Merriman Dam Weather Forecast

    • 20
    • 36

    Increasing Clouds

    • 14
    • 34

    Mostly Cloudy

    • 4
    • 23

    Partly Sunny

    • 20
    • 27

    Chance Rain/Snow

    • 25
    • 36

    Rain/Snow Likely

    • 20
    • 34

    Chance Rain/Snow

    • 14
    • 32

    Chance Snow

Today 6 Dec Western Ulster

Mostly sunny. Not as cool with Highs in the mid 30s. West Winds around 5 Mph.

Tonight 6 Dec Western Ulster

Mostly clear in the Evening, then becoming mostly cloudy. Cold with Lows around 19. Northwest Winds around 5 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 4 December, 2025

    10 °F

  • Average December

    26.4 °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

    36.8 °F

  • Average 2020–2025

    46 °F

  • Average High 2020–2025

    55.3 °F
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