Rondout Reservoir Weather Forecast

    • 42
    • 65

    Mostly Sunny

    • 36
    • 64

    Partly Sunny

    • 36
    • 61

    Mostly Sunny

    • 37
    • 63

    Mostly Sunny

    • 32
    • 57

    Mostly Sunny

    • 35
    • 60

    Mostly Sunny

Today 19 Oct Western Ulster

Sunny. Highs in the mid 60s. Light and variable Winds, becoming northeast around 5 Mph in the afternoon.

Tonight 19 Oct Western Ulster

Mostly clear. Lows in the lower 40s. North Winds around 5 Mph.

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Rondout Reservoir Temperature Statistics

October Temperature

Monticello, Sullivan County International Airport (18.6 miles)

  • Lowest 7 October, 2026

    30.9 °F

  • Average October

    55.1 °F

  • Highest 2 October, 2026

    79 °F

Climate (2021–2026)

Monticello, Sullivan County International Airport (18.6 miles)

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  • Average Low 2021–2026

    36.4 °F

  • Average 2021–2026

    45.8 °F

  • Average High 2021–2026

    55.1 °F
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