Mystic River - Island End River Weather Forecast

    • 64
    • 82

    Slight Chance Rain Showers

    • 61
    • 74

    Rain Showers

    • 60
    • 72

    Rain Showers

    • 64
    • 79

    Partly Sunny

    • 70
    • 88

    Partly Sunny

    • 69
    • 89

    Chance Thunderstorms

    • 66
    • 83

    Slight Chance Thunderstorms

Today 5 Jul Suffolk

Partly sunny and not as warm. Near steady temperature in the upper 70s. East Winds 5 to 10 Mph.

Tonight 5 Jul Suffolk

Mostly cloudy. A slight chance of Showers after midnight. Lows in the mid 60s. Southeast Winds 5 to 10 Mph. Chance of rain 20 percent.

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  • Temperature Real-Time

Mystic River - Island End River Temperature Statistics

July Temperature

Boston, Logan International Airport (2.5 miles)

  • Lowest 1 July, 2026

    71.7 °F

  • Average July

    87.7 °F

  • Highest 2 July, 2026

    101.6 °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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