Winthrop Weather Forecast

    • 21
    • 39

    Chance Snow Showers

    • 18
    • 32

    Chance Snow Showers

    • 31
    • 44

    Mostly Sunny

    • 47
    • 61

    Mostly Cloudy

    • 39
    • 58

    Chance Rain

    • 37
    • 55

    Slight Chance Rain

Today 6 Apr Northern St. Lawrence

Mostly cloudy with a slight chance of snow Showers in the Morning, then partly sunny in the afternoon. Highs around 40. West Winds 10 to 15 Mph. Chance of snow 20 percent.

Tonight 6 Apr Northern St. Lawrence

Partly cloudy until Midnight, then mostly cloudy with a chance of snow Showers after midnight. Little or no snow accumulation. Lows in the lower 20s. Northwest Winds around 10 Mph, becoming north after midnight. Chance of snow 50 percent.

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Winthrop Temperature Statistics

April Temperature

Massena, Massena International-Richards Field (9.9 miles)

  • Lowest 2 April, 2026

    29.6 °F

  • Average April

    42.5 °F

  • Highest 3 April, 2026

    71.1 °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

    46.2 °F

  • Average High 2021–2026

    55.9 °F
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