Mystic River - Island End River Weather Forecast

    • 20
    • 48

    Slight Chance Snow Showers

    • 26
    • 33

    Partly Sunny

    • 30
    • 41

    Mostly Cloudy

    • 21
    • 37

    Partly Sunny

    • 17
    • 32

    Mostly Cloudy

    • 13
    • 25

    Partly Sunny

Today 15 Jan Suffolk

Cloudy with a slight chance of rain in the Morning, then partly sunny in the afternoon. Patchy fog in the morning. Highs in the upper 40s. Temperature falling to around 40 in the afternoon. Southwest Winds 10 to 15 Mph with Gusts up to 30 Mph. Chance of rain 20 percent.

Tonight 15 Jan Suffolk

Partly cloudy. Much cooler with Lows around 20. West Winds 10 to 15 Mph with Gusts up to 35 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

    31.7 °F

  • Highest 9 January, 2026

    52 °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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