National Weather Service

News Headlines

🌎New NOAA animated series takes kids on educational, climate-weather adventures

Current conditions at

Galliano, South Lafourche Airport (KGAO)

Lat: 29.44°NLon: 90.26°WElev: 0ft.

Fair

79°F

26°C

Humidity	87%
Wind Speed	Calm
Barometer	29.99 in
Dewpoint	74°F (23°C)
Visibility	10.00 mi
Heat Index	83°F (28°C)
Last update	17 Jun 12:55 am CDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Grand Isle LA

Overnight
Low: 82 °F
Chance
T-storms
Tuesday
High: 87 °F
T-storms
Likely
Tuesday Night
Low: 85 °F
Chance
T-storms
Wednesday
High: 87 °F
T-storms
Likely
Wednesday Night
Low: 83 °F
Chance
T-storms
Juneteenth
High: 87 °F
Showers
Likely
Thursday Night
Low: 81 °F
Chance
T-storms
Friday
High: 87 °F
Chance
T-storms
Friday Night
Low: 83 °F
Chance
T-storms

Detailed Forecast

Overnight

A 30 percent chance of showers and thunderstorms, mainly between 4am and 5am. Partly cloudy, with a low around 82. South wind around 10 mph.

Tuesday

Showers and thunderstorms likely before 1pm, then showers likely and possibly a thunderstorm between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 87. South wind around 10 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tuesday Night

A 40 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a steady temperature around 85. South wind around 10 mph.

Wednesday

Showers likely and possibly a thunderstorm before 10am, then showers and thunderstorms likely between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 87. South wind around 10 mph. Chance of precipitation is 70%.

Wednesday Night

A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 83. South wind around 10 mph.

Juneteenth

Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 87. South wind 5 to 10 mph. Chance of precipitation is 60%.

Thursday Night

A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 81. South wind around 5 mph.

Friday

A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87. West wind 5 to 10 mph becoming east in the morning.

Friday Night

A chance of showers and thunderstorms. Partly cloudy, with a low around 83. South wind 5 to 10 mph.

Saturday

A chance of showers and thunderstorms. Sunny, with a high near 87. Southeast wind 5 to 10 mph.

Saturday Night

A chance of showers and thunderstorms. Mostly clear, with a low around 82. Southeast wind around 10 mph.

Sunday

Showers likely and possibly a thunderstorm. Sunny, with a high near 87. Southeast wind around 10 mph.