Winthrop Weather Forecast

    • 36
    • 48

    Decreasing Clouds

    • 35
    • 52

    Partly Sunny

    • 34
    • 52

    Chance Rain Showers

    • 38
    • 52

    Chance Rain Showers

    • 45
    • 57

    Rain Showers Likely

    • 42
    • 59

    Chance Rain Showers

Today 30 Apr Northern St. Lawrence

Mostly cloudy. Showers, mainly this morning. Highs in the lower 50s. West Winds around 10 Mph. Chance of rain 80 percent.

Tonight 30 Apr Northern St. Lawrence

Partly cloudy. Patchy frost after midnight. Lows in the mid 30s. Northwest Winds around 10 Mph until Midnight, becoming light and variable.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Winthrop Temperature Statistics

April Temperature

Massena, Massena International-Richards Field (9.9 miles)

  • Lowest 8 April, 2026

    15.7 °F

  • Average April

    44.3 °F

  • Highest 18 April, 2026

    80.7 °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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