Boston Harbor - Boston Main Channel Weather Forecast

    • 63
    • 77

    Increasing Clouds

    • 66
    • 78

    Chance Rain Showers

    • 53
    • 75

    Mostly Sunny

    • 56
    • 65

    Chance Rain Showers

    • 57
    • 62

    Chance Rain Showers

    • 57
    • 61

    Chance Rain Showers

    • 56
    • 61

    Chance Rain Showers

Today 16 Sep Suffolk

Mostly sunny. Not as cool with Highs in the upper 70s. Southwest Winds 5 to 10 Mph.

Tonight 16 Sep Suffolk

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the lower 60s. Southwest Winds 5 to 10 Mph.

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Boston Harbor - Boston Main Channel Temperature Statistics

September Temperature

Boston, Logan International Airport (0.6 miles)

  • Lowest 12 September, 2026

    56.6 °F

  • Average September

    69.8 °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

    46.7 °F

  • Average 2021–2026

    53.6 °F

  • Average High 2021–2026

    61 °F
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