Winthrop Weather Forecast

    • 64
    • 83

    Thunderstorms

    • 63
    • 81

    Thunderstorms

    • 60
    • 75

    Rain Showers

    • 59
    • 75

    Chance Rain Showers

    • 62
    • 79

    Partly Sunny

    • 64
    • 82

    Chance Rain Showers

    • 62
    • 81

    Rain Showers Likely

Today 27 Jul Northern St. Lawrence

Partly sunny. Scattered Showers and Thunderstorms this afternoon. Highs in the lower 80s. Light and variable Winds. Chance of rain 40 percent.

Tonight 27 Jul Northern St. Lawrence

Partly cloudy. Scattered Showers with isolated Thunderstorms until Midnight, then isolated Showers after midnight. Lows in the lower 60s. Light and variable Winds. Chance of rain 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Winthrop Temperature Statistics

July Temperature

Massena, Massena International-Richards Field (9.9 miles)

  • Lowest 23 July, 2026

    47.6 °F

  • Average July

    70.5 °F

  • Highest 1 July, 2026

    91.7 °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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