Boston Harbor - Chelsea Weather Forecast

    • 46
    • 67

    Mostly Sunny

    • 48
    • 63

    Partly Cloudy

    • 56
    • 64

    Rain

    • 54
    • 66

    Slight Chance Rain

    • 51
    • 65

    Rain Showers Likely

    • 45
    • 60

    Slight Chance Rain Showers

    • 46
    • 58

    Partly Sunny

Today 9 Oct Suffolk

Partly sunny with a 30 percent chance of Showers. Highs in the upper 50s.

Tonight 9 Oct Suffolk

Mostly clear. Lows in the mid 40s. West Winds 5 to 10 Mph. Gusts up to 30 Mph this evening.

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Boston Harbor - Chelsea Temperature Statistics

October Temperature

Boston, Logan International Airport (1.9 miles)

  • Lowest 7 October, 2026

    46 °F

  • Average October

    62.3 °F

  • Highest 2 October, 2026

    87.7 °F

Climate (2021–2026)

Boston, Logan International Airport (1.9 miles)

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  • Average Low 2021–2026

    46.6 °F

  • Average 2021–2026

    53.6 °F

  • Average High 2021–2026

    61 °F
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