South Valley Stream Weather Forecast

    • 27
    • 33

    Snow

    • 21
    • 33

    Slight Chance Snow

    • 35
    • 41

    Rain

    • 28
    • 51

    Rain

    • 27
    • 34

    Mostly Cloudy

    • 25
    • 37

    Mostly Cloudy

    • 20
    • 33

    Partly Sunny

Today 26 Dec Southern Nassau

Snow likely. Snow accumulation around an inch. Highs in the lower 30s. East Winds 5 to 10 Mph. Chance of snow 70 percent.

Tonight 26 Dec Southern Nassau

Snow, freezing rain with a chance of sleet this Evening, then snow after midnight. Snow may be heavy at Times this evening. Total snow accumulation of 4 to 6 Inches. Ice accumulation around a trace. Lows in the upper 20s. East Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of precipitation near 100 percent.

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South Valley Stream Temperature Statistics

December Temperature

New York, Kennedy International Airport (2.5 miles)

  • Lowest 9 December, 2025

    19 °F

  • Average December

    34.6 °F

  • Highest 19 December, 2025

    55.9 °F

Climate (2020–Present)

New York, Kennedy International Airport (2.5 miles)

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  • Average Low 2020–2025

    49.5 °F

  • Average 2020–2025

    56.3 °F

  • Average High 2020–2025

    63.6 °F
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