Mystic River - Island End River Weather Forecast

    • 39
    • 56

    Mostly Sunny

    • 48
    • 66

    Rain Showers

    • 38
    • 58

    Mostly Sunny

    • 45
    • 58

    Slight Chance Rain Showers

    • 60
    • 70

    Slight Chance Rain Showers

    • 62
    • 81

    Slight Chance Rain Showers

Today 9 Apr Suffolk

Sunny. Not as cool with Highs in the mid 50s. South Winds 5 to 10 Mph, increasing to 15 to 20 Mph this afternoon.

Tonight 9 Apr Suffolk

Mostly clear. Lows in the upper 30s. South Winds 10 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mystic River - Island End River Temperature Statistics

April Temperature

Boston, Logan International Airport (2.5 miles)

  • Lowest 7 April, 2026

    35.1 °F

  • Average April

    47.7 °F

  • Highest 1 April, 2026

    71.7 °F

Climate (2021–Present)

Boston, Logan International Airport (2.5 miles)

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  • Average Low 2021–2026

    46.8 °F

  • Average 2021–2026

    53.6 °F

  • Average High 2021–2026

    61 °F
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