Charlestown Weather Forecast

    • 41
    • 52

    Slight Chance Rain Showers

    • 44
    • 64

    Rain

    • 25
    • 50

    Chance Rain

    • 27
    • 39

    Partly Sunny

    • 33
    • 47

    Partly Sunny

    • 42
    • 55

    Slight Chance Rain

Today 25 Mar Suffolk

Mostly sunny. Near steady temperature in the lower 50s. Southwest Winds 5 to 10 Mph.

Tonight 25 Mar Suffolk

Mostly cloudy. A chance of rain after midnight. Lows in the lower 40s. South Winds 5 to 10 Mph with Gusts up to 25 Mph. Chance of rain 30 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Charlestown Temperature Statistics

March Temperature

Boston, Logan International Airport (2.5 miles)

  • Lowest 2 March, 2026

    12.7 °F

  • Average March

    40.9 °F

  • Highest 10 March, 2026

    75.7 °F

Climate (2021–Present)

Boston, Logan International Airport (2.5 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