Greenwich (CT) Weather and Climate: A Comprehensive Guide
Greenwich experiences great temperature shifts.
The city's weather can transition from warm days
to cold weather.
It is also known for its large amounts of rain/snowfall.
Now, let’s explore all the climate details to give you a full picture.
Average maximum day and minimum night temperature
The climate in Greenwich is known for significant temperature differences throughout the year, making the weather dynamic. Typically, average maximum daytime temperatures range from a comfortable 29°C in July to a chilly 4°C in the coolest month, February.
Nights are cooler, with lows often dropping to around -5°C during the colder months. Check out our detailed temperature page for more information.Temperature ranges by month
Precipitation and rainy days
Greenwich has a notably wet climate with abundant precipitation, recording 1221 mm of rain/snowfall per year. Greenwich offers a pleasant mix of wetter and slightly drier months. The difference in precipitation between June (130 mm) and November (77 mm) is not too significant, making the climate enjoyable for visitors and residents alike.The mean monthly precipitation over the year, including rain, hail and snow
The average number of days each month with precipitation
Sunshine over the year
For those who appreciate different seasons, Greenwich serves as an ideal destination. Expect longer, more sun-filled days in July with an average of 9.0 hours of sunshine daily, and embrace the darker days in December, offering only 4.7 hours of daily sunlight. Visit our detailed sunshine hours page for more information.Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Average humidity
The relative humidity is high throughout the year in Greenwich.
The city experiences its highest humidity in September, reaching 68%. In April, the humidity drops to its lowest level at 55%. Explore our detailed page on humidity levels for further details.
Relative humidity over the year
clear and no rain almost clear and no rain broken clouds and snowForecast for Greenwich (CT)
6 m/s
4 m/s
4 m/s
The best time of year to visit Greenwich in the United States of America
During the months of May, June and September you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.Other facts from our historical weather data:
The hottest season / summer takes place in June, July, August and September.
July has an average maximum temperature of 29°C and is the warmest month of the year.
The coldest month is February with an average maximum temperature of 4°C.
June tops the wettest month list with 130 mm of rainfall.
November is the driest month with 77 mm of precipitation.
July is the sunniest month with an average of 271 hours of sunshine.
No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.
