Harriman State Park Weather Forecast

    • 61
    • 76

    Rain Showers

    • 59
    • 75

    Rain Showers

    • 49
    • 70

    Mostly Sunny

    • 54
    • 69

    Mostly Sunny

    • 59
    • 75

    Partly Sunny

    • 57
    • 77

    Chance Rain Showers

Today 12 Sep Rockland

Mostly sunny. Highs in the upper 70s. Northeast Winds around 5 Mph, becoming south this afternoon.

Tonight 12 Sep Rockland

Mostly cloudy. Showers with a chance of Thunderstorms after midnight. Lows in the mid 60s. Southeast Winds 5 to 10 Mph. Chance of rain 90 percent.

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Harriman State Park Temperature Statistics

September Temperature

Newburgh / Stewart (18.6 miles)

  • Lowest 7 September, 2026

    51.8 °F

  • Average September

    68.7 °F

  • Highest 4 September, 2026

    82.4 °F

Climate (2021–2026)

Newburgh / Stewart (18.6 miles)

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  • Average Low 2021–2026

    43.5 °F

  • Average 2021–2026

    52.5 °F

  • Average High 2021–2026

    61.4 °F
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