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

Hazardous Weather Conditions

Current conditions at

Galliano, South Lafourche Airport (KGAO)

Lat: 29.44°NLon: 90.26°WElev: 0ft.

Fair

82°F

28°C

Humidity 84%
Wind Speed Calm
Barometer 29.98 in
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index90°F (32°C)
Last update 22 Aug 11:55 pm CDT
Extended Forecast for

3 Miles WNW Larose LA

Heat Advisory August 23, 11:00am until August 23, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • Overnight

    Overnight: Mostly clear, with a low around 78. West wind around 5 mph.

    Low: 78 °F

    Mostly Clear

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 97. Heat index values as high as 110. West wind around 5 mph becoming south in the afternoon.

    High: 97 °F

    Sunny then
    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 79. Southwest wind around 5 mph becoming calm in the evening.

    Low: 79 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Monday

    Monday: Showers and thunderstorms likely, mainly after 3pm. Mostly sunny, with a high near 94. Heat index values as high as 109. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 70%.

    High: 94 °F

    Sunny then
    T-storms
    Likely

  • Monday Night

    Monday Night: Showers and thunderstorms likely before 7pm. Partly cloudy, with a low around 78. Calm wind. Chance of precipitation is 60%.

    Low: 78 °F

    T-storms
    Likely then
    Partly Cloudy

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 93 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 78. South wind around 5 mph becoming calm in the evening.

    Low: 78 °F

    Mostly Clear

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 94. Light west wind becoming southwest 5 to 10 mph in the morning.

    High: 94 °F

    Sunny then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 76. Southwest wind around 5 mph.

    Low: 76 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 78. West wind around 5 mph.
Sunday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 97. Heat index values as high as 110. West wind around 5 mph becoming south in the afternoon.
Sunday Night
A 20 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 79. Southwest wind around 5 mph becoming calm in the evening.
Monday
Showers and thunderstorms likely, mainly after 3pm. Mostly sunny, with a high near 94. Heat index values as high as 109. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 70%.
Monday Night
Showers and thunderstorms likely before 7pm. Partly cloudy, with a low around 78. Calm wind. Chance of precipitation is 60%.
Tuesday
A 50 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. Calm wind becoming southwest around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 78. South wind around 5 mph becoming calm in the evening.
Wednesday
A 40 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 94. Light west wind becoming southwest 5 to 10 mph in the morning.
Wednesday Night
Mostly clear, with a low around 76. Southwest wind around 5 mph.
Thursday
Showers and thunderstorms likely, mainly after 1pm. Mostly sunny, with a high near 91. Calm wind becoming west around 5 mph in the morning.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 75. Southwest wind around 5 mph becoming calm.
Friday
Showers and thunderstorms likely. Mostly sunny, with a high near 91. Calm wind becoming west around 5 mph in the afternoon.
Friday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 75. Calm wind.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 91. Calm wind becoming southeast around 5 mph in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WNW Larose LA
 29.59°N 90.42°W
Last Update:
11:11 pm CDT Aug 22, 2026
Forecast Valid:
12am CDT Aug 23, 2026-6pm CDT Aug 29, 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