South Valley Stream Weather Forecast

    • 64
    • 80

    Chance Rain Showers

    • 61
    • 74

    Chance Rain Showers

    • 62
    • 79

    Mostly Sunny

    • 67
    • 81

    Partly Sunny

    • 72
    • 82

    Partly Sunny

    • 65
    • 86

    Partly Sunny

    • 62
    • 77

    Mostly Sunny

Today 5 Sep Southern Nassau

Sunny. Highs in the lower 80s. North Winds 5 to 10 Mph.

Tonight 5 Sep Southern Nassau

Partly cloudy with a slight chance of Showers this Evening, then mostly cloudy with a chance of Showers after midnight. Lows in the lower 60s. Northeast Winds 5 to 10 Mph. Chance of rain 40 percent.

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  • Temperature Real-Time

South Valley Stream Temperature Statistics

September Temperature

New York, Kennedy International Airport (2.5 miles)

  • Lowest 2 September, 2026

    66.7 °F

  • Average September

    73.8 °F

  • Highest 3 September, 2026

    86 °F

Climate (2021–2026)

New York, Kennedy International Airport (2.5 miles)

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  • Average Low 2021–2026

    49.3 °F

  • Average 2021–2026

    56.3 °F

  • Average High 2021–2026

    63.6 °F
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