Monhegan Island Harbor Weather Forecast

    • 63
    • 66

    Chance Rain Showers

    • 61
    • 68

    Mostly Cloudy

    • 61
    • 67

    Mostly Sunny

    • 61
    • 68

    Mostly Sunny

    • 62
    • 68

    Mostly Cloudy

    • 62
    • 68

    Chance Rain Showers

Today 23 Aug Lincoln

Patchy fog in the morning. Cloudy with a chance of Showers. A slight chance of Thunderstorms in the afternoon. Humid with Highs in the mid 70s. Light and variable Winds. Chance of rain 50 percent.

Tonight 23 Aug Lincoln

Mostly cloudy with a chance of Showers. Humid with Lows in the lower 60s. Light and variable Winds. Chance of rain 50 percent.

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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

    68.8 °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

    54.9 °F
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