Rondout Reservoir Weather Forecast

    • 47
    • 69

    Mostly Cloudy

    • 46
    • 67

    Rain Showers

    • 48
    • 69

    Partly Sunny

    • 50
    • 75

    Mostly Sunny

    • 55
    • 80

    Mostly Sunny

    • 60
    • 85

    Partly Sunny

Today 31 May Western Ulster

Partly sunny. Warmer with Highs in the upper 60s. Northwest Winds 5 to 10 Mph.

Tonight 31 May Western Ulster

Mostly cloudy. Not as cool with Lows in the upper 40s. Northwest Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Rondout Reservoir Temperature Statistics

May Temperature

Monticello, Sullivan County International Airport (18.6 miles)

  • Lowest 4 May, 2026

    30.9 °F

  • Average May

    56.4 °F

  • Highest 18 May, 2026

    90 °F

Climate (2021–Present)

Monticello, Sullivan County International Airport (18.6 miles)

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  • Average Low 2021–2026

    36.5 °F

  • Average 2021–2026

    45.7 °F

  • Average High 2021–2026

    55 °F
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