Dunn Island Weather Forecast

    • 50
    • 60

    Mostly Cloudy

    • 56
    • 61

    Partly Sunny

    • 51
    • 62

    Chance Rain Showers

    • 41
    • 61

    Mostly Sunny

    • 45
    • 60

    Chance Rain Showers

    • 38
    • 62

    Chance Rain Showers

Today 30 Sep Coastal Washington

Partly sunny. Highs in the upper 60s. Southwest Winds around 5 Mph.

Tonight 30 Sep Coastal Washington

Mostly cloudy in the Evening, then becoming partly cloudy. Patchy fog after midnight. Lows around 50. Southwest Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Dunn Island Temperature Statistics

September Temperature

Bar Harbor, Hancock County-Bar Harbor Airport (41 miles)

  • Lowest 24 September, 2026

    39 °F

  • Average September

    58.5 °F

  • Highest 10 September, 2026

    80.1 °F

Climate (2021–2026)

Bar Harbor, Hancock County-Bar Harbor Airport (41 miles)

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  • Average Low 2021–2026

    38.2 °F

  • Average 2021–2026

    46.5 °F

  • Average High 2021–2026

    54.6 °F
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