Long Beach (Stony Brook) Weather Forecast

    • 26
    • 33

    Increasing Clouds

    • 32
    • 45

    Partly Sunny

    • 46
    • 52

    Rain Showers

    • 28
    • 53

    Slight Chance Rain Showers

    • 35
    • 41

    Mostly Cloudy

    • 30
    • 45

    Mostly Cloudy

Today 16 Dec Northwest Suffolk

Mostly cloudy Early, then clearing. Highs in the lower 30s. West Winds 5 to 10 Mph. Gusts up to 20 Mph early.

Tonight 16 Dec Northwest Suffolk

Partly cloudy in the Evening, then clearing. Lows in the lower 20s. Southwest Winds 10 to 15 Mph.

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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

    34.7 °F

  • Highest 10 December, 2025

    50 °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

    55.2 °F

  • Average High 2020–2025

    63.1 °F
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