Cold Spring Harbor Weather Forecast

    • 63
    • 81

    Chance Rain Showers

    • 58
    • 74

    Mostly Sunny

    • 60
    • 77

    Mostly Sunny

    • 63
    • 80

    Mostly Cloudy

    • 68
    • 79

    Chance Rain Showers

    • 62
    • 84

    Partly Sunny

Today 5 Sep Northwest Suffolk

Sunny. Highs around 80. North Winds 5 to 10 Mph.

Tonight 5 Sep Northwest Suffolk

Mostly cloudy. A slight chance of Showers and Thunderstorms in the Evening, then a chance of Showers after midnight. Lows in the lower 60s. Northeast Winds 5 to 10 Mph. Chance of rain 50 percent.

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  • Temperature Real-Time

Cold Spring Harbor Temperature Statistics

September Temperature

Farmingdale - Republic Airport (9.9 miles)

  • Lowest 2 September, 2026

    64.9 °F

  • Average September

    71 °F

  • Highest 1 September, 2026

    78.1 °F

Climate (2021–2026)

Farmingdale - Republic Airport (9.9 miles)

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  • Average Low 2021–2026

    48.1 °F

  • Average 2021–2026

    55.7 °F

  • Average High 2021–2026

    63 °F
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