Winthrop Beach Weather Forecast

    • 29
    • 39

    Gradual Clearing

    • 23
    • 38

    Slight Chance Rain/Snow

    • 14
    • 27

    Mostly Sunny

    • 31
    • 33

    Slight Chance Snow

    • 36
    • 45

    Chance Rain

    • 26
    • 41

    Chance Snow

Today 6 Dec Suffolk

Mostly cloudy. A slight chance of snow Showers this morning. Not as cool with Highs in the upper 30s. Southwest Winds around 5 Mph. Chance of snow 20 percent.

Tonight 6 Dec Suffolk

Partly cloudy. Lows in the mid 20s. West Winds 5 to 10 Mph.

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Winthrop Beach Temperature Statistics

December Temperature

Boston, Logan International Airport (1.9 miles)

  • Lowest 4 December, 2025

    18 °F

  • Average December

    34.6 °F

  • Highest 1 December, 2025

    43 °F

Climate (2020–Present)

Boston, Logan International Airport (1.9 miles)

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  • Average Low 2020–2025

    47 °F

  • Average 2020–2025

    53.8 °F

  • Average High 2020–2025

    61 °F
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