Monhegan Island Weather Forecast

    • 56
    • 65

    Partly Sunny

    • 61
    • 65

    Slight Chance Rain Showers

    • 63
    • 67

    Slight Chance Rain Showers

    • 59
    • 67

    Rain Showers Likely

    • 56
    • 64

    Chance Rain Showers

    • 56
    • 63

    Mostly Sunny

Today 3 Sep Lincoln

Partly sunny. Highs in the mid 70s. Light and variable Winds, becoming south around 10 Mph this afternoon.

Tonight 3 Sep Lincoln

Partly cloudy. Patchy fog after midnight. Lows in the lower 50s. Light and variable Winds.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Monhegan Island Temperature Statistics

September Temperature

Rockland, Knox County Regional Airport (23 miles)

  • Lowest 1 September, 2025

    52 °F

  • Average September

    64 °F

  • Highest 1 September, 2025

    75.9 °F

Climate (2020–Present)

Rockland, Knox County Regional Airport (23 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    39.9 °F

  • Average 2020–2025

    48 °F

  • Average High 2020–2025

    55.3 °F
Get WillyWeather+ to remove ads