Cousins Island Weather Forecast

    • 24
    • 35

    Snow

    • 17
    • 31

    Mostly Cloudy

    • 12
    • 23

    Mostly Sunny

    • 23
    • 28

    Mostly Cloudy

    • 16
    • 35

    Slight Chance Rain

    • 16
    • 26

    Mostly Cloudy

Today 18 Jan Coastal Cumberland

Cloudy. A slight chance of snow in the Morning, then a chance of snow in the afternoon. Highs in the mid 30s. Light and variable Winds. Chance of snow 50 percent.

Tonight 18 Jan Coastal Cumberland

Cloudy. Lows in the mid 20s. Light and variable Winds.

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Cousins Island Temperature Statistics

January Temperature

Portland, Portland International Jetport (11.2 miles)

  • Lowest 5 January, 2026

    6.1 °F

  • Average January

    28.1 °F

  • Highest 14 January, 2026

    46.9 °F

Climate (2021–Present)

Portland, Portland International Jetport (11.2 miles)

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  • Average Low 2021–2026

    40.3 °F

  • Average 2021–2026

    48.8 °F

  • Average High 2021–2026

    57.3 °F
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