Long Island South Weather Forecast

    • 67
    • 77

    Becoming Sunny

    • 61
    • 79

    Mostly Sunny

    • 60
    • 68

    Mostly Sunny

    • 60
    • 68

    Partly Sunny

    • 65
    • 72

    Partly Sunny

    • 68
    • 78

    Partly Sunny

Today 18 Sep Southern Westchester

Partly sunny this Morning, then clearing. Patchy fog this morning. Highs in the lower 80s. Northwest Winds around 5 Mph.

Tonight 18 Sep Southern Westchester

Clear. Lows in the lower 60s. West Winds around 5 Mph.

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Long Island South Temperature Statistics

September Temperature

White Plains - Westchester County Airport (10.6 miles)

  • Lowest 8 September, 2025

    48.9 °F

  • Average September

    66.4 °F

  • Highest 6 September, 2025

    82 °F

Climate (2020–Present)

White Plains - Westchester County Airport (10.6 miles)

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  • Average Low 2020–2025

    45.9 °F

  • Average 2020–2025

    54.1 °F

  • Average High 2020–2025

    62.4 °F
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