Winthrop Weather Forecast

    • 57
    • 71

    Rain Showers Likely

    • 56
    • 72

    Chance Rain Showers

    • 61
    • 78

    Partly Sunny

    • 62
    • 81

    Rain Showers Likely

    • 53
    • 75

    Chance Rain Showers

    • 54
    • 74

    Partly Sunny

    • 60
    • 77

    Chance Rain Showers

Today 24 Aug Northern St. Lawrence

Partly sunny late this Morning, then becoming mostly cloudy. Scattered Showers with isolated Thunderstorms. Highs in the lower 70s. Southwest Winds around 10 Mph. Chance of rain 50 percent.

Tonight 24 Aug Northern St. Lawrence

Cloudy with scattered Showers. Lows in the mid 50s. Light and variable Winds. Chance of rain 50 percent.

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Winthrop Temperature Statistics

August Temperature

Massena, Massena International-Richards Field (9.9 miles)

  • Lowest 22 August, 2026

    50 °F

  • Average August

    69.9 °F

  • Highest 6 August, 2026

    87.7 °F

Climate (2021–2026)

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

    55.9 °F
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