Heavy to Excessive Rainfall and Flooding Threats in the Central and Eastern U.S.; Heat and Fire Weather Concerns in the West

Thunderstorms producing excessive rainfall and potential flooding concerns will continue through tonight from the Southern Plains to the East Coast. Areas of greatest concern for flooding are over central Texas and the Mid-Atlantic. Heat will continue to build across the West through Tuesday. Heat Advisories and Extreme Heat Warnings are in effect. Fire Weather concerns continue through Monday. Read More >

Current conditions at

Galliano, South Lafourche Airport (KGAO)

Lat: 29.44°NLon: 90.26°WElev: 0ft.

Fair

77°F

25°C

Humidity	91%
Wind Speed	Calm
Barometer	30.10 in
Dewpoint	74°F (23°C)
Visibility	10.00 mi
Heat Index	78°F (26°C)
Last update	14 Jul 12:35 am CDT

More Information:

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

Extended Forecast for

2 Miles NE Grand Isle LA

Overnight
Low: 85 °F
Slight Chance
T-storms
Monday
High: 88 °F
Chance
T-storms
Monday Night
Low: 82 °F
Slight Chance
T-storms
Tuesday
High: 90 °F
Chance
T-storms
Tuesday Night
Low: 81 °F
Mostly Clear
then Chance
T-storms
Wednesday
High: 91 °F
T-storms
Likely
Wednesday Night
Low: 80 °F
Chance
T-storms then
T-storms
Thursday
High: 87 °F
T-storms
Thursday Night
Low: 80 °F
Showers

Detailed Forecast

Overnight

A 10 percent chance of showers and thunderstorms after 5am. Mostly clear, with a steady temperature around 85. South wind around 5 mph.

Monday

A 50 percent chance of showers and thunderstorms, mainly after 8am. Mostly sunny, with a high near 88. Southwest wind around 5 mph becoming north in the morning. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Monday Night

A slight chance of showers and thunderstorms before 7pm, then a slight chance of showers and thunderstorms after 4am. Mostly clear, with a low around 82. West wind around 5 mph. Chance of precipitation is 20%.

Tuesday

A 50 percent chance of showers and thunderstorms after 7am. Sunny, with a high near 90. Northwest wind 5 to 10 mph becoming southwest in the afternoon.

Tuesday Night

A 30 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 81. Southwest wind 5 to 10 mph becoming northwest after midnight.

Wednesday

Showers likely and possibly a thunderstorm before 10am, then showers and thunderstorms likely after 10am. Partly sunny, with a high near 91. Northwest wind 5 to 10 mph becoming southeast in the afternoon. Chance of precipitation is 60%.

Wednesday Night

A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 80. West wind around 10 mph becoming north after midnight. Chance of precipitation is 80%.

Thursday

Showers and possibly a thunderstorm before 1pm, then showers and thunderstorms after 1pm. High near 87. North wind 10 to 15 mph becoming south in the afternoon. Chance of precipitation is 90%.

Thursday Night

Showers and possibly a thunderstorm. Mostly cloudy, with a low around 80. Southwest wind around 15 mph.

Friday

Showers and possibly a thunderstorm. Mostly cloudy, with a high near 87. Southwest wind around 15 mph.

Friday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 82. South wind 10 to 15 mph.

Saturday

Showers and thunderstorms. Partly sunny, with a high near 88. South wind 5 to 10 mph.

Saturday Night

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

Sunday

Showers and thunderstorms likely. Mostly sunny, with a high near 89. Southwest wind around 5 mph.