Harbor Weather Forecast

    • 58
    • 62

    Rain Showers

    • 49
    • 68

    Mostly Sunny

    • 52
    • 59

    Partly Sunny

    • 51
    • 58

    Chance Rain Showers

    • 49
    • 60

    Slight Chance Rain Showers

    • 49
    • 58

    Partly Sunny

Today 17 Sep Knox

Mostly cloudy. A chance of Sprinkles this Morning, then a slight chance of Showers this afternoon. Highs in the upper 60s. Light and variable Winds. Chance of rain 20 percent.

Tonight 17 Sep Knox

Showers. Areas of fog. Lows in the mid 50s. Light and variable Winds. Chance of rain 90 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Harbor Temperature Statistics

September Temperature

Wiscasset Airport (16.8 miles)

  • Lowest 15 September, 2026

    42.1 °F

  • Average September

    64.9 °F

  • Highest 10 September, 2026

    87.1 °F

Climate (2021–2026)

Wiscasset Airport (16.8 miles)

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  • Average Low 2021–2026

    38.7 °F

  • Average 2021–2026

    48.5 °F

  • Average High 2021–2026

    58.1 °F
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