Old Greenwich, Connecticut 

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Climate in Old Greenwich, Connecticut

Old Greenwich, Connecticut gets 51 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Old Greenwich averages 30 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 175 sunny days per year in Old Greenwich. The US average is 205 sunny days.

Old Greenwich gets some kind of precipitation, on average, 124 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.


Weather Highlights

Summer High: the July high is around 83 degrees
Winter Low: the January low is 22
Rain: averages 51 inches of rain a year
Snow: averages 30 inches of snow a year


BESTPLACES COMFORT INDEX

The annual BestPlaces Comfort Index for Old Greenwich is 7.1 (10=best), which means it is more comfortable than most places in Connecticut.

7.1 / 10
June, September and August are the most pleasant months in Old Greenwich, while January and February are the least comfortable months.

Climate Averages
  Old Greenwich, ConnecticutUnited States
  50.7 in.38.1 in.
  29.8 in.27.8 in.
  123.9 days106.2 days
  175 days205 days
  83.2°85.8°
  21.6°21.7°
  7.17
  3.44.3
  20 ft.2443 ft.
CLIMATE

YOU SHOULD KNOW

Many people confuse weather and climate but they are different. Weather is the conditions of the atmosphere over a short period of time, and climate is how the atmosphere is over long periods of time.

Weather is how the atmosphere is behaving and its effects upon life and human activities. Weather can change from minute-to-minute. Most people think of weather in terms of temperature, humidity, precipitation, cloudiness, brightness, visibility, wind, and atmospheric pressure.

Climate is the description of the long-term pattern of weather in a place. Climate can mean the average weather for a particular region and time period taken over 30 years. Climate is the average of weather over time.


July is the hottest month for Old Greenwich with an average high temperature of 83.2°, which ranks it as about average compared to other places in Connecticut. In Old Greenwich, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Old Greenwich are June, August and September.


January has the coldest nighttime temperatures for Old Greenwich with an average of 21.6°. This is warmer than most places in Connecticut.


In Old Greenwich, there are 8.5 days annually when the high temperature is over 90°, which is hotter than most places in Connecticut.


In Old Greenwich, there are 106.1 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Connecticut.


In Old Greenwich, there are 0.9 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Connecticut.


September is the wettest month in Old Greenwich with 4.7 inches of rain, and the driest month is February with 3.1 inches. The wettest season is Winter with 27% of yearly precipitation and 22% occurs in Spring, which is the driest season. The annual rainfall of 50.7 inches in Old Greenwich means that it is wetter than most places in Connecticut.


May is the rainiest month in Old Greenwich with 12.0 days of rain, and February is the driest month with only 9.0 rainy days. There are 123.9 rainy days annually in Old Greenwich, which is rainier than most places in Connecticut. The rainiest season is Summer when it rains 28% of the time and the driest is Winter with only a 24% chance of a rainy day.


An annual snowfall of 29.8 inches in Old Greenwich means that it is less snowy than most places in Connecticut. February is the snowiest month in Old Greenwich with 9.0 inches of snow, and 6 months of the year have significant snowfall.





CLIMATE MAP
  • Annual Rainfall (US Avg: 36.5")
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