Mystic River - Island End River Weather Forecast

    • 43
    • 73

    Mostly Sunny

    • 34
    • 53

    Sunny

    • 43
    • 57

    Mostly Sunny

    • 53
    • 66

    Mostly Sunny

    • 44
    • 71

    Mostly Sunny

    • 43
    • 61

    Partly Sunny

    • 49
    • 62

    Partly Sunny

Today 26 Oct Suffolk

Mostly sunny. Near steady temperature in the mid 60s. West Winds 5 to 10 Mph.

Tonight 26 Oct Suffolk

Mostly cloudy. Lows in the mid 40s. Northwest Winds 5 to 10 Mph. Gusts up 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 18 October, 2026

    37.7 °F

  • Average October

    57.7 °F

  • Highest 2 October, 2026

    87.7 °F

Climate (2021–2026)

Boston, Logan International Airport (2.5 miles)

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  • Average Low 2021–2026

    46.5 °F

  • Average 2021–2026

    53.5 °F

  • Average High 2021–2026

    60.9 °F
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