Grand Isle SPB Weather Forecast

    • 55
    • 69

    Rain Showers

    • 55
    • 61

    Rain Showers

    • 60
    • 65

    Rain Showers

    • 54
    • 67

    Chance Rain Showers

    • 51
    • 60

    Partly Sunny

    • 55
    • 60

    Mostly Sunny

    • 59
    • 67

    Mostly Sunny

Today 4 Dec Coastal Jefferson

A chance of Thunderstorms. Showers. Locally heavy rainfall possible early. Near steady temperature in the mid 60s. East Winds 10 to 15 Mph. Chance of rain 90 percent.

Tonight 4 Dec Coastal Jefferson

Cloudy. Showers likely with a slight chance of Thunderstorms this Evening, then a chance of Showers and Thunderstorms after midnight. Lows in the mid 50s. Northeast Winds 5 to 10 Mph, becoming north after midnight. Chance of rain 70 percent.

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Grand Isle SPB Temperature Statistics

December Temperature

Port Fourchon (17.4 miles)

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  • Average December

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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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