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 11:35 pm CDT
Extended Forecast for

11 Miles WSW Davant LA

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

  • Tonight

    Tonight: Mostly clear, with a low around 79. West wind around 5 mph becoming calm.

    Low: 79 °F

    Mostly Clear

  • Sunday

    Sunday: A slight chance of showers and thunderstorms between 2pm and 5pm. Sunny and hot, with a high near 97. Heat index values as high as 112. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 20%.

    High: 97 °F

    Sunny then
    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms between 8pm and 9pm. Mostly clear, with a low around 80. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.

    Low: 80 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Monday

    Monday: A 50 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 95. Heat index values as high as 109. Calm wind becoming south around 5 mph in the afternoon.

    High: 95 °F

    Sunny then
    Chance
    T-storms

  • Monday Night

    Monday Night: Partly cloudy, with a low around 79. Calm wind.

    Low: 79 °F

    Partly Cloudy

  • Tuesday

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

    High: 93 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 81. Southwest wind around 5 mph.

    Low: 81 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms, mainly after 1pm. Sunny, with a high near 92. West wind 5 to 10 mph.

    High: 92 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 78. Southwest wind around 5 mph.

    Low: 78 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

Detailed Forecast

Tonight
Mostly clear, with a low around 79. West wind around 5 mph becoming calm.
Sunday
A slight chance of showers and thunderstorms between 2pm and 5pm. Sunny and hot, with a high near 97. Heat index values as high as 112. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 20%.
Sunday Night
A slight chance of showers and thunderstorms between 8pm and 9pm. Mostly clear, with a low around 80. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Monday
A 50 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 95. Heat index values as high as 109. Calm wind becoming south around 5 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 79. Calm wind.
Tuesday
A 50 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. Calm wind becoming south around 5 mph in the afternoon.
Tuesday Night
A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 81. Southwest wind around 5 mph.
Wednesday
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Sunny, with a high near 92. West wind 5 to 10 mph.
Wednesday Night
A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 78. Southwest wind around 5 mph.
Thursday
Showers and thunderstorms likely, mainly after 1pm. Mostly sunny, with a high near 89. West wind around 5 mph.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 78. Southwest wind around 5 mph.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 89. Calm wind becoming southwest around 5 mph in the afternoon.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 78. Southwest wind around 5 mph becoming calm in the evening.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 90. Calm wind becoming southeast around 5 mph in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
11 Miles WSW Davant LA
 29.55°N 89.97°W
Last Update:
11:11 pm CDT Aug 22, 2026
Forecast Valid:
11pm CDT Aug 22, 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