Winthrop Weather Forecast

    • 26
    • 39

    Becoming Sunny

    • 36
    • 48

    Mostly Cloudy

    • 34
    • 55

    Partly Sunny

    • 35
    • 57

    Partly Sunny

    • 39
    • 56

    Partly Sunny

    • 40
    • 59

    Chance Rain Showers

Today 20 Apr Northern St. Lawrence

Partly sunny. Highs in the upper 30s. Northwest Winds around 10 Mph.

Tonight 20 Apr Northern St. Lawrence

Mostly clear. Lows in the mid 20s. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Winthrop Temperature Statistics

April Temperature

Massena, Massena International-Richards Field (9.9 miles)

  • Lowest 8 April, 2026

    15.7 °F

  • Average April

    43.6 °F

  • Highest 3 April, 2026

    72.6 °F

Climate (2021–Present)

Massena, Massena International-Richards Field (9.9 miles)

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  • Average Low 2021–2026

    36.1 °F

  • Average 2021–2026

    46.1 °F

  • Average High 2021–2026

    55.8 °F
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