Allagash Wilderness Waterway State Park Weather Forecast

    • 30
    • 36

    Rain

    • 15
    • 51

    Rain

    • 16
    • 25

    Snow Likely

    • 9
    • 33

    Slight Chance Snow

    • 3
    • 16

    Partly Sunny

    • 11
    • 21

    Chance Snow

Today 18 Dec Northern Piscataquis

Mostly sunny. Highs in the mid 30s. Southwest Winds around 5 Mph, becoming south 10 to 15 Mph with Gusts up to 25 Mph this afternoon.

Tonight 18 Dec Northern Piscataquis

Partly cloudy this Evening, then becoming mostly cloudy. Not as cool with Lows in the upper 20s. South Winds 15 to 20 Mph with Gusts up to 30 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Allagash Wilderness Waterway State Park Temperature Statistics

December Temperature

Clayton Lake (23.6 miles)

  • Lowest 5 December, 2025

    -6.2 °F

  • Average December

    10.5 °F

  • Highest 1 December, 2025

    33.1 °F

Climate (2020–Present)

Clayton Lake (23.6 miles)

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  • Average Low 2020–2025

    30.3 °F

  • Average 2020–2025

    40.9 °F

  • Average High 2020–2025

    50.2 °F
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