Current conditions at

Galliano, South Lafourche Airport (KGAO)

Lat: 29.44°NLon: 90.26°WElev: 0ft.

69°F

21°C

Humidity 92%
Wind Speed Calm
Barometer 30.07 in
Dewpoint 67°F (19°C)
Visibility NA
Last update 1 Apr 4:35 am CDT
Extended Forecast for

15 Miles WSW Grand Isle LA

  • Overnight

    Overnight: A 10 percent chance of showers and thunderstorms after 5am.  Partly cloudy, with a low around 67. Southeast wind around 5 mph.

    Low: 67 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm.  Mostly sunny, with a high near 79. Southeast 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: 79 °F

    Chance
    T-storms then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers and thunderstorms, mainly before 7pm.  Partly cloudy, with a low around 68. Southeast wind around 10 mph, with gusts as high as 20 mph.

    Low: 68 °F

    Chance
    Showers then
    Partly Cloudy

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after 10am.  Mostly sunny, with a high near 80. Southeast wind 10 to 15 mph.  Chance of precipitation is 50%.

    High: 80 °F

    Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am.  Mostly cloudy, with a low around 68. Southeast wind around 10 mph.  Chance of precipitation is 20%.

    Low: 68 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms.  Partly sunny, with a high near 80. Southeast wind 10 to 15 mph.

    High: 80 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: A slight chance of thunderstorms before 7pm.  Partly cloudy, with a low around 68. Southeast wind around 10 mph.  Chance of precipitation is 10%.

    Low: 68 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms, mainly after 1pm.  Mostly sunny, with a high near 80. Southeast wind around 10 mph.

    High: 80 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 65. Southeast wind around 5 mph.

    Low: 65 °F

    Chance
    Showers

Detailed Forecast

Overnight
A 10 percent chance of showers and thunderstorms after 5am. Partly cloudy, with a low around 67. Southeast wind around 5 mph.
Wednesday
A chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 79. Southeast 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.
Wednesday Night
A 30 percent chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 68. Southeast wind around 10 mph, with gusts as high as 20 mph.
Thursday
A chance of showers, with thunderstorms also possible after 10am. Mostly sunny, with a high near 80. Southeast wind 10 to 15 mph. Chance of precipitation is 50%.
Thursday Night
A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Mostly cloudy, with a low around 68. Southeast wind around 10 mph. Chance of precipitation is 20%.
Friday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 80. Southeast wind 10 to 15 mph.
Friday Night
A slight chance of thunderstorms before 7pm. Partly cloudy, with a low around 68. Southeast wind around 10 mph. Chance of precipitation is 10%.
Saturday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 80. Southeast wind around 10 mph.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. Southeast wind around 5 mph.
Sunday
Showers likely and possibly a thunderstorm. Cloudy, with a high near 77. North wind 5 to 10 mph.
Sunday Night
A chance of showers and thunderstorms. Cloudy, with a low around 57. Northeast wind 10 to 15 mph.
Monday
A slight chance of showers. Cloudy, with a high near 71. Northeast wind 10 to 15 mph.
Monday Night
A slight chance of showers. Mostly cloudy, with a low around 58. Northeast wind around 10 mph.
Tuesday
Mostly sunny, with a high near 75. Northeast wind 10 to 15 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
15 Miles WSW Grand Isle LA
 29.13°N 90.2°W
2:02 am CDT Apr 1, 2026
4am CDT Apr 1, 2026-6pm CDT Apr 7, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database