South Valley Stream Weather Forecast

    • 31
    • 34

    Chance Wintry Mix

    • 31
    • 42

    Mostly Cloudy

    • 28
    • 41

    Mostly Cloudy

    • 21
    • 34

    Mostly Sunny

    • 33
    • 38

    Mostly Cloudy

    • 37
    • 47

    Rain Likely

    • 31
    • 44

    Chance Rain

Today 5 Dec Southern Nassau

Mostly cloudy with a 20 percent chance of light snow. Highs in the mid 30s. East Winds around 5 Mph.

Tonight 5 Dec Southern Nassau

Cloudy. A chance of light Snow, drizzle and freezing drizzle in the Evening, then a chance of very light drizzle and freezing drizzle after midnight. Lows in the lower 30s. Northeast Winds around 5 Mph. Chance of precipitation 30 percent.

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  • Temperature Forecast NOAA

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South Valley Stream Temperature Statistics

December Temperature

New York, Kennedy International Airport (2.5 miles)

  • Lowest 2 December, 2025

    30.9 °F

  • Average December

    37.8 °F

  • Highest 2 December, 2025

    45 °F

Climate (2020–Present)

New York, Kennedy International Airport (2.5 miles)

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  • Average Low 2020–2025

    49.6 °F

  • Average 2020–2025

    56.3 °F

  • Average High 2020–2025

    63.6 °F
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