Mystic River - Island End River Weather Forecast

    • 22
    • 27

    Mostly Cloudy

    • 23
    • 32

    Mostly Cloudy

    • 14
    • 30

    Slight Chance Snow

    • 19
    • 27

    Partly Sunny

    • 14
    • 31

    Partly Sunny

    • 17
    • 28

    Partly Sunny

Today 30 Dec Suffolk

Partly sunny in the Morning, then becoming mostly cloudy. Blustery and much Colder. Near steady temperature in the mid 20s. West Winds 15 to 25 Mph with Gusts up to 50 Mph.

Tonight 30 Dec Suffolk

Mostly cloudy. Near steady temperature in the mid 20s. West Winds 15 to 20 Mph with Gusts up to 40 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Mystic River - Island End River Temperature Statistics

December Temperature

Boston, Logan International Airport (2.5 miles)

  • Lowest 5 December, 2025

    12 °F

  • Average December

    31.7 °F

  • Highest 19 December, 2025

    59 °F

Climate (2020–Present)

Boston, Logan International Airport (2.5 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    46.9 °F

  • Average 2020–2025

    53.7 °F

  • Average High 2020–2025

    61 °F
Get WillyWeather+ to remove ads