Islesboro Island - Charlottes Cove Weather Forecast

    • 56
    • 66

    Rain Showers

    • 47
    • 72

    Mostly Sunny

    • 48
    • 62

    Mostly Sunny

    • 48
    • 62

    Chance Rain Showers

    • 47
    • 62

    Partly Sunny

    • 46
    • 62

    Partly Sunny

Today 17 Sep Coastal Waldo

Mostly cloudy. A slight chance of Showers this afternoon. Highs in the upper 60s. Light and variable Winds. Chance of rain 20 percent.

Tonight 17 Sep Coastal Waldo

Showers. Areas of fog. Lows in the mid 50s. Light and variable Winds. Chance of rain 90 percent.

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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 12 September, 2026

    44.1 °F

  • Average September

    62 °F

  • Highest 10 September, 2026

    84 °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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