Little Mark Island Weather Forecast

    • 51
    • 70

    Becoming Sunny

    • 54
    • 60

    Mostly Sunny

    • 54
    • 59

    Chance Rain

    • 51
    • 62

    Mostly Cloudy

    • 50
    • 59

    Partly Sunny

    • 50
    • 58

    Partly Sunny

Today 18 Sep Coastal Cumberland

Mostly sunny. Highs in the upper 70s. Northwest Winds 10 to 15 Mph with Gusts up to 30 Mph.

Tonight 18 Sep Coastal Cumberland

Partly cloudy. Lows in the mid 40s. Northwest Winds around 10 Mph with Gusts up to 25 Mph in the Evening, becoming light and variable.

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Little Mark Island Temperature Statistics

September Temperature

Portland, Portland International Jetport (14.3 miles)

  • Lowest 12 September, 2026

    43.6 °F

  • Average September

    64.2 °F

  • Highest 10 September, 2026

    85.6 °F

Climate (2021–2026)

Portland, Portland International Jetport (14.3 miles)

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  • Average Low 2021–2026

    40 °F

  • Average 2021–2026

    48.7 °F

  • Average High 2021–2026

    57.3 °F
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