Boston Harbor - Boston Main Channel Weather Forecast

    • 58
    • 68

    Mostly Cloudy

    • 67
    • 77

    Partly Sunny

    • 58
    • 79

    Chance Rain Showers

    • 52
    • 66

    Partly Sunny

    • 53
    • 62

    Slight Chance Rain Showers

    • 46
    • 65

    Mostly Sunny

    • 43
    • 56

    Mostly Sunny

Today 30 Sep Suffolk

Sunny. Highs in the upper 50s.

Tonight 30 Sep Suffolk

Mostly cloudy. Patchy fog after midnight. Lows in the upper 50s. Southwest Winds around 5 Mph.

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Boston Harbor - Boston Main Channel Temperature Statistics

September Temperature

Boston, Logan International Airport (0.6 miles)

  • Lowest 24 September, 2026

    49.6 °F

  • Average September

    65.4 °F

  • Highest 10 September, 2026

    87.7 °F

Climate (2021–2026)

Boston, Logan International Airport (0.6 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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