Winthrop Weather Forecast

    • 72
    • 83

    Mostly Cloudy

    • 66
    • 90

    Chance Thunderstorms

    • 62
    • 77

    Rain Showers Likely

    • 61
    • 78

    Slight Chance Thunderstorms

    • 62
    • 82

    Slight Chance Rain Showers

    • 64
    • 82

    Chance Rain Showers

    • 64
    • 82

    Chance Thunderstorms

Today 5 Jul Northern St. Lawrence

Partly sunny with a 20 percent chance of Showers. Highs in the lower 80s. Southwest Winds around 10 Mph.

Tonight 5 Jul Northern St. Lawrence

Partly cloudy. Lows in the lower 70s. Southwest Winds around 10 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Winthrop Temperature Statistics

July Temperature

Massena, Massena International-Richards Field (9.9 miles)

  • Lowest 3 July, 2025

    63 °F

  • Average July

    72.6 °F

  • Highest 2 July, 2025

    82.9 °F

Climate (2020–Present)

Massena, Massena International-Richards Field (9.9 miles)

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

  • Average Low 2020–2025

    36.8 °F

  • Average 2020–2025

    46.7 °F

  • Average High 2020–2025

    56.2 °F
Get WillyWeather+ to remove ads