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Old Greenwich Weather Warning NWS WEATHER ALERT FOR THE OLD GREENWICH, CT AREA - Issued: 436 PM EDT Fri Sep 18 2026 Old Greenwich Weather Warning

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Weather for Old Greenwich, CTOld Greenwich, CT Weather & Current Conditions

06878 Weather (Old Greenwich, CT)

Old Greenwich, CT WeatherCurrent Conditions and Weather for Old Greenwich, Connecticut
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Mostly Cloudy at Old Greenwich (06878), temperature is 78°F26°C, dew point 58°F14°C, humidity 49%. Wind direction is N at 9 mphat 14 km/h with visibility of 10 mi16 km. Barometric pressure is 30.05 in1017 mb. Last update: 5:04 pm.*
*Time is approximately 5:04 pm Fri, Sep 18, 2026. Time will be within 15 minutes of current local time. Old Greenwich weather forecast data is updated every 15 minutes.

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I Say... It's so hot! The hens are picking up worms with potholders! ―Foghorn Leghorn
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Old Greenwich CT Weather - 5:04 pm

Old Greenwich Weather Forecast

Weather forecast for: Old Greenwich CT
Last Update: 3:10 pm EDT Sep 18, 2026
Tonight: Partly cloudy, with a low around 57. North wind 8 to 13 mph.
Saturday: Mostly sunny, with a high near 69. Northeast wind 8 to 13 mph becoming east in the afternoon.
Saturday Night: Mostly cloudy, with a low around 61. Southeast wind 6 to 8 mph.
Sunday: A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 69. South wind 6 to 13 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night: Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 60. Light and variable wind becoming north 6 to 11 mph in the evening. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
Monday: A 30 percent chance of showers. Mostly cloudy, with a high near 68.
Monday Night: A 30 percent chance of showers before 2am. Mostly cloudy, with a low around 57.
Tuesday: A 30 percent chance of showers after 8am. Mostly cloudy, with a high near 63. Breezy.
Tuesday Night: Mostly cloudy, with a low around 55. Breezy.
Wednesday: Mostly cloudy, with a high near 63. Breezy.
Wednesday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 55. Breezy.
Thursday: A 30 percent chance of showers. Mostly cloudy, with a high near 62. Breezy.
Thursday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 55. Breezy.
Friday: A 30 percent chance of showers. Partly sunny, with a high near 66.

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