Castle Island Weather Forecast

    • 16
    • 34

    Snow Likely

    • 19
    • 27

    Mostly Sunny

    • 22
    • 31

    Slight Chance Snow

    • 14
    • 30

    Partly Sunny

    • 21
    • 25

    Slight Chance Snow

    • 29
    • 35

    Slight Chance Rain/Snow

Today 1 Jan Suffolk

Cloudy with snow likely this Morning, then mostly sunny this afternoon. Little or no snow accumulation. Highs in the lower 30s. Temperature falling into the lower 20s this afternoon. West Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of snow 70 percent.

Tonight 1 Jan Suffolk

Mostly clear. Cooler with Lows around 15. West Winds 10 to 15 Mph with Gusts up to 30 Mph.

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Castle Island Temperature Statistics

January Temperature

Boston, Logan International Airport (1.2 miles)

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Climate (2021–Present)

Boston, Logan International Airport (1.2 miles)

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  • Average Low 2021–2025

    46.9 °F

  • Average 2021–2025

    53.7 °F

  • Average High 2021–2025

    61 °F
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