Setauket Harbor Weather Forecast

    • 52
    • 71

    Sunny

    • 58
    • 70

    Partly Sunny

    • 57
    • 68

    Chance Rain Showers

    • 58
    • 68

    Rain Showers Likely

    • 60
    • 71

    Chance Rain Showers

    • 61
    • 75

    Chance Rain Showers

Today 11 May Northwest Suffolk

Sunny. Highs in the lower 70s. Northwest Winds 5 to 10 Mph. Gusts up to 20 Mph in the afternoon.

Tonight 11 May Northwest Suffolk

Mostly clear. Lows in the lower 50s. West Winds around 5 Mph.

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Setauket Harbor Temperature Statistics

May Temperature

Islip, Long Island Mac Arthur Airport (10.6 miles)

  • Lowest 1 May, 2025

    47.6 °F

  • Average May

    62.6 °F

  • Highest 2 May, 2025

    76.6 °F

Climate (2020–Present)

Islip, Long Island Mac Arthur Airport (10.6 miles)

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  • Average Low 2020–2025

    47.4 °F

  • Average 2020–2025

    55.1 °F

  • Average High 2020–2025

    63 °F
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