Green Mountain Lake Weather Forecast

    • 64
    • 78

    Chance Rain Showers

    • 49
    • 76

    Mostly Sunny

    • 54
    • 70

    Rain Showers

    • 52
    • 65

    Rain Showers

    • 49
    • 67

    Chance Rain Showers

    • 48
    • 65

    Chance Rain Showers

Today 17 Sep Eastern Dutchess

Partly sunny this Morning, then mostly cloudy with a chance of Showers this afternoon. Highs in the upper 70s. South Winds around 5 Mph. Chance of rain 40 percent.

Tonight 17 Sep Eastern Dutchess

Mostly cloudy. A chance of Showers in the evening. Patchy fog after midnight. Humid with Lows in the lower 60s. South Winds around 5 Mph, becoming northwest after midnight. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Green Mountain Lake Temperature Statistics

September Temperature

Poughkeepsie, Dutchess County Airport (14.9 miles)

  • Lowest 15 September, 2026

    45 °F

  • Average September

    68.4 °F

  • Highest 10 September, 2026

    87.7 °F

Climate (2021–2026)

Poughkeepsie, Dutchess County Airport (14.9 miles)

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  • Average Low 2021–2026

    42 °F

  • Average 2021–2026

    52.6 °F

  • Average High 2021–2026

    63.1 °F
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