Chappaqua Weather Forecast

    • 66
    • 89

    Mostly Sunny

    • 68
    • 90

    Slight Chance Thunderstorms

    • 64
    • 86

    Chance Thunderstorms

    • 65
    • 84

    Chance Rain Showers

    • 63
    • 84

    Slight Chance Thunderstorms

    • 58
    • 81

    Partly Sunny

Today 9 Aug Northern Westchester

Sunny. A slight chance of Showers and Thunderstorms this afternoon. Highs in the upper 80s. West Winds 5 to 10 Mph. Chance of rain 20 percent.

Tonight 9 Aug Northern Westchester

Mostly clear. Lows in the mid 60s. North Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Chappaqua Temperature Statistics

August Temperature

White Plains - Westchester County Airport (7.5 miles)

  • Lowest 4 August, 2026

    61 °F

  • Average August

    75.5 °F

  • Highest 6 August, 2026

    88 °F

Climate (2021–2026)

White Plains - Westchester County Airport (7.5 miles)

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  • Average Low 2021–2026

    45.8 °F

  • Average 2021–2026

    54.1 °F

  • Average High 2021–2026

    62.3 °F
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