Medicant Island Weather Forecast

    • 80
    • 88

    Thunderstorms Likely

    • 80
    • 88

    Chance Thunderstorms

    • 80
    • 88

    Chance Thunderstorms

    • 80
    • 87

    Chance Thunderstorms

    • 80
    • 85

    Chance Thunderstorms

    • 79
    • 87

    Chance Thunderstorms

Today 16 Aug Coastal Jefferson

Sunny. A chance of Showers and Thunderstorms this Morning, then Showers and Thunderstorms likely this afternoon. Highs in the upper 80s. Northwest Winds around 5 Mph. Chance of rain 60 percent.

Tonight 16 Aug Coastal Jefferson

Mostly clear. A chance of Showers and Thunderstorms in the evening. Humid with Lows in the upper 70s. Southwest Winds around 5 Mph, becoming northwest after midnight. Chance of rain 40 percent.

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Medicant Island Temperature Statistics

August Temperature

Galliano, South Lafourche Airport (17.4 miles)

  • Lowest 8 August, 2025

    73.4 °F

  • Average August

    81.4 °F

  • Highest 14 August, 2025

    93 °F

Climate (2020–Present)

Galliano, South Lafourche Airport (17.4 miles)

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  • Average Low 2020–2025

    64.5 °F

  • Average 2020–2025

    72.3 °F

  • Average High 2020–2025

    79.7 °F
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