Harvard University Weather Forecast

    • 58
    • 72

    Chance Rain Showers

    • 54
    • 70

    Mostly Sunny

    • 61
    • 78

    Partly Sunny

    • 62
    • 79

    Partly Sunny

    • 69
    • 79

    Chance Rain Showers

    • 60
    • 82

    Chance Rain Showers

Today 5 Sep Southeast Middlesex

Cloudy with isolated Showers. Cooler. Near steady temperature around 70. Northeast Winds 5 to 10 Mph. Chance of rain 20 percent.

Tonight 5 Sep Southeast Middlesex

Mostly cloudy. Lows in the upper 50s. North Winds around 5 Mph.

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Harvard University Temperature Statistics

September Temperature

Boston, Logan International Airport (5 miles)

  • Lowest 3 September, 2026

    63 °F

  • Average September

    67.5 °F

  • Highest 2 September, 2026

    72.6 °F

Climate (2021–2026)

Boston, Logan International Airport (5 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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