Medicant Island Weather Forecast
- 77
- 86
Mostly Sunny
- 77
- 87
Mostly Sunny
- 75
- 88
Mostly Sunny
- 75
- 88
Mostly Sunny
- 75
- 87
Slight Chance Thunderstorms
- 76
- 88
Chance Thunderstorms
Today 18 Sep Coastal Jefferson
Sunny. Highs in the mid 80s. East Winds 5 to 10 Mph.
Tonight 18 Sep Coastal Jefferson
Mostly clear. Lows in the mid 70s. East Winds 5 to 10 Mph.
Medicant Island Temperature Statistics
September Temperature
Galliano, South Lafourche Airport (17.4 miles)
Lowest 3 September, 2025
64.9 °FAverage September
79.4 °FHighest 12 September, 2025
90.3 °F
Climate (2020–Present)
Galliano, South Lafourche Airport (17.4 miles)
Average Low 2020–2025
64.4 °FAverage 2020–2025
72.2 °FAverage High 2020–2025
79.7 °F