Sylvan Lake Weather Forecast

    • 55
    • 81

    Becoming Sunny

    • 47
    • 80

    Mostly Sunny

    • 45
    • 71

    Mostly Sunny

    • 47
    • 72

    Partly Sunny

    • 58
    • 77

    Partly Sunny

    • 60
    • 83

    Slight Chance Rain Showers

Today 18 Sep Eastern Dutchess

Sunny. Near steady temperature in the upper 70s. Northwest Winds around 5 Mph.

Tonight 18 Sep Eastern Dutchess

Clear. Patchy fog after midnight. Lows in the mid 50s. Northwest Winds around 5 Mph in the Evening, becoming light and variable.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sylvan Lake Temperature Statistics

September Temperature

Poughkeepsie, Dutchess County Airport (7.5 miles)

  • Lowest 8 September, 2025

    44.1 °F

  • Average September

    64.2 °F

  • Highest 5 September, 2025

    81 °F

Climate (2020–Present)

Poughkeepsie, Dutchess County Airport (7.5 miles)

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  • Average Low 2020–2025

    42.5 °F

  • Average 2020–2025

    52.8 °F

  • Average High 2020–2025

    63.2 °F
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