Deer Isle - Sylvester Cove Weather Forecast

    • 38
    • 55

    Sunny

    • 43
    • 56

    Sunny

    • 40
    • 61

    Mostly Sunny

    • 35
    • 49

    Mostly Sunny

    • 42
    • 50

    Partly Sunny

    • 47
    • 55

    Partly Sunny

Today 24 Oct Coastal Hancock

Sunny. Highs in the mid 50s. Northwest Winds 5 to 10 Mph.

Tonight 24 Oct Coastal Hancock

Clear. Lows in the lower 30s. Northwest Winds around 5 Mph.

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Deer Isle - Sylvester Cove Temperature Statistics

October Temperature

Rockland, Knox County Regional Airport (21.1 miles)

  • Lowest 7 October, 2026

    30.9 °F

  • Average October

    52.4 °F

  • Highest 2 October, 2026

    72 °F

Climate (2021–2026)

Rockland, Knox County Regional Airport (21.1 miles)

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  • Average Low 2021–2026

    39.4 °F

  • Average 2021–2026

    47.5 °F

  • Average High 2021–2026

    54.8 °F
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