South Valley Stream Weather Forecast

    • 31
    • 47

    Chance Rain/Snow

    • 33
    • 42

    Mostly Sunny

    • 39
    • 44

    Mostly Cloudy

    • 31
    • 46

    Mostly Cloudy

    • 23
    • 38

    Slight Chance Rain/Snow

    • 26
    • 34

    Partly Sunny

Today 11 Jan Southern Nassau

Mostly cloudy with a chance of rain this Morning, then mostly sunny with a chance of rain and snow Showers this afternoon. Highs in the mid 40s. West Winds 5 to 10 Mph with Gusts up to 20 Mph, increasing to 15 to 20 Mph with Gusts up to 35 Mph this afternoon. Chance of precipitation 40 percent.

Tonight 11 Jan Southern Nassau

Partly cloudy in the Evening, then becoming mostly clear. Breezy with Lows around 30. West Winds 15 to 25 Mph with Gusts up to 45 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

South Valley Stream Temperature Statistics

January Temperature

New York, Kennedy International Airport (2.5 miles)

  • Lowest 2 January, 2026

    21 °F

  • Average January

    33.4 °F

  • Highest 8 January, 2026

    51.1 °F

Climate (2021–Present)

New York, Kennedy International Airport (2.5 miles)

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  • Average Low 2021–2026

    49.5 °F

  • Average 2021–2026

    56.2 °F

  • Average High 2021–2026

    63.6 °F
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