Centereach Weather Forecast

    • 39
    • 52

    Cloudy

    • 20
    • 42

    Slight Chance Rain/Snow

    • 28
    • 36

    Partly Sunny

    • 26
    • 41

    Mostly Cloudy

    • 20
    • 33

    Partly Sunny

    • 19
    • 32

    Partly Sunny

Today 14 Jan Northwest Suffolk

Cloudy with a 20 percent chance of Showers. Highs in the upper 40s. Southwest Winds 5 to 10 Mph.

Tonight 14 Jan Northwest Suffolk

Cloudy with a 50 percent chance of Showers. Lows in the mid 30s. Southwest Winds 5 to 10 Mph.

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Centereach Temperature Statistics

January Temperature

Islip, Long Island Mac Arthur Airport (4.3 miles)

  • Lowest 1 January, 2026

    21 °F

  • Average January

    36.2 °F

  • Highest 9 January, 2026

    51.1 °F

Climate (2021–Present)

Islip, Long Island Mac Arthur Airport (4.3 miles)

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  • Average Low 2021–2026

    47.4 °F

  • Average 2021–2026

    55.3 °F

  • Average High 2021–2026

    63.1 °F
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