Islesboro Island - Charlottes Cove Weather Forecast

    • 58
    • 73

    Decreasing Clouds

    • 57
    • 75

    Mostly Sunny

    • 59
    • 73

    Chance Rain Showers

    • 62
    • 73

    Rain Showers Likely

    • 58
    • 77

    Mostly Sunny

    • 58
    • 76

    Mostly Sunny

Today 20 Aug Coastal Waldo

Areas of fog this morning. Partly sunny. Highs in the upper 70s. Light and variable Winds.

Tonight 20 Aug Coastal Waldo

Cloudy in the Evening, then becoming partly cloudy. Lows in the upper 50s. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Islesboro Island - Charlottes Cove Temperature Statistics

August Temperature

Rockland, Knox County Regional Airport (18 miles)

  • Lowest 16 August, 2026

    54 °F

  • Average August

    69.1 °F

  • Highest 6 August, 2026

    86 °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

    54.9 °F
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