Iron Island Weather Forecast

    • 51
    • 65

    Increasing Clouds

    • 56
    • 65

    Slight Chance Rain Showers

    • 55
    • 69

    Chance Rain Showers

    • 54
    • 68

    Mostly Sunny

    • 54
    • 69

    Mostly Sunny

    • 56
    • 69

    Mostly Sunny

    • 57
    • 68

    Partly Sunny

Today 12 Sep Coastal Cumberland

Sunny. Highs around 70. South Winds around 10 Mph.

Tonight 12 Sep Coastal Cumberland

Mostly clear. Lows in the upper 40s. Southwest Winds around 10 Mph in the Evening, becoming light and variable.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Iron Island Temperature Statistics

September Temperature

Wiscasset Airport (11.2 miles)

  • Lowest 9 September, 2025

    44.1 °F

  • Average September

    63.5 °F

  • Highest 1 September, 2025

    82 °F

Climate (2020–Present)

Wiscasset Airport (11.2 miles)

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  • Average Low 2020–2025

    38.9 °F

  • Average 2020–2025

    48.5 °F

  • Average High 2020–2025

    57.9 °F
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