Winthrop Weather Forecast

    • 33
    • 38

    Chance Rain

    • 19
    • 68

    Rain/Snow

    • 9
    • 25

    Blustery

    • 22
    • 29

    Mostly Cloudy

    • 28
    • 41

    Chance Rain

    • 26
    • 41

    Snow Likely

    • 21
    • 37

    Chance Snow

Today 15 Mar Northern St. Lawrence

Cloudy. Snow likely this afternoon. Little or no snow accumulation. Highs in the upper 30s. Light and variable Winds, becoming east 10 to 15 Mph this afternoon. Chance of snow 70 percent.

Tonight 15 Mar Northern St. Lawrence

Mostly cloudy. A chance of rain or a slight chance of freezing rain after midnight. Ice accumulation around a trace. Lows in the lower 30s. East Winds 10 to 15 Mph, becoming southeast with Gusts up to 50 Mph after midnight. Chance of precipitation 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Winthrop Temperature Statistics

March Temperature

Massena, Massena International-Richards Field (9.9 miles)

  • Lowest 2 March, 2026

    -15.4 °F

  • Average March

    30.7 °F

  • Highest 9 March, 2026

    64 °F

Climate (2021–Present)

Massena, Massena International-Richards Field (9.9 miles)

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  • Average Low 2021–2026

    36.2 °F

  • Average 2021–2026

    46.3 °F

  • Average High 2021–2026

    56 °F
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