Rondout Reservoir Weather Forecast

    • 50
    • 59

    Rain Likely

    • 50
    • 68

    Partly Sunny

    • 54
    • 73

    Partly Sunny

    • 58
    • 76

    Partly Sunny

    • 50
    • 74

    Slight Chance Rain Showers

    • 47
    • 67

    Partly Sunny

Today 28 Sep Western Ulster

Rain likely. Highs in the upper 50s. Northeast Winds 5 to 10 Mph. Gusts up to 25 Mph in the morning. Chance of rain 70 percent.

Tonight 28 Sep Western Ulster

Mostly cloudy in the Evening, then becoming partly cloudy. Lows in the upper 40s. North Winds around 5 Mph in the Evening, becoming light and variable.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Rondout Reservoir Temperature Statistics

September Temperature

Monticello, Sullivan County International Airport (18.6 miles)

  • Lowest 24 September, 2026

    39.9 °F

  • Average September

    62.4 °F

  • Highest 3 September, 2026

    81 °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

    45.9 °F

  • Average High 2021–2026

    55.1 °F
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