Merriman Dam Weather Forecast

    • 42
    • 68

    Sunny

    • 51
    • 68

    Mostly Sunny

    • 59
    • 78

    Partly Sunny

    • 59
    • 77

    Chance Rain Showers

    • 53
    • 74

    Chance Rain Showers

    • 54
    • 69

    Chance Rain Showers

Today 14 Sep Western Ulster

Sunny. Less humid with Highs in the upper 60s. Northwest Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 14 Sep Western Ulster

Mostly cloudy. Lows in the lower 50s. Northwest Winds 5 to 10 Mph with Gusts up to 25 Mph.

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Merriman Dam Temperature Statistics

September Temperature

Monticello, Sullivan County International Airport (20.5 miles)

  • Lowest 7 September, 2026

    48 °F

  • Average September

    66 °F

  • Highest 3 September, 2026

    81 °F

Climate (2021–2026)

Monticello, Sullivan County International Airport (20.5 miles)

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  • Average Low 2021–2026

    36.5 °F

  • Average 2021–2026

    45.9 °F

  • Average High 2021–2026

    55.2 °F
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