Harvard University Weather Forecast

    • 47
    • 65

    Increasing Clouds

    • 55
    • 63

    Rain Showers

    • 50
    • 67

    Mostly Cloudy

    • 50
    • 61

    Mostly Cloudy

    • 50
    • 63

    Mostly Cloudy

    • 50
    • 62

    Chance Rain Showers

Today 19 Sep Southeast Middlesex

Mostly sunny and much cooler. Near steady temperature in the lower 60s. East Winds around 5 Mph.

Tonight 19 Sep Southeast Middlesex

Partly cloudy. Lows in the mid 40s. Southeast Winds around 5 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Harvard University Temperature Statistics

September Temperature

Boston, Logan International Airport (5 miles)

  • Lowest 15 September, 2026

    53.7 °F

  • Average September

    69.1 °F

  • Highest 10 September, 2026

    87.7 °F

Climate (2021–2026)

Boston, Logan International Airport (5 miles)

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

  • Average Low 2021–2026

    46.6 °F

  • Average 2021–2026

    53.6 °F

  • Average High 2021–2026

    61 °F
Get WillyWeather+ to remove ads