Harpswell Cove Weather Forecast

    • 58
    • 67

    Increasing Clouds

    • 60
    • 66

    Rain Showers Likely

    • 50
    • 69

    Mostly Sunny

    • 54
    • 69

    Partly Sunny

    • 57
    • 72

    Partly Sunny

    • 55
    • 72

    Chance Rain Showers

Today 12 Sep Coastal Cumberland

Mostly sunny. Highs in the lower 70s. Light and variable Winds, becoming south around 10 Mph with Gusts up to 20 Mph in the afternoon.

Tonight 12 Sep Coastal Cumberland

Partly cloudy. A chance of Showers after midnight. Lows in the mid 50s. South Winds around 10 Mph. Chance of rain 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Harpswell Cove Temperature Statistics

September Temperature

Wiscasset Airport (13 miles)

  • Lowest 9 September, 2026

    48 °F

  • Average September

    65.5 °F

  • Highest 4 September, 2026

    82 °F

Climate (2021–2026)

Wiscasset Airport (13 miles)

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  • Average Low 2021–2026

    38.7 °F

  • Average 2021–2026

    48.5 °F

  • Average High 2021–2026

    58.1 °F
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