Tracking Storm System Across the Eastern U.S.

A storm system will continue to produce widespread showers and thunderstorms as it progresses eastward across the central U.S. into the Northeast through the weekend. There are risks of severe thunderstorms and excessive rainfall on Saturday from the Ozarks into the mid-Mississippi River Valley with potential for damaging winds, large hail, tornadoes, and flash flooding. Read More >

Current conditions at

Galliano, South Lafourche Airport (KGAO)

Lat: 29.44°NLon: 90.26°WElev: 0ft.

Mostly Cloudy

75°F

24°C

Humidity	89%
Wind Speed	S 5 mph
Barometer	29.92 in
Dewpoint	72°F (22°C)
Visibility	10.00 mi
Last update	18 Oct 11:55 pm CDT

More Information:

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

Extended Forecast for

Grand Isle LA

Overnight
Low: 79 °F
Showers
Sunday
High: 83 °F
Chance
Showers then
Sunny
Sunday Night
Low: 69 °F
Mostly Clear
and Breezy
then Clear
Monday
High: 77 °F
Sunny
Monday Night
Low: 72 °F
Mostly Clear
Tuesday
High: 80 °F
Sunny
Tuesday Night
Low: 70 °F
Mostly Clear
Wednesday
High: 77 °F
Sunny
Wednesday Night
Low: 70 °F
Mostly Clear

Detailed Forecast

Overnight

Showers and thunderstorms likely before 3am, then showers and possibly a thunderstorm between 3am and 5am, then a chance of showers and thunderstorms after 5am. Steady temperature around 79. Southwest wind around 15 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Sunday

A 30 percent chance of showers and thunderstorms, mainly before 7am. Partly sunny, then gradually becoming sunny, with a high near 83. North wind 10 to 15 mph.

Sunday Night

Clear, with a low around 69. Breezy, with a north wind 15 to 20 mph.

Monday

Sunny, with a high near 77. East wind 5 to 15 mph.

Monday Night

Mostly clear, with a low around 72. East wind around 5 mph becoming south after midnight.

Tuesday

Sunny, with a high near 80. Calm wind becoming northwest around 5 mph.

Tuesday Night

Mostly clear, with a low around 70. Southwest wind 5 to 10 mph becoming north after midnight.

Wednesday

Sunny, with a high near 77. Northeast wind 10 to 15 mph.