Boston Harbor - Charles River Entrance Weather Forecast

    • 51
    • 73

    Decreasing Clouds

    • 54
    • 71

    Partly Sunny

    • 54
    • 69

    Partly Sunny

    • 55
    • 78

    Mostly Sunny

    • 50
    • 70

    Mostly Sunny

    • 54
    • 73

    Mostly Sunny

Today 8 Sep Suffolk

Mostly sunny. Highs in the lower 70s. North Winds around 5 Mph.

Tonight 8 Sep Suffolk

Partly cloudy in the Evening, then clearing. Lows in the lower 50s. Southeast Winds around 5 Mph, becoming north after midnight.

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Boston Harbor - Charles River Entrance Temperature Statistics

September Temperature

Boston, Logan International Airport (2.5 miles)

  • Lowest 4 September, 2025

    59 °F

  • Average September

    69 °F

  • Highest 6 September, 2025

    86 °F

Climate (2020–Present)

Boston, Logan International Airport (2.5 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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