Winthrop Weather Forecast

    • 53
    • 81

    Mostly Sunny

    • 65
    • 86

    Chance Rain Showers

    • 67
    • 79

    Rain Showers

    • 67
    • 86

    Chance Rain Showers

    • 63
    • 86

    Rain Showers Likely

    • 62
    • 82

    Partly Sunny

Today 8 Jun Northern St. Lawrence

Sunny, warmer with Highs in the lower 80s. Light and variable Winds.

Tonight 8 Jun Northern St. Lawrence

Clear. Lows in the lower 50s. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Winthrop Temperature Statistics

June Temperature

Massena, Massena International-Richards Field (9.9 miles)

  • Lowest 1 June, 2026

    39.7 °F

  • Average June

    64.1 °F

  • Highest 3 June, 2026

    83.6 °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

    46.1 °F

  • Average High 2021–2026

    55.8 °F
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