Monhegan Island Harbor Weather Forecast

    • 56
    • 68

    Mostly Sunny

    • 60
    • 66

    Mostly Cloudy

    • 63
    • 66

    Partly Sunny

    • 62
    • 72

    Slight Chance Rain Showers

    • 63
    • 71

    Mostly Cloudy

    • 64
    • 72

    Partly Sunny

    • 63
    • 72

    Partly Sunny

Today 4 Aug Lincoln

Sunny. Highs in the mid 80s. West Winds around 10 Mph with Gusts up to 25 Mph.

Tonight 4 Aug Lincoln

Clear. Lows around 60. Southwest Winds around 10 Mph in the Evening, becoming light and variable.

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Monhegan Island Harbor Temperature Statistics

August Temperature

Rockland, Knox County Regional Airport (23.6 miles)

  • Lowest 1 August, 2026

    55.9 °F

  • Average August

    66.7 °F

  • Highest 2 August, 2026

    75.9 °F

Climate (2021–2026)

Rockland, Knox County Regional Airport (23.6 miles)

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  • Average Low 2021–2026

    39.5 °F

  • Average 2021–2026

    47.6 °F

  • Average High 2021–2026

    54.8 °F
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