Deer Isle - Sylvester Cove Weather Forecast

    • 57
    • 69

    Increasing Clouds

    • 56
    • 71

    Chance Rain Showers

    • 56
    • 67

    Mostly Cloudy

    • 52
    • 68

    Chance Rain Showers

    • 54
    • 68

    Chance Rain Showers

    • 56
    • 72

    Partly Sunny

    • 55
    • 71

    Chance Rain Showers

Today 9 Jun Coastal Hancock

Sunny. Near steady temperature in the upper 70s. Southwest Winds around 10 Mph with Gusts up to 25 Mph.

Tonight 9 Jun Coastal Hancock

Partly cloudy. Lows in the upper 50s. Southwest Winds 5 to 10 Mph. Gusts up to 25 Mph this evening.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Deer Isle - Sylvester Cove Temperature Statistics

June Temperature

Rockland, Knox County Regional Airport (21.1 miles)

  • Lowest 2 June, 2026

    37.9 °F

  • Average June

    56.2 °F

  • Highest 5 June, 2026

    75.9 °F

Climate (2021–Present)

Rockland, Knox County Regional Airport (21.1 miles)

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  • Average Low 2021–2026

    39.5 °F

  • Average 2021–2026

    47.6 °F

  • Average High 2021–2026

    54.7 °F
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