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

79°F

26°C

Humidity 74%
Wind Speed SE 9 mph
Barometer 30.05 in (1016.9 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 13 Jul 5:56 pm EDT
Extended Forecast for

Chappaqua NY

  • Tonight

    Tonight: Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 69. South wind 3 to 7 mph.

    Low: 69 °F

    Patchy Fog

  • Monday

    Monday: Showers and thunderstorms likely, mainly after 5pm. Mostly cloudy, with a high near 84. South wind 3 to 6 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 84 °F

    Slight Chance
    T-storms then
    T-storms
    Likely

  • Monday Night

    Monday Night: Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 70. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 70 °F

    T-storms
    Likely

  • Tuesday

    Tuesday: A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 85. Light south wind. Chance of precipitation is 50%.

    High: 85 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Light south wind. Chance of precipitation is 20%.

    Low: 71 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Wednesday

    Wednesday: A 40 percent chance of showers after 2pm. Partly sunny, with a high near 88.

    High: 88 °F

    Partly Sunny
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers before 2am. Mostly cloudy, with a low around 73.

    Low: 73 °F

    Chance
    Showers

  • Thursday

    Thursday: A 50 percent chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 90.

    High: 90 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 73.

    Low: 73 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 69. South wind 3 to 7 mph.
Monday
Showers and thunderstorms likely, mainly after 5pm. Mostly cloudy, with a high near 84. South wind 3 to 6 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday Night
Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 70. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday
A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 85. Light south wind. Chance of precipitation is 50%.
Tuesday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Light south wind. Chance of precipitation is 20%.
Wednesday
A 40 percent chance of showers after 2pm. Partly sunny, with a high near 88.
Wednesday Night
A 30 percent chance of showers before 2am. Mostly cloudy, with a low around 73.
Thursday
A 50 percent chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 90.
Thursday Night
A 30 percent chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 73.
Friday
A 40 percent chance of showers after 2pm. Partly sunny, with a high near 91.
Friday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 69.
Saturday
A 30 percent chance of showers. Partly sunny, with a high near 85.
Saturday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 67.
Sunday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84.
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ABOUT THIS FORECAST

 
Point Forecast:
Chappaqua NY
 41.17°N 73.77°W (Elev. 545 ft)
Last Update:
5:47 pm EDT Jul 13, 2025
Forecast Valid:
6pm EDT Jul 13, 2025-6pm EDT Jul 20, 2025
 
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