Mystic River - Island End River Weather Forecast

    • 65
    • 76

    Rain Showers Likely

    • 62
    • 74

    Rain Showers Likely

    • 65
    • 73

    Rain Showers Likely

    • 64
    • 77

    Chance Rain Showers

    • 62
    • 75

    Slight Chance Rain Showers

    • 60
    • 73

    Slight Chance Rain Showers

Today 31 Aug Suffolk

Mostly sunny. Highs in the mid 70s. North Winds 5 to 10 Mph, becoming east in the afternoon.

Tonight 31 Aug Suffolk

Mostly cloudy. Showers likely after midnight. Lows in the mid 60s. South Winds 5 to 10 Mph. Chance of rain 70 percent.

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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 16 August, 2026

    62.7 °F

  • Average August

    76.3 °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

    53.6 °F

  • Average High 2021–2026

    61 °F
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