Islesboro Island - Charlottes Cove Weather Forecast

    • 54
    • 81

    Increasing Clouds

    • 52
    • 71

    Sunny

    • 56
    • 70

    Mostly Sunny

    • 60
    • 69

    Chance Rain Showers

    • 54
    • 71

    Partly Sunny

    • 59
    • 69

    Slight Chance Rain Showers

Today 10 Sep Coastal Waldo

Partly sunny. A chance of Showers this morning. Areas of fog this morning. Highs around 80. West Winds 10 to 15 Mph with Gusts up to 30 Mph. Chance of rain 50 percent.

Tonight 10 Sep Coastal Waldo

Partly cloudy. Less humid with Lows in the lower 50s. Northwest Winds 10 to 15 Mph with Gusts up to 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Islesboro Island - Charlottes Cove Temperature Statistics

September Temperature

Rockland, Knox County Regional Airport (18 miles)

  • Lowest 1 September, 2026

    48.9 °F

  • Average September

    61.8 °F

  • Highest 7 September, 2026

    78.1 °F

Climate (2021–2026)

Rockland, Knox County Regional Airport (18 miles)

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  • Average Low 2021–2026

    39.5 °F

  • Average 2021–2026

    47.6 °F

  • Average High 2021–2026

    54.8 °F
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