Mystic River - Island End River Weather Forecast

    • 68
    • 89

    Slight Chance Rain Showers

    • 67
    • 92

    Mostly Sunny

    • 65
    • 93

    Rain Showers

    • 60
    • 84

    Partly Sunny

    • 62
    • 81

    Partly Sunny

    • 63
    • 83

    Partly Sunny

    • 67
    • 86

    Chance Rain Showers

Today 12 Jun Suffolk

Partly sunny with a chance of Showers with a slight chance of Thunderstorms. Near steady temperature in the lower 80s. East Winds 5 to 10 Mph. Chance of rain 30 percent.

Tonight 12 Jun Suffolk

Partly cloudy with a 20 percent chance of Showers. Lows in the upper 60s. East Winds around 5 Mph, becoming northwest after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

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

    70 °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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