Mystic River - Island End River Weather Forecast

    • 48
    • 59

    Rain Showers

    • 49
    • 53

    Rain Showers Likely

    • 57
    • 77

    Mostly Sunny

    • 54
    • 78

    Slight Chance Rain Showers

    • 55
    • 71

    Partly Sunny

    • 60
    • 81

    Partly Sunny

Today 14 May Suffolk

Cloudy. A slight chance of Showers, then Showers. Locally heavy rainfall possible. Highs in the upper 50s. Southeast Winds 10 to 15 Mph. Chance of rain 90 percent.

Tonight 14 May Suffolk

Showers. Lows in the upper 40s. Northeast Winds 5 to 10 Mph. Chance of rain near 100 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mystic River - Island End River Temperature Statistics

May Temperature

Boston, Logan International Airport (2.5 miles)

  • Lowest 9 May, 2026

    42.7 °F

  • Average May

    57 °F

  • Highest 5 May, 2026

    79.6 °F

Climate (2021–Present)

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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