Monhegan Island Harbor Weather Forecast

    • 61
    • 67

    Increasing Clouds

    • 60
    • 69

    Partly Sunny

    • 59
    • 65

    Mostly Sunny

    • 60
    • 64

    Chance Rain Showers

    • 60
    • 65

    Chance Rain Showers

    • 60
    • 67

    Chance Rain Showers

Today 29 Aug Lincoln

Sunny. Highs around 80. Light and variable Winds, becoming west around 10 Mph in the afternoon.

Tonight 29 Aug Lincoln

Mostly clear. Lows in the mid 50s. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Monhegan Island Harbor Temperature Statistics

August Temperature

Rockland, Knox County Regional Airport (23.6 miles)

  • Lowest 16 August, 2026

    54 °F

  • Average August

    68.2 °F

  • Highest 6 August, 2026

    86 °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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