Mystic River - Island End River Weather Forecast

    • 45
    • 68

    Becoming Sunny

    • 42
    • 58

    Sunny

    • 53
    • 65

    Mostly Sunny

    • 52
    • 71

    Mostly Sunny

    • 51
    • 67

    Mostly Sunny

    • 47
    • 65

    Mostly Sunny

Today 5 Oct Suffolk

Sunny. Highs in the upper 60s. West Winds 10 to 15 Mph. Gusts up to 20 Mph, increasing to 30 Mph.

Tonight 5 Oct Suffolk

Clear, cooler with Lows in the mid 40s. West Winds 10 to 15 Mph. Gusts up to 30 Mph, decreasing to 20 Mph after midnight.

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Mystic River - Island End River Temperature Statistics

October Temperature

Boston, Logan International Airport (2.5 miles)

  • Lowest 3 October, 2026

    55.9 °F

  • Average October

    68.5 °F

  • Highest 2 October, 2026

    86 °F

Climate (2021–2026)

Boston, Logan International Airport (2.5 miles)

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  • Average Low 2021–2026

    46.6 °F

  • Average 2021–2026

    53.6 °F

  • Average High 2021–2026

    61 °F
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