Outer Heron Island Weather Forecast

    • 50
    • 70

    Becoming Sunny

    • 54
    • 60

    Mostly Sunny

    • 53
    • 59

    Chance Rain

    • 51
    • 61

    Mostly Cloudy

    • 50
    • 58

    Partly Sunny

    • 51
    • 57

    Partly Sunny

Today 18 Sep Lincoln

Areas of fog in the morning. Mostly sunny. Highs in the mid 70s. Northwest Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 18 Sep Lincoln

Mostly clear. Lows in the lower 40s. Northwest Winds around 10 Mph with Gusts up to 20 Mph in the Evening, becoming light and variable.

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Outer Heron Island Temperature Statistics

September Temperature

Wiscasset Airport (14.3 miles)

  • Lowest 15 September, 2026

    42.1 °F

  • Average September

    64.9 °F

  • Highest 10 September, 2026

    87.1 °F

Climate (2021–2026)

Wiscasset Airport (14.3 miles)

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  • Average Low 2021–2026

    38.7 °F

  • Average 2021–2026

    48.5 °F

  • Average High 2021–2026

    58.1 °F
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