Sullivan Weather Forecast

    • 55
    • 70

    Mostly Sunny

    • 55
    • 72

    Mostly Sunny

    • 54
    • 70

    Mostly Sunny

    • 56
    • 71

    Mostly Sunny

    • 60
    • 75

    Mostly Sunny

    • 61
    • 76

    Partly Sunny

    • 61
    • 75

    Partly Sunny

Today 6 Aug Coastal Hancock

Sunny. Highs in the upper 70s. Northeast Winds around 5 Mph, becoming southeast this afternoon.

Tonight 6 Aug Coastal Hancock

Mostly clear. Patchy fog after midnight. Lows in the upper 50s. Southwest Winds around 5 Mph, becoming northwest after midnight.

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Sullivan Temperature Statistics

August Temperature

Bar Harbor, Hancock County-Bar Harbor Airport (9.3 miles)

  • Lowest 2 August, 2025

    48 °F

  • Average August

    66 °F

  • Highest 4 August, 2025

    80.1 °F

Climate (2020–Present)

Bar Harbor, Hancock County-Bar Harbor Airport (9.3 miles)

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  • Average Low 2020–2025

    38.6 °F

  • Average 2020–2025

    46.7 °F

  • Average High 2020–2025

    54.7 °F
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