Boston Harbor - Chelsea Weather Forecast

    • 66
    • 81

    Rain Showers

    • 67
    • 77

    Thunderstorms

    • 62
    • 78

    Chance Rain Showers

    • 64
    • 81

    Mostly Sunny

    • 68
    • 88

    Partly Sunny

    • 70
    • 93

    Slight Chance Thunderstorms

Today 25 Jun Suffolk

Mostly sunny. Near steady temperature in the lower 80s. South Winds 5 to 10 Mph.

Tonight 25 Jun Suffolk

Mostly cloudy. A chance of Showers after midnight. Lows in the mid 60s. South Winds 5 to 10 Mph. Chance of rain 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Boston Harbor - Chelsea Temperature Statistics

June Temperature

Boston, Logan International Airport (1.9 miles)

  • Lowest 1 June, 2026

    49.6 °F

  • Average June

    72.4 °F

  • Highest 14 June, 2026

    91.7 °F

Climate (2021–2026)

Boston, Logan International Airport (1.9 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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