Mystic River - Island End River Weather Forecast

    • 31
    • 37

    Snow

    • 22
    • 38

    Slight Chance Snow

    • 19
    • 38

    Chance Rain

    • 21
    • 28

    Rain Likely

    • 24
    • 31

    Chance Snow

    • 24
    • 41

    Rain Likely

Today 23 Dec Suffolk

Snow likely in the Morning, then snow and rain in the afternoon. Patchy fog in the afternoon. Little or no snow accumulation. Highs in the upper 30s. South Winds 5 to 10 Mph. Chance of precipitation 90 percent.

Tonight 23 Dec Suffolk

Snow and rain Likely, mainly in the evening. Patchy fog in the evening. Little or no snow accumulation. Near steady temperature in the mid 30s. South Winds around 5 Mph, becoming west with Gusts up to 25 Mph after midnight. Chance of precipitation 70 percent.

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Mystic River - Island End River Temperature Statistics

December Temperature

Boston, Logan International Airport (2.5 miles)

  • Lowest 5 December, 2025

    12 °F

  • Average December

    32.7 °F

  • Highest 19 December, 2025

    59 °F

Climate (2020–Present)

Boston, Logan International Airport (2.5 miles)

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  • Average Low 2020–2025

    46.9 °F

  • Average 2020–2025

    53.8 °F

  • Average High 2020–2025

    61.1 °F
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