Grand Isle Weather Forecast

    • 72
    • 77

    Decreasing Clouds

    • 72
    • 77

    Mostly Sunny

    • 73
    • 77

    Mostly Sunny

    • 74
    • 78

    Partly Sunny

    • 74
    • 79

    Mostly Cloudy

    • 75
    • 79

    Mostly Cloudy

Today 25 Apr Coastal Jefferson

Mostly sunny. Highs in the upper 70s. Southeast Winds 5 to 10 Mph.

Tonight 25 Apr Coastal Jefferson

Partly cloudy. Patchy fog after midnight. Lows in the upper 60s. South Winds 5 to 10 Mph.

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Grand Isle Temperature Statistics

April Temperature

Port Fourchon (14.9 miles)

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  • Average April

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Climate (2020–Present)

Port Fourchon (14.9 miles)

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  • Average Low 2020–2020

    77.7 °F

  • Average 2020–2020

    81.5 °F

  • Average High 2020–2020

    84.9 °F
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