Harvard University Weather Forecast

    • 55
    • 73

    Partly Sunny

    • 59
    • 73

    Slight Chance Rain Showers

    • 61
    • 80

    Slight Chance Rain Showers

    • 52
    • 80

    Mostly Sunny

    • 49
    • 68

    Mostly Sunny

    • 53
    • 74

    Mostly Sunny

Today 16 Sep Southeast Middlesex

Partly sunny. Patchy fog this morning. Visibility one quarter mile or less at Times this morning. Highs in the mid 70s. East Winds 5 to 10 Mph.

Tonight 16 Sep Southeast Middlesex

Partly cloudy in the Evening, then becoming mostly cloudy. Patchy fog after midnight. Lows in the mid 50s. East Winds around 5 Mph in the Evening, becoming light and variable.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Harvard University Temperature Statistics

September Temperature

Boston, Logan International Airport (5 miles)

  • Lowest 9 September, 2025

    54 °F

  • Average September

    65.7 °F

  • Highest 6 September, 2025

    86 °F

Climate (2020–Present)

Boston, Logan International Airport (5 miles)

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

  • Average Low 2020–2025

    46.9 °F

  • Average 2020–2025

    53.8 °F

  • Average High 2020–2025

    61.1 °F
Get WillyWeather+ to remove ads