Boston Harbor - Boston Main Channel Weather Forecast

    • 60
    • 66

    Chance Rain Showers

    • 62
    • 70

    Chance Rain Showers

    • 52
    • 72

    Mostly Sunny

    • 49
    • 61

    Mostly Sunny

    • 53
    • 66

    Partly Sunny

    • 58
    • 71

    Partly Sunny

Today 17 Sep Suffolk

Partly sunny. Patchy fog this morning. Highs in the lower 70s. Northeast Winds 5 to 10 Mph.

Tonight 17 Sep Suffolk

Mostly cloudy with a 40 percent chance of Showers. Patchy fog after midnight. Lows around 60. Southeast Winds 5 to 10 Mph, becoming northeast after midnight.

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Boston Harbor - Boston Main Channel Temperature Statistics

September Temperature

Boston, Logan International Airport (0.6 miles)

  • Lowest 9 September, 2025

    54 °F

  • Average September

    65.7 °F

  • Highest 6 September, 2025

    86 °F

Climate (2020–Present)

Boston, Logan International Airport (0.6 miles)

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  • Average Low 2020–2025

    46.9 °F

  • Average 2020–2025

    53.8 °F

  • Average High 2020–2025

    61.1 °F
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