Topsham Weather Forecast

    • 18
    • 28

    Snow Likely

    • -1
    • 29

    Chance Snow

    • 5
    • 20

    Partly Sunny

    • 7
    • 22

    Partly Sunny

    • 2
    • 22

    Partly Sunny

    • 8
    • 19

    Chance Snow

    • 16
    • 29

    Slight Chance Snow

Today 31 Dec Sagadahoc

Partly sunny. Highs in the upper 20s. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 31 Dec Sagadahoc

Mostly cloudy. A slight chance of snow in the Evening, then snow after midnight. Snow accumulation around an inch. Lows around 18. Light and variable Winds. Chance of snow 90 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Topsham Temperature Statistics

December Temperature

Wiscasset Airport (13 miles)

  • Lowest 9 December, 2025

    -2.9 °F

  • Average December

    26.2 °F

  • Highest 19 December, 2025

    55 °F

Climate (2020–Present)

Wiscasset Airport (13 miles)

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  • Average Low 2020–2025

    38.9 °F

  • Average 2020–2025

    48.5 °F

  • Average High 2020–2025

    58 °F
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