Mystic River - Island End River Weather Forecast

    • 61
    • 80

    Becoming Sunny

    • 66
    • 82

    Rain Showers

    • 65
    • 78

    Rain Showers Likely

    • 65
    • 81

    Mostly Sunny

    • 69
    • 85

    Slight Chance Rain Showers

    • 64
    • 85

    Chance Rain Showers

Today 15 Aug Suffolk

Sunny. Highs around 80. North Winds 5 to 10 Mph, becoming northeast this afternoon.

Tonight 15 Aug Suffolk

Partly cloudy in the Evening, then becoming clear. Lows around 60. South Winds around 5 Mph, becoming northwest around 5 Mph after midnight.

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Mystic River - Island End River Temperature Statistics

August Temperature

Boston, Logan International Airport (2.5 miles)

  • Lowest 4 August, 2026

    66.7 °F

  • Average August

    79.6 °F

  • Highest 7 August, 2026

    94.6 °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

    53.7 °F

  • Average High 2021–2026

    61 °F
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