Mamaroneck Weather Forecast

    • 63
    • 67

    Rain Showers Likely

    • 65
    • 75

    Slight Chance Rain Showers

    • 57
    • 77

    Mostly Sunny

    • 57
    • 68

    Mostly Sunny

    • 59
    • 69

    Partly Sunny

    • 62
    • 73

    Partly Sunny

Today 17 Sep Southern Westchester

Mostly cloudy. A chance of Showers with a slight chance of Thunderstorms in the Morning, then Showers likely with a chance of Thunderstorms in the afternoon. Highs around 70. Northeast Winds 10 to 15 Mph. Chance of rain 60 percent.

Tonight 17 Sep Southern Westchester

Mostly cloudy. A chance of Showers with a slight chance of Thunderstorms in the Evening, then a chance of Showers after midnight. Lows in the lower 60s. Northeast Winds 5 to 10 Mph. Gusts up to 20 Mph in the evening. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mamaroneck Temperature Statistics

September Temperature

White Plains - Westchester County Airport (7.5 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 (7.5 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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