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

Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

Current conditions at

White Plains - Westchester County Airport (KHPN)

Lat: 41.06°NLon: 73.7°WElev: 367ft.

Fair

59°F

15°C

Humidity 75%
Wind Speed N 12 mph
Barometer 30.19 in (1021.8 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Last update 29 Aug 5:56 am EDT
Extended Forecast for

Old Greenwich CT

  • Today

    Today: Sunny, with a high near 79. North wind 5 to 7 mph becoming calm in the afternoon.

    High: 79 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 61. Light southwest wind.

    Low: 61 °F

    Mostly Clear

  • Sunday

    Sunday: A chance of showers between 2pm and 5pm, then a slight chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 83. Light west wind becoming southwest 5 to 9 mph in the morning. Chance of precipitation is 30%.

    High: 83 °F

    Mostly Sunny
    then Chance
    Showers

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms, then a chance of showers after 8pm. Mostly cloudy, with a low around 67. Southwest wind around 6 mph. Chance of precipitation is 40%.

    Low: 67 °F

    Chance
    Showers

  • Monday

    Monday: A 20 percent chance of showers. Partly sunny, with a high near 81. Light northwest wind.

    High: 81 °F

    Slight Chance
    Showers

  • Monday Night

    Monday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 66.

    Low: 66 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 79. Chance of precipitation is 50%.

    High: 79 °F

    Chance
    Showers then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm before 2am, then a chance of showers. Mostly cloudy, with a low around 68. Chance of precipitation is 60%.

    Low: 68 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A chance of showers before 8am, then a chance of showers after 2pm. Mostly cloudy, with a high near 80. Chance of precipitation is 40%.

    High: 80 °F

    Chance
    Showers

Detailed Forecast

Today
Sunny, with a high near 79. North wind 5 to 7 mph becoming calm in the afternoon.
Tonight
Mostly clear, with a low around 61. Light southwest wind.
Sunday
A chance of showers between 2pm and 5pm, then a slight chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 83. Light west wind becoming southwest 5 to 9 mph in the morning. Chance of precipitation is 30%.
Sunday Night
A slight chance of showers and thunderstorms, then a chance of showers after 8pm. Mostly cloudy, with a low around 67. Southwest wind around 6 mph. Chance of precipitation is 40%.
Monday
A 20 percent chance of showers. Partly sunny, with a high near 81. Light northwest wind.
Monday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 66.
Tuesday
A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 79. Chance of precipitation is 50%.
Tuesday Night
Showers likely and possibly a thunderstorm before 2am, then a chance of showers. Mostly cloudy, with a low around 68. Chance of precipitation is 60%.
Wednesday
A chance of showers before 8am, then a chance of showers after 2pm. Mostly cloudy, with a high near 80. Chance of precipitation is 40%.
Wednesday Night
A chance of showers before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 69. Chance of precipitation is 60%.
Thursday
A 40 percent chance of showers. Partly sunny, with a high near 82.
Thursday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 65.
Friday
Mostly sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Old Greenwich CT
 41.04°N 73.56°W (Elev. 66 ft)
Last Update:
2:28 am EDT Aug 29, 2026
Forecast Valid:
6am EDT Aug 29, 2026-6pm EDT Sep 4, 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