Ulster Heights Lake Weather Forecast

    • 43
    • 63

    Mostly Cloudy

    • 41
    • 64

    Becoming Sunny

    • 45
    • 66

    Mostly Sunny

    • 48
    • 68

    Slight Chance Rain Showers

    • 48
    • 64

    Chance Rain Showers

    • 49
    • 64

    Chance Rain Showers

    • 49
    • 66

    Partly Sunny

Today 22 Sep Western Ulster

Mostly cloudy. Near steady temperature around 60. East Winds around 5 Mph.

Tonight 22 Sep Western Ulster

Mostly cloudy. Lows in the lower 40s. East Winds around 5 Mph. Gusts up to 20 Mph after midnight.

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Ulster Heights Lake Temperature Statistics

September Temperature

Monticello, Sullivan County International Airport (16.8 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 (16.8 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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