Winthrop Weather Forecast

    • 58
    • 76

    Dense Fog

    • 61
    • 78

    Chance Rain Showers

    • 57
    • 75

    Rain Showers

    • 55
    • 76

    Mostly Sunny

    • 58
    • 77

    Partly Sunny

    • 61
    • 79

    Rain Showers Likely

    • 58
    • 76

    Rain Showers

Today 17 Aug Northern St. Lawrence

Cloudy. A chance of Showers, mainly this morning. Highs in the upper 70s. Light and variable Winds. Chance of rain 50 percent.

Tonight 17 Aug Northern St. Lawrence

Partly cloudy. Isolated Showers until midnight. Patchy dense fog. Lows in the upper 50s. Light and variable Winds. Chance of rain 20 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 15 August, 2026

    53.1 °F

  • Average August

    71.1 °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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