South Valley Stream Weather Forecast

    • 33
    • 42

    Partly Sunny

    • 40
    • 45

    Partly Sunny

    • 37
    • 47

    Chance Rain

    • 24
    • 42

    Chance Rain/Snow

    • 27
    • 35

    Partly Sunny

    • 29
    • 39

    Mostly Cloudy

Today 12 Jan Southern Nassau

Sunny. Highs in the lower 40s. West Winds 15 to 20 Mph. Gusts up to 35 Mph this morning.

Tonight 12 Jan Southern Nassau

Mostly clear. Lows in the lower 30s. West Winds 10 to 15 Mph with Gusts up to 25 Mph.

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South Valley Stream Temperature Statistics

January Temperature

New York, Kennedy International Airport (2.5 miles)

  • Lowest 2 January, 2026

    21 °F

  • Average January

    34.5 °F

  • Highest 9 January, 2026

    53.1 °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

    56.3 °F

  • Average High 2021–2026

    63.6 °F
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