Monhegan Island Harbor Weather Forecast

    • 54
    • 58

    Rain

    • 55
    • 61

    Rain Likely

    • 56
    • 61

    Mostly Cloudy

    • 59
    • 64

    Partly Sunny

    • 54
    • 66

    Slight Chance Rain Showers

    • 52
    • 60

    Partly Sunny

    • 53
    • 60

    Chance Rain Showers

Today 28 Sep Lincoln

Partly sunny. A chance of Showers in the morning. Highs in the mid 60s. Chance of rain 40 percent.

Tonight 28 Sep Lincoln

Rain. Areas of fog. Lows in the lower 50s. Northeast Winds around 10 Mph. Chance of rain near 100 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Monhegan Island Harbor Temperature Statistics

September Temperature

Rockland, Knox County Regional Airport (23.6 miles)

  • Lowest 24 September, 2026

    37 °F

  • Average September

    59.6 °F

  • Highest 10 September, 2026

    84 °F

Climate (2021–2026)

Rockland, Knox County Regional Airport (23.6 miles)

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  • Average Low 2021–2026

    39.4 °F

  • Average 2021–2026

    47.6 °F

  • Average High 2021–2026

    54.8 °F
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