Mystic River Weather Forecast

    • 58
    • 78

    Sunny

    • 61
    • 79

    Mostly Sunny

    • 68
    • 85

    Mostly Sunny

    • 75
    • 92

    Mostly Sunny

    • 73
    • 97

    Slight Chance Rain Showers

    • 68
    • 85

    Slight Chance Rain Showers

    • 69
    • 84

    Slight Chance Rain Showers

Today 21 Jul Southeast Middlesex

Mostly sunny and cooler. Near steady temperature in the mid 70s. Northwest Winds around 15 Mph with Gusts up to 25 Mph.

Tonight 21 Jul Southeast Middlesex

Clear. Lows in the mid 50s. North Winds 5 to 10 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Mystic River Temperature Statistics

July Temperature

Boston, Logan International Airport (3.7 miles)

  • Lowest 10 July, 2025

    63.6 °F

  • Average July

    76.5 °F

  • Highest 16 July, 2025

    95.6 °F

Climate (2020–Present)

Boston, Logan International Airport (3.7 miles)

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

  • Average Low 2020–2025

    47 °F

  • Average 2020–2025

    53.8 °F

  • Average High 2020–2025

    61.1 °F
Get WillyWeather+ to remove ads