Winthrop Weather Forecast

    • -11
    • 12

    Flurries

    • -4
    • 5

    Cold

    • -10
    • 10

    Cold

    • -3
    • 13

    Partly Sunny

    • 8
    • 22

    Partly Sunny

    • 1
    • 23

    Mostly Cloudy

Today 29 Jan Northern St. Lawrence

Partly sunny with isolated Flurries. Highs around 12. Light and variable Winds, becoming northwest around 10 Mph this afternoon.

Tonight 29 Jan Northern St. Lawrence

Partly cloudy. Colder with Lows around 11 below. West Winds around 10 Mph. Wind chill Values as low as 25 below.

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Winthrop Temperature Statistics

January Temperature

Massena, Massena International-Richards Field (9.9 miles)

  • Lowest 24 January, 2026

    -19.4 °F

  • Average January

    15.9 °F

  • Highest 9 January, 2026

    49.6 °F

Climate (2021–Present)

Massena, Massena International-Richards Field (9.9 miles)

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  • Average Low 2021–2026

    36.2 °F

  • Average 2021–2026

    46.3 °F

  • Average High 2021–2026

    55.9 °F
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