Boston Harbor - Boston Main Channel Weather Forecast

    • 69
    • 86

    Mostly Sunny

    • 65
    • 84

    Chance Rain Showers

    • 64
    • 78

    Partly Sunny

    • 66
    • 75

    Chance Rain Showers

    • 66
    • 76

    Chance Rain Showers

    • 64
    • 79

    Mostly Sunny

Today 19 Aug Suffolk

Mostly sunny. Patchy fog this morning. Highs in the mid 80s. Southwest Winds 5 to 10 Mph.

Tonight 19 Aug Suffolk

Mostly clear. Lows in the upper 60s. Southwest Winds 5 to 10 Mph.

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Boston Harbor - Boston Main Channel Temperature Statistics

August Temperature

Boston, Logan International Airport (0.6 miles)

  • Lowest 16 August, 2026

    62.7 °F

  • Average August

    78.1 °F

  • Highest 7 August, 2026

    94.6 °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

    53.7 °F

  • Average High 2021–2026

    61 °F
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