Mamaroneck Harbor Weather Forecast

    • 62
    • 71

    Chance Rain Showers

    • 64
    • 68

    Rain Showers Likely

    • 64
    • 76

    Partly Sunny

    • 57
    • 78

    Mostly Sunny

    • 57
    • 69

    Mostly Sunny

    • 59
    • 70

    Partly Sunny

    • 62
    • 74

    Partly Sunny

Today 16 Sep Southern Westchester

Mostly cloudy. Near steady temperature in the lower 70s. East Winds 10 to 15 Mph.

Tonight 16 Sep Southern Westchester

Mostly cloudy. A chance of Showers with a slight chance of Thunderstorms after midnight. Lows in the upper 50s. East Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mamaroneck Harbor Temperature Statistics

September Temperature

White Plains - Westchester County Airport (8.1 miles)

  • Lowest 8 September, 2025

    48.9 °F

  • Average September

    66.2 °F

  • Highest 6 September, 2025

    82 °F

Climate (2020–Present)

White Plains - Westchester County Airport (8.1 miles)

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  • Average Low 2020–2025

    45.9 °F

  • Average 2020–2025

    54.1 °F

  • Average High 2020–2025

    62.3 °F
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