Deer Isle Weather Forecast

    • 23
    • 31

    Mostly Cloudy

    • 30
    • 34

    Slight Chance Rain

    • 39
    • 41

    Chance Rain

    • 34
    • 47

    Mostly Sunny

    • 37
    • 47

    Mostly Sunny

    • 34
    • 52

    Partly Sunny

Today 5 Mar Coastal Hancock

Partly sunny this Morning, then becoming mostly cloudy. Cooler with Highs around 30. Northeast Winds 10 to 15 Mph.

Tonight 5 Mar Coastal Hancock

Mostly cloudy. Lows 17 to 23. Northeast Winds 5 to 10 Mph with Gusts up to 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Deer Isle Temperature Statistics

March Temperature

Bar Harbor, Hancock County-Bar Harbor Airport (21.7 miles)

  • Lowest 2 March, 2026

    1.9 °F

  • Average March

    21.9 °F

  • Highest 3 March, 2026

    35.1 °F

Climate (2021–Present)

Bar Harbor, Hancock County-Bar Harbor Airport (21.7 miles)

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  • Average Low 2021–2026

    38.2 °F

  • Average 2021–2026

    46.5 °F

  • Average High 2021–2026

    54.7 °F
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