Chesuncook Lake Weather Forecast

    • 51
    • 74

    Mostly Sunny

    • 52
    • 76

    Mostly Cloudy

    • 51
    • 77

    Partly Sunny

    • 37
    • 64

    Mostly Sunny

    • 40
    • 59

    Mostly Sunny

    • 48
    • 68

    Partly Sunny

Today 16 Sep Northern Piscataquis

Patchy fog this morning. Sunny. Highs in the mid 70s. Light and variable Winds.

Tonight 16 Sep Northern Piscataquis

Mostly clear. Patchy fog after midnight. Lows in the upper 40s. Light and variable Winds, becoming southwest around 5 Mph after midnight.

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Chesuncook Lake Temperature Statistics

September Temperature

Greenville (33.6 miles)

  • Lowest 8 September, 2025

    45 °F

  • Average September

    60.8 °F

  • Highest 1 September, 2025

    75 °F

Climate (2020–Present)

Greenville (33.6 miles)

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  • Average Low 2020–2025

    36.3 °F

  • Average 2020–2025

    44 °F

  • Average High 2020–2025

    51.8 °F
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