30%.

    Low: 75 °F

    Chance
    T-storms

  • Sunday

    Sunday: Showers and thunderstorms likely, mainly after 1pm. Mostly sunny, with a high near 89. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 60%.

    High: 89 °F

    T-storms
    Likely

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 76. Calm wind.

    Low: 76 °F

    Partly Cloudy

  • Labor Day

    Labor Day: 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 1pm. Sunny, with a high near 89. Calm wind becoming east around 5 mph in the afternoon. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
A 20 percent chance of showers and thunderstorms, mainly between 4am and 5am. Mostly clear, with a low around 75. Calm wind.
Friday
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 3pm. High near 88. Calm wind becoming north around 5 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 4am, then a chance of showers and thunderstorms after 4am. Mostly cloudy, then gradually becoming mostly clear, with a low around 75. Calm wind. Chance of precipitation is 30%.
Saturday
Showers and possibly a thunderstorm. High near 88. Calm wind becoming west around 5 mph. Chance of precipitation is 80%.
Saturday Night
A chance of thunderstorms before 7pm, then a slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 75. Calm wind. Chance of precipitation is 30%.
Sunday
Showers and thunderstorms likely, mainly after 1pm. Mostly sunny, with a high near 89. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 60%.
Sunday Night
Partly cloudy, with a low around 76. Calm wind.
Labor Day
Showers and thunderstorms likely, mainly after 1pm. Mostly sunny, with a high near 89. Calm wind becoming south around 5 mph in the afternoon.
Monday Night
A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 75. Calm wind.
Tuesday
Showers and thunderstorms likely. Mostly sunny, with a high near 89. Calm wind becoming southeast around 5 mph in the afternoon.
Tuesday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 76. Southeast wind around 5 mph becoming calm.
Wednesday
Showers and thunderstorms likely. Mostly sunny, with a high near 89. Calm wind becoming southeast around 5 mph in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles ESE Montegut LA
 29.45°N 90.48°W
Last Update:
2:02 am CDT Sep 3, 2026
Forecast Valid:
9am CDT Sep 3, 2026-6pm CDT Sep 9, 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