South Setauket Weather Forecast

    • 68
    • 88

    Mostly Sunny

    • 66
    • 89

    Rain Showers Likely

    • 62
    • 83

    Partly Sunny

    • 64
    • 80

    Partly Sunny

    • 66
    • 79

    Partly Sunny

    • 69
    • 84

    Chance Rain Showers

Today 13 Jun Northwest Suffolk

Sunny. Highs in the upper 80s. Northwest Winds 5 to 10 Mph.

Tonight 13 Jun Northwest Suffolk

Mostly clear. Lows in the upper 60s. Southwest Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

South Setauket Temperature Statistics

June Temperature

Islip, Long Island Mac Arthur Airport (6.2 miles)

  • Lowest 2 June, 2026

    46.7 °F

  • Average June

    67.8 °F

  • Highest 5 June, 2026

    88.6 °F

Climate (2021–Present)

Islip, Long Island Mac Arthur Airport (6.2 miles)

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  • Average Low 2021–2026

    47.2 °F

  • Average 2021–2026

    55.1 °F

  • Average High 2021–2026

    63 °F
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