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

Dangerous Heat Wave Continues; Enhanced Area of Severe Thunderstorms Today

A prolonged, dangerous heat wave will continue today in the Midwest and Mississippi Valley, and persist through the Independence Day weekend across the Ohio Valley, Mid-South, and East Coast. Widespread moderate to extreme HeatRisk is forecast. Scattered wind damage and large hail are expected from severe thunderstorms impacting parts of Nebraska into Iowa today. Read More >

Current conditions at

Galliano, South Lafourche Airport (KGAO)

Lat: 29.44°NLon: 90.26°WElev: 0ft.

Partly Cloudy

84°F

29°C

Humidity 74%
Wind Speed SE 7 mph
Barometer 30.09 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index92°F (33°C)
Last update 3 Jul 11:55 am CDT
Extended Forecast for

South Lafourche Airport LA

  • This Afternoon

    This Afternoon: A 40 percent chance of showers and thunderstorms, mainly before 2pm. Mostly sunny, with a high near 91. Calm wind becoming southeast around 5 mph.

    High: 91 °F

    Chance
    T-storms

  • Tonight

    Tonight: Mostly clear, with a low around 77. Calm wind.

    Low: 77 °F

    Mostly Clear

  • Independence Day

    Independence Day: A 40 percent chance of showers and thunderstorms, mainly between 2pm and 5pm. Increasing clouds, with a high near 92. Calm wind becoming south around 5 mph in the afternoon.

    High: 92 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms, mainly between 4am and 5am. Mostly clear, with a low around 78. Calm wind.

    Low: 78 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Sunday

    Sunday: Showers and thunderstorms likely, mainly after 1pm. Mostly sunny, with a high near 91. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 70%.

    High: 91 °F

    Chance
    T-storms then
    T-storms
    Likely

  • Sunday Night

    Sunday Night: A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 77. Southwest wind around 5 mph becoming calm.

    Low: 77 °F

    Partly Cloudy
    then Chance
    T-storms

  • Monday

    Monday: Showers likely and possibly a thunderstorm before 1pm, then showers and thunderstorms likely after 1pm. Mostly sunny, with a high near 90. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 60%.

    High: 90 °F

    Showers
    Likely then
    T-storms
    Likely

  • Monday Night

    Monday Night: Mostly clear, with a low around 79. Southwest wind around 5 mph becoming calm in the evening.

    Low: 79 °F

    Mostly Clear

  • Tuesday

    Tuesday: A chance of showers and thunderstorms, mainly after 1pm. Sunny, with a high near 92. Light west wind becoming southwest 5 to 10 mph in the afternoon.

    High: 92 °F

    Chance
    T-storms

Detailed Forecast

This Afternoon
A 40 percent chance of showers and thunderstorms, mainly before 2pm. Mostly sunny, with a high near 91. Calm wind becoming southeast around 5 mph.
Tonight
Mostly clear, with a low around 77. Calm wind.
Independence Day
A 40 percent chance of showers and thunderstorms, mainly between 2pm and 5pm. Increasing clouds, with a high near 92. Calm wind becoming south around 5 mph in the afternoon.
Saturday Night
A 20 percent chance of showers and thunderstorms, mainly between 4am and 5am. Mostly clear, with a low around 78. Calm wind.
Sunday
Showers and thunderstorms likely, mainly after 1pm. Mostly sunny, with a high near 91. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 70%.
Sunday Night
A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 77. Southwest wind around 5 mph becoming calm.
Monday
Showers likely and possibly a thunderstorm before 1pm, then showers and thunderstorms likely after 1pm. Mostly sunny, with a high near 90. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 60%.
Monday Night
Mostly clear, with a low around 79. Southwest wind around 5 mph becoming calm in the evening.
Tuesday
A chance of showers and thunderstorms, mainly after 1pm. Sunny, with a high near 92. Light west wind becoming southwest 5 to 10 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 79. Southwest wind around 5 mph becoming calm in the evening.
Wednesday
A chance of showers and thunderstorms. Sunny, with a high near 93. Calm wind becoming southwest around 5 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 79. Southwest wind around 5 mph becoming calm in the evening.
Thursday
A chance of showers and thunderstorms. Mostly sunny, with a high near 93. Calm wind becoming southwest around 5 mph in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
South Lafourche Airport LA
 29.45°N 90.27°W
Last Update:
11:32 am CDT Jul 3, 2026
Forecast Valid:
12pm CDT Jul 3, 2026-6pm CDT Jul 9, 2026
 
Forecast Discussion
 
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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