Hope Island Weather Forecast

    • 58
    • 67

    Decreasing Clouds

    • 61
    • 73

    Mostly Sunny

    • 58
    • 70

    Partly Sunny

    • 64
    • 66

    Chance Rain Showers

    • 58
    • 73

    Partly Sunny

    • 55
    • 65

    Mostly Sunny

Today 6 Sep Coastal Cumberland

Partly sunny. A chance of rain this morning. Highs in the lower 70s. North Winds around 10 Mph with Gusts up to 25 Mph. Chance of rain 50 percent.

Tonight 6 Sep Coastal Cumberland

Mostly clear. Lows in the lower 50s. Northwest Winds around 10 Mph in the Evening, becoming light and variable.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Hope Island Temperature Statistics

September Temperature

Portland, Portland International Jetport (9.9 miles)

  • Lowest 1 September, 2026

    53.7 °F

  • Average September

    65.2 °F

  • Highest 4 September, 2026

    80.1 °F

Climate (2021–2026)

Portland, Portland International Jetport (9.9 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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