Merriman Dam Weather Forecast

    • 14
    • 28

    Increasing Clouds

    • 17
    • 33

    Snow

    • 10
    • 23

    Partly Sunny

    • 13
    • 23

    Chance Snow

    • 16
    • 29

    Partly Sunny

    • 26
    • 39

    Mostly Cloudy

    • 28
    • 45

    Chance Rain

Today 12 Dec Western Ulster

Mostly sunny and cold. Near steady temperature in the mid 20s. West Winds around 10 Mph with Gusts up to 25 Mph.

Tonight 12 Dec Western Ulster

Mostly clear this Evening, then becoming partly cloudy. Cold with Lows around 13. West Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Merriman Dam Temperature Statistics

December Temperature

Monticello, Sullivan County International Airport (20.5 miles)

  • Lowest 5 December, 2025

    -2 °F

  • Average December

    23.4 °F

  • Highest 1 December, 2025

    35.1 °F

Climate (2020–Present)

Monticello, Sullivan County International Airport (20.5 miles)

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  • Average Low 2020–2025

    36.7 °F

  • Average 2020–2025

    45.9 °F

  • Average High 2020–2025

    55.2 °F
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