Winthrop Weather Forecast

    • 51
    • 75

    Mostly Cloudy

    • 44
    • 64

    Rain Showers

    • 36
    • 50

    Rain Showers Likely

    • 32
    • 49

    Chance Rain Showers

    • 33
    • 49

    Chance Rain Showers

    • 36
    • 51

    Chance Rain Showers

Today 28 Apr Northern St. Lawrence

Partly sunny this Morning, then mostly cloudy with a slight chance of Showers this afternoon. Highs in the mid 70s. South Winds 10 to 15 Mph with Gusts up to 30 Mph. Chance of rain 20 percent.

Tonight 28 Apr Northern St. Lawrence

Partly cloudy until Midnight, then becoming mostly cloudy. A 20 percent chance of Showers. Lows in the lower 50s. South Winds 10 to 15 Mph.

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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

    44.3 °F

  • Highest 18 April, 2026

    80.7 °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

    46.2 °F

  • Average High 2021–2026

    55.8 °F
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