Harvard Weather Forecast

    • 61
    • 84

    Partly Sunny

    • 65
    • 84

    Slight Chance Thunderstorms

    • 68
    • 91

    Chance Thunderstorms

    • 68
    • 92

    Mostly Sunny

    • 66
    • 91

    Slight Chance Thunderstorms

    • 64
    • 88

    Chance Thunderstorms

Today 29 Jun Delaware

Mostly sunny. Highs in the mid 80s. Light and variable Winds, becoming northeast around 5 Mph this afternoon.

Tonight 29 Jun Delaware

Mostly clear. Lows in the lower 60s. Southeast Winds around 5 Mph.

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Harvard Temperature Statistics

June Temperature

Monticello, Sullivan County International Airport (27.3 miles)

  • Lowest 2 June, 2026

    41 °F

  • Average June

    66.1 °F

  • Highest 11 June, 2026

    91 °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

    45.8 °F

  • Average High 2021–2026

    55 °F
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