Kennebec River - Thorne Island Weather Forecast

    • 53
    • 68

    Decreasing Clouds

    • 54
    • 73

    Partly Sunny

    • 52
    • 72

    Mostly Sunny

    • 53
    • 72

    Mostly Sunny

    • 55
    • 75

    Partly Sunny

    • 56
    • 72

    Partly Sunny

    • 52
    • 74

    Partly Sunny

Today 13 Sep Sagadahoc

Mostly cloudy. Highs in the upper 60s. South Winds around 10 Mph with Gusts up to 20 Mph.

Tonight 13 Sep Sagadahoc

Partly cloudy. Patchy fog after midnight. Lows in the lower 50s. South Winds around 10 Mph in the Evening, becoming light and variable.

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Kennebec River - Thorne Island Temperature Statistics

September Temperature

Wiscasset Airport (5 miles)

  • Lowest 9 September, 2025

    44.1 °F

  • Average September

    63.4 °F

  • Highest 1 September, 2025

    82 °F

Climate (2020–Present)

Wiscasset Airport (5 miles)

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  • Average Low 2020–2025

    38.9 °F

  • Average 2020–2025

    48.5 °F

  • Average High 2020–2025

    57.9 °F
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