Grand Isle State Park Weather Forecast

    • 77
    • 83

    Rain Showers

    • 77
    • 82

    Rain Showers Likely

    • 77
    • 83

    Rain Showers Likely

    • 78
    • 83

    Chance Thunderstorms

    • 78
    • 83

    Rain Showers Likely

    • 77
    • 83

    Rain Showers Likely

Today 4 Oct Coastal Jefferson

Showers. A chance of Thunderstorms this Morning, then Thunderstorms likely this afternoon. Some Thunderstorms may produce heavy rainfall this morning. Some Thunderstorms may produce heavy rainfall this afternoon. Highs in the lower 80s. East Winds around 5 Mph. Chance of rain 90 percent.

Tonight 4 Oct Coastal Jefferson

Mostly cloudy. Showers likely with a chance of Thunderstorms in the Evening, then a chance of Showers and Thunderstorms after midnight. Some Thunderstorms may produce heavy rainfall in the evening. Humid with Lows in the lower 70s. North Winds 5 to 10 Mph. Chance of rain 70 percent.

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Grand Isle State Park Temperature Statistics

October Temperature

Port Fourchon (17.4 miles)

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  • Average October

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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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