Mongaup Valley Weather Forecast

    • 38
    • 49

    Rain Showers

    • 26
    • 46

    Chance Snow Showers

    • 26
    • 38

    Mostly Cloudy

    • 24
    • 41

    Mostly Cloudy

    • 25
    • 45

    Mostly Cloudy

    • 31
    • 46

    Chance Rain Showers

Today 15 Nov Sullivan

Partly sunny this Morning, then mostly cloudy with a chance of rain Showers this afternoon. Highs in the lower 50s. West Winds around 5 Mph, becoming south around 5 Mph this afternoon. Chance of rain 50 percent.

Tonight 15 Nov Sullivan

Rain Showers with a slight chance of Thunderstorms in the Evening, then a chance of rain Showers after midnight. Lows in the upper 30s. South Winds 5 to 10 Mph, becoming west 10 to 15 Mph with Gusts up to 25 Mph after midnight. Chance of rain near 100 percent.

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Mongaup Valley Temperature Statistics

November Temperature

Monticello, Sullivan County International Airport (1.9 miles)

  • Lowest 7 November, 2025

    24.1 °F

  • Average November

    40.2 °F

  • Highest 5 November, 2025

    57.9 °F

Climate (2020–Present)

Monticello, Sullivan County International Airport (1.9 miles)

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  • Average Low 2020–2025

    36.8 °F

  • Average 2020–2025

    46.1 °F

  • Average High 2020–2025

    55.4 °F
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