Rondout Reservoir Weather Forecast

    • 35
    • 44

    Rain Showers

    • 37
    • 55

    Slight Chance Rain Showers

    • 38
    • 62

    Mostly Sunny

    • 43
    • 62

    Mostly Cloudy

    • 44
    • 57

    Rain Showers Likely

    • 38
    • 59

    Chance Rain Showers

Today 25 Apr Western Ulster

Cloudy. A chance of rain in the Morning, then rain in the afternoon. Much cooler. Near steady temperature in the upper 30s. Southeast Winds 5 to 10 Mph. Chance of rain 80 percent.

Tonight 25 Apr Western Ulster

Mostly cloudy and cooler. Near steady temperature in the upper 30s. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Rondout Reservoir Temperature Statistics

April Temperature

Monticello, Sullivan County International Airport (18.6 miles)

  • Lowest 8 April, 2026

    18 °F

  • Average April

    49 °F

  • Highest 16 April, 2026

    82.9 °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

    45.8 °F

  • Average High 2021–2026

    55.1 °F
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