South Setauket Weather Forecast

    • 43
    • 61

    Increasing Clouds

    • 34
    • 62

    Chance Rain Showers

    • 37
    • 52

    Sunny

    • 41
    • 57

    Mostly Sunny

    • 47
    • 58

    Mostly Cloudy

    • 53
    • 68

    Slight Chance Rain Showers

Today 23 Apr Northwest Suffolk

Sunny. Highs around 60. South Winds 10 to 15 Mph.

Tonight 23 Apr Northwest Suffolk

Mostly clear in the Evening, then becoming partly cloudy. Lows in the mid 40s. South Winds 10 to 15 Mph with Gusts up to 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

South Setauket Temperature Statistics

April Temperature

Islip, Long Island Mac Arthur Airport (6.2 miles)

  • Lowest 5 April, 2024

    35.7 °F

  • Average April

    50.4 °F

  • Highest 15 April, 2024

    78.7 °F

Climate (2019–Present)

Islip, Long Island Mac Arthur Airport (6.2 miles)

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  • Average Low 2019–2024

    47.3 °F

  • Average 2019–2024

    54.9 °F

  • Average High 2019–2024

    62.5 °F
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