Mystic River - Island End River Weather Forecast

    • 29
    • 38

    Slight Chance Rain/Snow

    • 28
    • 43

    Mostly Sunny

    • 42
    • 49

    Chance Rain

    • 40
    • 49

    Rain

    • 28
    • 46

    Chance Rain

    • 27
    • 37

    Partly Sunny

    • 31
    • 42

    Mostly Cloudy

Today 7 Jan Suffolk

Cloudy with a chance of rain and snow. Patchy fog. Near steady temperature in the mid 30s. Northwest Winds 5 to 10 Mph. Chance of precipitation 40 percent.

Tonight 7 Jan Suffolk

Partly cloudy in the Evening, then clearing. Near steady temperature in the lower 30s. West Winds 5 to 10 Mph.

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Mystic River - Island End River Temperature Statistics

January Temperature

Boston, Logan International Airport (2.5 miles)

  • Lowest 5 January, 2026

    16 °F

  • Average January

    24.4 °F

  • Highest 3 January, 2026

    32 °F

Climate (2021–Present)

Boston, Logan International Airport (2.5 miles)

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  • Average Low 2021–2026

    46.9 °F

  • Average 2021–2026

    53.7 °F

  • Average High 2021–2026

    61 °F
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