Grand Isle State Park Weather Forecast

    • 68
    • 74

    Decreasing Clouds

    • 70
    • 75

    Partly Sunny

    • 70
    • 75

    Mostly Sunny

    • 70
    • 76

    Sunny

    • 70
    • 77

    Sunny

    • 70
    • 77

    Sunny

Today 18 Oct Coastal Jefferson

Mostly sunny. Highs in the lower 70s. Northeast Winds 15 to 20 Mph with Gusts up to 30 Mph.

Tonight 18 Oct Coastal Jefferson

Mostly clear. Lows in the upper 50s. Northeast Winds 10 to 15 Mph with Gusts up to 25 Mph.

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Grand Isle State Park Temperature Statistics

October Temperature

Port Fourchon (17.4 miles)

  • Lowest

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  • Average October

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  • Highest

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Climate (–)

Port Fourchon (17.4 miles)

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  • Average Low –

    71.6 °F

  • Average –

    72.5 °F

  • Average High –

    75.2 °F
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