Mystic River - Island End River Weather Forecast

    • 68
    • 75

    Rain Showers Likely

    • 65
    • 79

    Partly Sunny

    • 68
    • 85

    Chance Rain Showers

    • 62
    • 81

    Chance Rain Showers

    • 62
    • 78

    Slight Chance Rain Showers

    • 64
    • 79

    Slight Chance Rain Showers

Today 17 Aug Suffolk

Cloudy. Showers Likely, mainly in the morning. Patchy fog. Humid with Highs in the upper 70s. South Winds 5 to 10 Mph. Chance of rain 60 percent.

Tonight 17 Aug Suffolk

Mostly cloudy. Patchy fog. Humid with Lows in the upper 60s. East Winds around 5 Mph, becoming north after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

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

    79.5 °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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