Islesboro Island - Turtle Head Cove Weather Forecast

    • 53
    • 72

    Increasing Clouds

    • 56
    • 69

    Mostly Cloudy

    • 57
    • 72

    Partly Sunny

    • 46
    • 70

    Mostly Sunny

    • 44
    • 63

    Mostly Sunny

    • 53
    • 66

    Partly Sunny

Today 16 Sep Coastal Waldo

Sunny. Highs in the mid 70s. Light and variable Winds.

Tonight 16 Sep Coastal Waldo

Mostly clear in the Evening, then becoming partly cloudy. Lows in the lower 50s. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Islesboro Island - Turtle Head Cove Temperature Statistics

September Temperature

Rockland, Knox County Regional Airport (24.2 miles)

  • Lowest 10 September, 2025

    43 °F

  • Average September

    59.9 °F

  • Highest 1 September, 2025

    75.9 °F

Climate (2020–Present)

Rockland, Knox County Regional Airport (24.2 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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