Long Beach (Stony Brook) Weather Forecast

    • 17
    • 30

    Decreasing Clouds

    • 33
    • 37

    Increasing Clouds

    • 34
    • 46

    Rain Likely

    • 27
    • 41

    Partly Sunny

    • 28
    • 37

    Chance Snow

    • 24
    • 38

    Mostly Cloudy

    • 21
    • 33

    Partly Sunny

Today 8 Dec Northwest Suffolk

Partly sunny. Cold with Highs in the upper 20s. North Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 8 Dec Northwest Suffolk

Mostly cloudy this Evening, then becoming partly cloudy. Lows around 16. North Winds 10 to 15 Mph with Gusts up to 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Long Beach (Stony Brook) Temperature Statistics

December Temperature

Islip, Long Island Mac Arthur Airport (9.3 miles)

  • Lowest 5 December, 2025

    21 °F

  • Average December

    36.1 °F

  • Highest 1 December, 2025

    46 °F

Climate (2020–Present)

Islip, Long Island Mac Arthur Airport (9.3 miles)

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  • Average Low 2020–2025

    47.5 °F

  • Average 2020–2025

    55.3 °F

  • Average High 2020–2025

    63.1 °F
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