Mystic River - Island End River Weather Forecast

    • 55
    • 82

    Rain Showers

    • 58
    • 75

    Mostly Sunny

    • 65
    • 89

    Mostly Sunny

    • 67
    • 90

    Chance Rain Showers

    • 67
    • 90

    Chance Rain Showers

    • 67
    • 85

    Slight Chance Thunderstorms

Today 7 Jun Suffolk

Partly sunny with scattered Showers with isolated Thunderstorms. Highs in the lower 80s. Temperature falling into the mid 70s late. Northwest Winds around 15 Mph with Gusts up to 30 Mph. Chance of rain 40 percent.

Tonight 7 Jun Suffolk

Mostly cloudy with scattered Showers with isolated Thunderstorms in the Evening, then mostly clear after midnight. Cooler with Lows in the mid 50s. North Winds 10 to 15 Mph with Gusts up to 30 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

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Mystic River - Island End River Temperature Statistics

June Temperature

Boston, Logan International Airport (2.5 miles)

  • Lowest 1 June, 2026

    49.6 °F
  • Average June

    67.2 °F
  • Highest 4 June, 2026

    89.7 °F

Climate (2021–Present)

Boston, Logan International Airport (2.5 miles)

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  • Average Low 2021–2026

    46.7 °F
  • Average 2021–2026

    53.6 °F
  • Average High 2021–2026

    60.9 °F
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