Rondout Reservoir Weather Forecast

    • 42
    • 69

    Increasing Clouds

    • 30
    • 44

    Rain Showers

    • 24
    • 44

    Partly Sunny

    • 36
    • 52

    Partly Sunny

    • 36
    • 61

    Mostly Sunny

    • 41
    • 63

    Partly Sunny

Today 18 Apr Western Ulster

Mostly sunny. Highs in the upper 60s. Southeast Winds 5 to 10 Mph.

Tonight 18 Apr Western Ulster

Mostly cloudy. Showers after midnight. Cooler with Lows in the upper 30s. South Winds 5 to 10 Mph. Chance of rain 80 percent.

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Rondout Reservoir Temperature Statistics

April Temperature

Monticello, Sullivan County International Airport (18.6 miles)

  • Lowest 8 April, 2026

    18 °F

  • Average April

    46.2 °F

  • Highest 15 April, 2026

    81 °F

Climate (2021–Present)

Monticello, Sullivan County International Airport (18.6 miles)

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  • Average Low 2021–2026

    36.4 °F

  • Average 2021–2026

    45.7 °F

  • Average High 2021–2026

    55 °F
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