Grand Isle (Outside) Weather Forecast

    • 57
    • 68

    Breezy

    • 60
    • 67

    Mostly Sunny

    • 64
    • 68

    Mostly Sunny

    • 64
    • 72

    Partly Sunny

    • 64
    • 71

    Mostly Sunny

    • 65
    • 71

    Mostly Sunny

Today 29 Oct Coastal Jefferson

Sunny, Breezy, cooler. Less humid with Highs in the mid 60s. Northwest Winds 20 to 25 Mph with Gusts up to 40 Mph.

Tonight 29 Oct Coastal Jefferson

Showers likely with a slight chance of Thunderstorms. Breezy with Lows in the mid 50s. Southwest Winds 20 to 25 Mph with Gusts up to 40 Mph. Chance of rain 70 percent.

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Grand Isle (Outside) Temperature Statistics

October Temperature

Port Fourchon (18 miles)

  • Lowest

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  • Average October

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  • Highest

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Climate (–Present)

Port Fourchon (18 miles)

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  • Average Low –

    71.6 °F

  • Average –

    72.5 °F

  • Average High –

    75.2 °F
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