Mystic River - Island End River Weather Forecast

    • 44
    • 59

    Partly Sunny

    • 46
    • 61

    Partly Sunny

    • 43
    • 55

    Mostly Cloudy

    • 43
    • 61

    Mostly Sunny

    • 39
    • 55

    Mostly Sunny

    • 42
    • 58

    Sunny

    • 47
    • 64

    Mostly Sunny

Today 19 Oct Suffolk

Mostly sunny. Highs in the mid 60s.

Tonight 19 Oct Suffolk

Partly cloudy this Evening, then becoming mostly cloudy. Lows in the mid 40s. North Winds 5 to 10 Mph.

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  • Temperature Real-Time

Mystic River - Island End River Temperature Statistics

October Temperature

Boston, Logan International Airport (2.5 miles)

  • Lowest 17 October, 2026

    39.9 °F

  • Average October

    60.7 °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

    46.6 °F

  • Average 2021–2026

    53.5 °F

  • Average High 2021–2026

    60.9 °F
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