South Mountain County Park Weather Forecast

    • 54
    • 70

    Mostly Cloudy

    • 58
    • 74

    Partly Sunny

    • 63
    • 78

    Partly Sunny

    • 59
    • 81

    Chance Rain Showers

    • 52
    • 69

    Chance Rain Showers

    • 52
    • 65

    Chance Rain Showers

Today 29 Sep Rockland

Patchy fog this morning. Partly sunny. Highs in the lower 70s. Northwest Winds around 5 Mph.

Tonight 29 Sep Rockland

Mostly cloudy in the Evening, then becoming partly cloudy. Lows in the mid 50s. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

South Mountain County Park Temperature Statistics

September Temperature

White Plains - Westchester County Airport (18.6 miles)

  • Lowest 24 September, 2026

    48.9 °F

  • Average September

    66.1 °F

  • Highest 10 September, 2026

    84 °F

Climate (2021–2026)

White Plains - Westchester County Airport (18.6 miles)

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  • Average Low 2021–2026

    45.8 °F

  • Average 2021–2026

    54 °F

  • Average High 2021–2026

    62.2 °F
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