Islesboro Island - Coombs Cove Weather Forecast

    • 49
    • 66

    Becoming Sunny

    • 47
    • 65

    Mostly Sunny

    • 51
    • 65

    Partly Sunny

    • 48
    • 70

    Mostly Sunny

    • 49
    • 64

    Mostly Sunny

    • 52
    • 62

    Partly Sunny

Today 8 Sep Coastal Waldo

Partly sunny. Highs in the lower 70s. Light and variable Winds.

Tonight 8 Sep Coastal Waldo

Partly cloudy in the Evening, then clearing. Lows in the mid 40s. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Islesboro Island - Coombs Cove Temperature Statistics

September Temperature

Rockland, Knox County Regional Airport (22.4 miles)

  • Lowest 3 September, 2025

    50 °F

  • Average September

    62.2 °F

  • Highest 1 September, 2025

    75.9 °F

Climate (2020–Present)

Rockland, Knox County Regional Airport (22.4 miles)

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  • Average Low 2020–2025

    39.9 °F

  • Average 2020–2025

    48 °F

  • Average High 2020–2025

    55.3 °F
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