Winthrop Weather Forecast

    • 10
    • 16

    Flurries

    • 23
    • 29

    Snow

    • 26
    • 32

    Chance Snow

    • 28
    • 38

    Rain Likely

    • 33
    • 42

    Rain Likely

    • 24
    • 44

    Rain Likely

Today 5 Jan Northern St. Lawrence

A chance of light snow this Morning, then light snow this afternoon. Snow accumulation around an inch. Highs around 15. Light and variable Winds. Chance of snow near 100 percent.

Tonight 5 Jan Northern St. Lawrence

Mostly cloudy. A chance of light snow until midnight. Little or no additional snow accumulation. Lows around 8 above. Light and variable Winds. Chance of snow 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Winthrop Temperature Statistics

January Temperature

Massena, Massena International-Richards Field (9.9 miles)

  • Lowest 2 January, 2026

    -11.9 °F

  • Average January

    6.9 °F

  • Highest 1 January, 2026

    19.9 °F

Climate (2021–Present)

Massena, Massena International-Richards Field (9.9 miles)

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  • Average Low 2021–2026

    36.3 °F

  • Average 2021–2026

    46.3 °F

  • Average High 2021–2026

    56 °F
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