Harvard Weather Forecast

    • 42
    • 63

    Decreasing Clouds

    • 40
    • 64

    Partly Sunny

    • 43
    • 64

    Partly Sunny

    • 46
    • 63

    Slight Chance Rain Showers

    • 45
    • 61

    Slight Chance Rain Showers

    • 46
    • 64

    Partly Sunny

Today 22 Sep Delaware

Partly sunny this Morning, then becoming mostly cloudy. Highs in the mid 60s. East Winds around 5 Mph.

Tonight 22 Sep Delaware

Mostly cloudy in the Evening, then becoming partly cloudy. Lows in the lower 40s. East Winds around 5 Mph.

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Harvard Temperature Statistics

September Temperature

Monticello, Sullivan County International Airport (27.3 miles)

  • Lowest 15 September, 2026

    42.1 °F

  • Average September

    64.2 °F

  • Highest 3 September, 2026

    81 °F

Climate (2021–2026)

Monticello, Sullivan County International Airport (27.3 miles)

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  • Average Low 2021–2026

    36.4 °F

  • Average 2021–2026

    45.9 °F

  • Average High 2021–2026

    55.2 °F
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