Long Beach (Stony Brook) Weather Forecast

    • 28
    • 49

    Rain

    • 27
    • 32

    Breezy

    • 24
    • 35

    Mostly Cloudy

    • 22
    • 30

    Slight Chance Snow

    • 25
    • 31

    Partly Sunny

    • 27
    • 36

    Chance Rain

Today 29 Dec Northwest Suffolk

Rain, breezy and not as cool with Highs in the lower 50s. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph, increasing to 20 to 25 Mph with Gusts up to 35 Mph this afternoon. Chance of rain near 100 percent.

Tonight 29 Dec Northwest Suffolk

Mostly clear in the Evening, then becoming mostly cloudy. Breezy with Lows in the mid 20s. West Winds 15 to 25 Mph with Gusts up to 40 Mph.

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  • Temperature Real-Time

Long Beach (Stony Brook) Temperature Statistics

December Temperature

Islip, Long Island Mac Arthur Airport (9.3 miles)

  • Lowest 15 December, 2025

    19.9 °F

  • Average December

    35.4 °F

  • Highest 19 December, 2025

    57.9 °F

Climate (2020–Present)

Islip, Long Island Mac Arthur Airport (9.3 miles)

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  • Average Low 2020–2025

    47.4 °F

  • Average 2020–2025

    55.3 °F

  • Average High 2020–2025

    63.1 °F
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