Winthrop Weather Forecast

    • 61
    • 87

    Mostly Sunny

    • 73
    • 88

    Chance Thunderstorms

    • 73
    • 92

    Chance Thunderstorms

    • 74
    • 92

    Chance Rain Showers

    • 70
    • 88

    Chance Thunderstorms

    • 67
    • 86

    Rain Showers Likely

Today 29 Jun Northern St. Lawrence

Sunny. Highs in the upper 80s. Light and variable Winds.

Tonight 29 Jun Northern St. Lawrence

Clear until Midnight, then becoming partly cloudy. Lows in the mid 60s. Light and variable Winds.

Graph Plots Open in Graphs

  • 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

    66.7 °F

  • Highest 12 June, 2026

    87.7 °F

Climate (2021–2026)

Massena, Massena International-Richards Field (9.9 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    36.1 °F

  • Average 2021–2026

    46.1 °F

  • Average High 2021–2026

    55.8 °F
Get WillyWeather+ to remove ads