Harvard Weather Forecast

    • 50
    • 68

    Increasing Clouds

    • 60
    • 75

    Mostly Cloudy

    • 59
    • 76

    Rain Showers Likely

    • 47
    • 71

    Partly Sunny

    • 53
    • 66

    Rain Showers Likely

    • 53
    • 69

    Rain Showers

Today 15 Sep Delaware

Patchy fog this morning. Mostly sunny. Highs around 70. South Winds around 5 Mph.

Tonight 15 Sep Delaware

Mostly clear. Lows in the lower 50s. South Winds around 5 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Harvard Temperature Statistics

September Temperature

Monticello, Sullivan County International Airport (27.3 miles)

  • Lowest 7 September, 2026

    48 °F

  • Average September

    65.7 °F

  • Highest 3 September, 2026

    81 °F

Climate (2021–2026)

Monticello, Sullivan County International Airport (27.3 miles)

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

  • Average Low 2021–2026

    36.5 °F

  • Average 2021–2026

    45.9 °F

  • Average High 2021–2026

    55.2 °F
Get WillyWeather+ to remove ads