National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Thunderstorms and Heavy Rainfall in the Mid-Atlantic and Southern New England; Fire Weather Concerns in the West

Heavy rain and isolated severe thunderstorms may continue to bring flash and urban flooding to the northern Mid-Atlantic and southern New England through tonight. Isolated dry thunderstorms will continue to bring a fire weather threat to the northwestern Great Basin through Friday. Read More >

Current conditions at

Galliano, South Lafourche Airport (KGAO)

Lat: 29.44°NLon: 90.26°WElev: 0ft.

Partly Cloudy

88°F

31°C

Humidity 63%
Wind Speed W 9 mph
Barometer 30.13 in
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index97°F (36°C)
Last update 1 Aug 10:15 am CDT
Extended Forecast for

South Lafourche Airport LA

  • Today

    Today: Showers and thunderstorms likely, mainly between 1pm and 3pm. Mostly sunny, with a high near 91. Southwest wind around 5 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 91 °F

    Chance
    T-storms then
    T-storms
    Likely

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly after 5am. Partly cloudy, with a low around 75. Southwest wind around 5 mph becoming calm in the evening.

    Low: 75 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Saturday

    Saturday: Showers and thunderstorms. High near 90. West wind around 5 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 90 °F

    T-storms
    Likely then
    T-storms

  • Saturday Night

    Saturday Night: Showers and thunderstorms likely before 10pm, then showers likely and possibly a thunderstorm between 10pm and 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 75. West wind around 5 mph becoming calm. Chance of precipitation is 60%.

    Low: 75 °F

    T-storms
    Likely then
    Showers
    Likely

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm before 1pm, then showers and thunderstorms between 1pm and 4pm, then showers and possibly a thunderstorm after 4pm. High near 90. North wind around 5 mph. Chance of precipitation is 80%.

    High: 90 °F

    Showers
    Likely then
    T-storms

  • Sunday Night

    Sunday Night: Showers and thunderstorms likely, mainly before 7pm. Partly cloudy, with a low around 74. Calm wind. Chance of precipitation is 60%.

    Low: 74 °F

    T-storms
    Likely

  • Monday

    Monday: Showers and thunderstorms likely. Partly sunny, with a high near 90. Calm wind becoming north around 5 mph. Chance of precipitation is 70%.

    High: 90 °F

    T-storms
    Likely

  • Monday Night

    Monday Night: A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74. Calm wind.

    Low: 74 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: Showers and thunderstorms. Mostly sunny, with a high near 89. Calm wind becoming south around 5 mph in the afternoon.

    High: 89 °F

    T-storms

Detailed Forecast

Today
Showers and thunderstorms likely, mainly between 1pm and 3pm. Mostly sunny, with a high near 91. Southwest wind around 5 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
A 30 percent chance of showers and thunderstorms, mainly after 5am. Partly cloudy, with a low around 75. Southwest wind around 5 mph becoming calm in the evening.
Saturday
Showers and thunderstorms. High near 90. West wind around 5 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
Showers and thunderstorms likely before 10pm, then showers likely and possibly a thunderstorm between 10pm and 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 75. West wind around 5 mph becoming calm. Chance of precipitation is 60%.
Sunday
Showers likely and possibly a thunderstorm before 1pm, then showers and thunderstorms between 1pm and 4pm, then showers and possibly a thunderstorm after 4pm. High near 90. North wind around 5 mph. Chance of precipitation is 80%.
Sunday Night
Showers and thunderstorms likely, mainly before 7pm. Partly cloudy, with a low around 74. Calm wind. Chance of precipitation is 60%.
Monday
Showers and thunderstorms likely. Partly sunny, with a high near 90. Calm wind becoming north around 5 mph. Chance of precipitation is 70%.
Monday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74. Calm wind.
Tuesday
Showers and thunderstorms. Mostly sunny, with a high near 89. Calm wind becoming south around 5 mph in the afternoon.
Tuesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 74. Calm wind.
Wednesday
Showers and thunderstorms likely. Mostly sunny, with a high near 90. Calm wind becoming south around 5 mph.
Wednesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 74. Calm wind.
Thursday
Showers and thunderstorms likely. Mostly sunny, with a high near 90. Calm wind becoming northeast around 5 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
South Lafourche Airport LA
 29.45°N 90.27°W
Last Update:
6:20 am CDT Aug 1, 2025
Forecast Valid:
10am CDT Aug 1, 2025-6pm CDT Aug 7, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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