Grand Isle SPB Weather Forecast

    • 83
    • 88

    Mostly Sunny

    • 83
    • 89

    Mostly Sunny

    • 83
    • 89

    Mostly Sunny

    • 84
    • 89

    Mostly Sunny

    • 83
    • 90

    Mostly Sunny

    • 83
    • 89

    Partly Sunny

Today 14 Aug Coastal Jefferson

Sunny. Near steady temperature in the lower 90s. South Winds 5 to 10 Mph. Heat index Values up to 107.

Tonight 14 Aug Coastal Jefferson

Mostly clear. Lows in the upper 70s. South Winds 5 to 10 Mph, becoming southwest after midnight. Heat index Values up to 106 early this evening.

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Grand Isle SPB Temperature Statistics

August Temperature

Port Fourchon (17.4 miles)

  • Lowest

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  • Average August

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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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