National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

White Plains - Westchester County Airport (KHPN)

Lat: 41.06°NLon: 73.7°WElev: 367ft.

Mostly Cloudy

77°F

25°C

Humidity 74%
Wind Speed S 12 G 17 mph
Barometer 30.12 in (1019.4 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 17 Sep 3:56 pm EDT
Extended Forecast for

Chappaqua NY

  • This Afternoon

    This Afternoon: Isolated showers, with thunderstorms also possible after 5pm. Partly sunny, with a high near 78. South wind around 7 mph. Chance of precipitation is 20%.

    High: 78 °F

    Isolated
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms before midnight, then a slight chance of showers between midnight and 2am. Cloudy, then gradually becoming partly cloudy, with a low around 65. Light and variable wind. Chance of precipitation is 40%.

    Low: 65 °F

    Chance
    Showers

  • Friday

    Friday: Sunny, with a high near 78. North wind 6 to 9 mph.

    High: 78 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 51. North wind around 6 mph.

    Low: 51 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 69. Northeast wind around 6 mph becoming light and variable in the afternoon.

    High: 69 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of showers after 2am. Increasing clouds, with a low around 55.

    Low: 55 °F

    Mostly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: Showers, mainly after 10am. High near 66. Chance of precipitation is 80%.

    High: 66 °F

    Showers

  • Sunday Night

    Sunday Night: Showers likely, mainly before 2am. Cloudy, with a low around 56. Chance of precipitation is 60%.

    Low: 56 °F

    Showers
    Likely

  • Monday

    Monday: A 40 percent chance of showers before 2pm. Mostly cloudy, with a high near 66.

    High: 66 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
Isolated showers, with thunderstorms also possible after 5pm. Partly sunny, with a high near 78. South wind around 7 mph. Chance of precipitation is 20%.
Tonight
A chance of showers and thunderstorms before midnight, then a slight chance of showers between midnight and 2am. Cloudy, then gradually becoming partly cloudy, with a low around 65. Light and variable wind. Chance of precipitation is 40%.
Friday
Sunny, with a high near 78. North wind 6 to 9 mph.
Friday Night
Partly cloudy, with a low around 51. North wind around 6 mph.
Saturday
Mostly sunny, with a high near 69. Northeast wind around 6 mph becoming light and variable in the afternoon.
Saturday Night
A 30 percent chance of showers after 2am. Increasing clouds, with a low around 55.
Sunday
Showers, mainly after 10am. High near 66. Chance of precipitation is 80%.
Sunday Night
Showers likely, mainly before 2am. Cloudy, with a low around 56. Chance of precipitation is 60%.
Monday
A 40 percent chance of showers before 2pm. Mostly cloudy, with a high near 66.
Monday Night
A 40 percent chance of showers after 8pm. Mostly cloudy, with a low around 52.
Tuesday
A 40 percent chance of showers. Mostly cloudy, with a high near 59.
Tuesday Night
Mostly cloudy, with a low around 47.
Wednesday
Mostly sunny, with a high near 60.
Wednesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 48.
Thursday
A chance of showers. Partly sunny, with a high near 61.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Chappaqua NY
 41.17°N 73.77°W (Elev. 545 ft)
Last Update:
2:41 pm EDT Sep 17, 2026
Forecast Valid:
4pm EDT Sep 17, 2026-6pm EDT Sep 24, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation