Winthrop Weather Forecast

    • 3
    • 16

    Decreasing Clouds

    • 11
    • 20

    Chance Snow

    • 20
    • 28

    Chance Snow Showers

    • 18
    • 37

    Chance Rain Showers

    • 22
    • 43

    Rain

    • 8
    • 32

    Chance Snow Showers

Today 14 Dec Northern St. Lawrence

Partly sunny. Highs around 16. Light and variable Winds, becoming northwest around 10 Mph in the afternoon.

Tonight 14 Dec Northern St. Lawrence

Mostly cloudy. Lows around 8 above. Light and variable Winds.

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  • Temperature Real-Time

Winthrop Temperature Statistics

December Temperature

Massena, Massena International-Richards Field (9.9 miles)

  • Lowest 9 December, 2025

    -14.1 °F

  • Average December

    17 °F

  • Highest 3 December, 2025

    33.1 °F

Climate (2020–Present)

Massena, Massena International-Richards Field (9.9 miles)

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  • Average Low 2020–2025

    36.5 °F

  • Average 2020–2025

    46.6 °F

  • Average High 2020–2025

    56.2 °F
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