Mystic River - Island End River Weather Forecast

    • 63
    • 78

    Mostly Cloudy

    • 65
    • 80

    Decreasing Clouds

    • 70
    • 91

    Rain Showers Likely

    • 74
    • 94

    Partly Sunny

    • 76
    • 99

    Hot

    • 73
    • 98

    Slight Chance Thunderstorms

    • 69
    • 90

    Chance Rain Showers

Today 28 Jun Suffolk

Partly sunny with isolated Showers. Near steady temperature in the upper 70s. East Winds 5 to 10 Mph. Chance of rain 20 percent.

Tonight 28 Jun Suffolk

Partly cloudy this Evening, then becoming mostly cloudy. Patchy fog after midnight. Lows in the lower 60s. South Winds around 5 Mph, becoming west around 5 Mph 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

    72.5 °F

  • Highest 14 June, 2026

    91.7 °F

Climate (2021–2026)

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

    61 °F
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