Winthrop Weather Forecast

    • 33
    • 42

    Rain Likely

    • 22
    • 53

    Rain

    • 25
    • 34

    Chance Snow

    • 16
    • 40

    Partly Sunny

    • 11
    • 23

    Partly Sunny

    • 19
    • 28

    Chance Snow

    • 12
    • 31

    Partly Sunny

Today 18 Dec Kennebec

Partly sunny. Highs in the lower 40s. South Winds around 10 Mph.

Tonight 18 Dec Kennebec

Partly cloudy in the Evening, then cloudy with a chance of rain after midnight. Areas of fog. Lows in the mid 30s. South Winds 10 to 15 Mph with Gusts up to 30 Mph. Chance of rain 50 percent.

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Winthrop Temperature Statistics

December Temperature

Augusta, Augusta State Airport (8.7 miles)

  • Lowest 5 December, 2025

    3 °F

  • Average December

    22.2 °F

  • Highest 1 December, 2025

    37 °F

Climate (2020–Present)

Augusta, Augusta State Airport (8.7 miles)

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  • Average Low 2020–2025

    40.5 °F

  • Average 2020–2025

    49 °F

  • Average High 2020–2025

    57.7 °F
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