Grand Isle Weather Forecast

    • 55
    • 60

    Chance Rain Showers

    • 46
    • 65

    Breezy

    • 46
    • 52

    Sunny

    • 52
    • 62

    Mostly Sunny

    • 48
    • 61

    Mostly Sunny

    • 43
    • 57

    Sunny

Today 13 Jan Coastal Jefferson

Mostly sunny. Highs around 60. North Winds around 5 Mph.

Tonight 13 Jan Coastal Jefferson

Partly cloudy with a slight chance of Showers in the Evening, then mostly cloudy with a chance of Showers after midnight. Lows in the upper 40s. West Winds 5 to 10 Mph. Chance of rain 30 percent.

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Grand Isle Temperature Statistics

January Temperature

Port Fourchon (14.9 miles)

  • Lowest

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  • Average January

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Climate (–Present)

Port Fourchon (14.9 miles)

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  • Average Low –

    71.6 °F

  • Average –

    72.5 °F

  • Average High –

    75.2 °F
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