Medicant Island Weather Forecast

    • 51
    • 74

    Chance Rain Showers

    • 38
    • 65

    Breezy

    • 39
    • 52

    Mostly Sunny

    • 46
    • 58

    Mostly Sunny

    • 56
    • 65

    Partly Sunny

    • 60
    • 70

    Chance Rain Showers

    • 55
    • 70

    Slight Chance Thunderstorms

Today 28 Dec Coastal Jefferson

Sunny. A slight chance of Showers and Thunderstorms. Near steady temperature in the lower 70s. South Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 20 percent.

Tonight 28 Dec Coastal Jefferson

Mostly cloudy with a slight chance of Thunderstorms. A slight chance of Showers in the Evening, then a chance of Showers after midnight. Patchy fog. Cooler with Lows in the lower 50s. South Winds 5 to 10 Mph, increasing to west 15 to 20 Mph with Gusts up to 30 Mph after midnight. Chance of rain 50 percent.

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Medicant Island Temperature Statistics

December Temperature

Galliano, South Lafourche Airport (17.4 miles)

  • Lowest 15 December, 2025

    33.3 °F

  • Average December

    58.9 °F

  • Highest 21 December, 2025

    79.3 °F

Climate (2020–Present)

Galliano, South Lafourche Airport (17.4 miles)

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  • Average Low 2020–2025

    64.4 °F

  • Average 2020–2025

    72.4 °F

  • Average High 2020–2025

    79.8 °F
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