Winthrop Weather Forecast

    • 60
    • 77

    Chance Rain Showers

    • 62
    • 73

    Chance Rain Showers

    • 64
    • 78

    Rain Showers Likely

    • 59
    • 77

    Chance Rain Showers

    • 56
    • 74

    Chance Rain Showers

    • 52
    • 72

    Partly Sunny

    • 53
    • 74

    Partly Sunny

Today 31 Aug Northern St. Lawrence

Patchy dense fog this morning. Partly sunny. Highs in the upper 70s. Light and variable Winds.

Tonight 31 Aug Northern St. Lawrence

Mostly cloudy. A chance of Showers after midnight. Lows around 60. Light and variable Winds. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Winthrop Temperature Statistics

August Temperature

Massena, Massena International-Richards Field (9.9 miles)

  • Lowest 29 August, 2026

    46 °F

  • Average August

    68.7 °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 °F

  • Average 2021–2026

    46.2 °F

  • Average High 2021–2026

    55.9 °F
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