Monhegan Island Weather Forecast

    • 59
    • 66

    Rain Showers Likely

    • 57
    • 67

    Mostly Sunny

    • 58
    • 66

    Mostly Sunny

    • 61
    • 66

    Partly Sunny

    • 63
    • 68

    Mostly Cloudy

    • 62
    • 70

    Chance Rain Showers

Today 20 Jul Lincoln

Mostly cloudy. Scattered Showers and Thunderstorms this Morning, then rain and scattered Thunderstorms this afternoon. Some Thunderstorms may produce gusty Winds and small hail this afternoon. Highs in the mid 70s. South Winds around 10 Mph with Gusts up to 20 Mph. Chance of rain 90 percent.

Tonight 20 Jul Lincoln

Partly cloudy with Showers likely with scattered Thunderstorms in the Evening, then mostly clear after midnight. Some Thunderstorms may produce gusty Winds and small hail in the evening. Lows in the upper 50s. Light and variable Winds. Chance of rain 70 percent.

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Monhegan Island Temperature Statistics

July Temperature

Rockland, Knox County Regional Airport (23 miles)

  • Lowest 18 July, 2025

    55.9 °F

  • Average July

    66.8 °F

  • Highest 2 July, 2025

    84 °F

Climate (2020–Present)

Rockland, Knox County Regional Airport (23 miles)

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  • Average Low 2020–2025

    40 °F

  • Average 2020–2025

    48.1 °F

  • Average High 2020–2025

    55.3 °F
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