Castle Island Weather Forecast

    • 43
    • 47

    Chance Rain

    • 39
    • 61

    Chance Rain

    • 44
    • 57

    Mostly Sunny

    • 43
    • 63

    Partly Sunny

    • 42
    • 55

    Chance Rain

    • 28
    • 50

    Chance Rain

Today 7 Mar Suffolk

Mostly cloudy. Areas of drizzle this morning. Patchy fog this morning. Visibility one quarter mile or less at Times this morning. Not as cool with Highs in the upper 40s. South Winds 5 to 10 Mph. Gusts up to 25 Mph this afternoon.

Tonight 7 Mar Suffolk

Mostly cloudy with a 50 percent chance of rain. Patchy fog. Lows in the lower 40s. Temperature rising into the lower 50s after midnight. Southwest Winds around 10 Mph with Gusts up to 30 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Castle Island Temperature Statistics

March Temperature

Boston, Logan International Airport (1.2 miles)

  • Lowest 2 March, 2026

    12.9 °F

  • Average March

    29.8 °F

  • Highest 4 March, 2026

    50 °F

Climate (2021–Present)

Boston, Logan International Airport (1.2 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    46.8 °F

  • Average 2021–2026

    53.7 °F

  • Average High 2021–2026

    61 °F
Get WillyWeather+ to remove ads