Castle Island Weather Forecast

    • 59
    • 83

    Rain Showers Likely

    • 51
    • 64

    Sunny

    • 54
    • 61

    Chance Rain Showers

    • 45
    • 65

    Mostly Sunny

    • 45
    • 56

    Sunny

    • 51
    • 59

    Mostly Sunny

Today 2 Oct Suffolk

Mostly sunny in the Morning, then becoming mostly cloudy. Warmer with Highs in the lower 80s. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 2 Oct Suffolk

Cloudy with a chance of Showers in the Evening, then partly cloudy after midnight. Lows in the upper 50s. Northwest Winds 5 to 10 Mph. Chance of rain 50 percent.

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Castle Island Temperature Statistics

October Temperature

Boston, Logan International Airport (1.2 miles)

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  • Average October

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Climate (2021–2026)

Boston, Logan International Airport (1.2 miles)

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  • Average Low 2021–2026

    46.6 °F

  • Average 2021–2026

    53.6 °F

  • Average High 2021–2026

    60.9 °F
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