Grand Isle SPB Weather Forecast

    • 76
    • 82

    Rain Showers Likely

    • 70
    • 83

    Chance Thunderstorms

    • 73
    • 78

    Sunny

    • 70
    • 81

    Sunny

    • 71
    • 77

    Mostly Sunny

    • 72
    • 78

    Mostly Sunny

Today 18 Oct Coastal Jefferson

Mostly sunny. A slight chance of Showers and Thunderstorms in the afternoon. Highs in the lower 80s. Southeast Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 20 percent.

Tonight 18 Oct Coastal Jefferson

Partly cloudy with a chance of Thunderstorms. A chance of Showers in the Evening, then Showers likely after midnight. Lows in the lower 70s. South Winds 10 to 15 Mph, becoming southwest after midnight. Chance of rain 70 percent.

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Grand Isle SPB 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 (–Present)

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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