Grand Isle SPB Weather Forecast

    • 53
    • 69

    Chance Rain Showers

    • 55
    • 60

    Sunny

    • 61
    • 67

    Partly Sunny

    • 60
    • 67

    Slight Chance Rain Showers

    • 62
    • 66

    Mostly Sunny

    • 61
    • 68

    Mostly Sunny

    • 61
    • 67

    Mostly Sunny

Today 18 Dec Coastal Jefferson

Patchy fog early. Mostly sunny. Near steady temperature in the upper 60s. Southwest Winds 5 to 10 Mph.

Tonight 18 Dec Coastal Jefferson

Partly cloudy. A slight chance of Showers in the evening. Cooler with Lows in the upper 40s. West Winds 10 to 15 Mph, becoming north after midnight. Chance of rain 20 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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