Great Cranberry Island - Bunker Head Weather Forecast

    • 41
    • 45

    Chance Rain

    • 27
    • 52

    Rain

    • 31
    • 37

    Chance Rain

    • 21
    • 43

    Slight Chance Rain

    • 17
    • 26

    Partly Sunny

    • 25
    • 35

    Chance Snow

Today 18 Dec Coastal Hancock

Mostly sunny. Highs in the mid 40s. Southwest Winds 10 to 15 Mph. Gusts up to 30 Mph this afternoon.

Tonight 18 Dec Coastal Hancock

Mostly cloudy. Patchy fog. A chance of rain after midnight. Not as cool with Lows in the upper 30s. Temperature rising into the mid 40s after midnight. South Winds 15 to 20 Mph. Gusts up to 35 Mph, increasing to 45 Mph after midnight. Chance of rain 40 percent.

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Great Cranberry Island - Bunker Head Temperature Statistics

December Temperature

Bar Harbor, Hancock County-Bar Harbor Airport (15.5 miles)

  • Lowest 9 December, 2025

    -0.9 °F

  • Average December

    23.4 °F

  • Highest 10 December, 2025

    45 °F

Climate (2020–Present)

Bar Harbor, Hancock County-Bar Harbor Airport (15.5 miles)

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  • Average Low 2020–2025

    38.4 °F

  • Average 2020–2025

    46.6 °F

  • Average High 2020–2025

    54.7 °F
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