The climate of Greenwich
Greenwich,
Connecticut, lies within a climate zone classified as Cfa according to the Köppen Climate Classification. This designates it as a humid subtropical region with no pronounced dry season. Geographically, Greenwich's proximity to the Atlantic Ocean has a profound effect on its climate due to the ocean's moderating influence.
The year in Greenwich sees a significant range of temperature, which fluctuates from an average low of 26.1°F (-3.3°C) in
January to the year's average high of 82°F (27.8°C) in
July. The warm period lasts from
June to
September with comfortable temperatures ranging from 73.4°F (23°C) to 80.6°F (27°C). The cold stretch extends from
December through
March with temperatures dipping to a chilly 35.8°F (2.1°C) to 41.9°F (5.5°C).
The humidity remains relatively constant throughout the year, hovering around the 72% to 75% mark. Residents and visitors alike should anticipate these levels of humidity that can change the "feel" of actual temperatures, especially during the warmer months. Greenwich also experiences fluctuating rainfall levels from
February to
August, where measurements range from 2.4" (61mm) to 4.13" (105mm), while snowfall occurs predominantly in December and January, recording measurements of 1.97" (50mm) and 2.52" (64mm), respectively.
The best time to visit Greenwich
The optimum time to visit
Greenwich would be from late spring to early fall, specifically between
May and
September. During this period, the temperatures are comfortable and range from 66.2°F (19°C) up to 80.6°F (27°C). These months also have substantial daylight hours, peaking at 15.1 hours in
June. However, potential visitors should note that these months also have the highest rainfall measurements, peaking at 4.13" (105mm) in
July, which might require occasional indoor activities.
The worst time to visit Greenwich
From a comfort point of view, the least ideal time to visit
Greenwich lies between
December and
February. During these months, temperatures plummet to a chilly average low of 26.1°F (-3.3°C) in
January and a high of only 38.3°F (3.5°C) in February. Despite its lower rainfall, these months record the highest snowfall figures in the year, with January's snowfall measuring around 1.97" (50mm). Limited daylight, with just 9.6 hours in December, might further detract from the visitor experience.
Spring weather in Greenwich
Springtime in
Greenwich, lasting from
March to
May, heralds a gradual rise in temperatures. March starts with a cool 45°F (7.2°C), but by May, temperatures would have soared to a comfortable 66.2°F (19°C). The hours of daylight per day significantly increase from 12 hours in March to 14.5 hours in May. Spring months also experience an increase in rainfall, culminating in an average of 3.11" (79mm) falling in May.
Summer weather in Greenwich
Summer, extending from
June to
August, unfolds as the warmest period in
Greenwich. The average high in this season soars to a peak of 82°F (27.8°C) in
July, while the average low temperature hovers around 69.1°F (20.6°C). Despite recording the highest rainfall of the year, with 4.13" (105mm) in July, the ample average sunshine hours (peaking at 10.5 hours in July) and a relative humidity of around 73% make these months ideal for outdoor activities.
Autumn weather in Greenwich
The Autumn season kickstarts in
September, carrying on until
November. During this period, temperatures start to decline from a mild 73.4°F (23°C) in September to a cooler 50.9°F (10.5°C) in November. Rainfall in this season also decreases, reaching a year-low of 2.72" (69mm) in September. Autumn in
Greenwich is also graced by moderate daylight hours, declining from 12.5 hours in September to 9.9 hours by November.
Winter weather in Greenwich
The chill of winter engulfs
Greenwich in
December and persists until
February. The temperatures during this period can prove quite harsh, especially in
January where the average low is 26.1°F (-3.3°C). The average high also remains relatively low, peaking at only 38.3°F (3.5°C) in February. Conditions are such that it leads to snowfall, accumulating to 2.52" (64mm) in February. Despite the winter chill, the relative humidity remains steady and sunshine hours range from 4.8 to 5 hours per day.
Weather in January
January bustles with the chill of winter in
Greenwich,
Connecticut, USA. The mountainscape appears stunning under the blanket of snow, adding to the city's winter charm. Notably, the lowest temperature records fall between 26.1°F (-3.3°C) to 35.8°F (2.1°C), indicating a frosty ambiance.
Weather in January » Weather in February
As
Greenwich transitions from
January to
February, the city witnesses marginal climatic changes. The snow continues to mark its presence, making the city a haven for snow lovers. February holds the record for the highest snowfall of the year, measuring from 2.52" (64mm).
Weather in February »Weather in March
March brings a sigh of relief from the freezing temperatures. Although remnants of winter are still felt, signs of the spring season start appearing across
Greenwich. The mercury level gradually rises from the freezing point, marking the arrival of warmer days.
Weather in March »
Weather in April
April signifies the awaited arrival of spring in
Greenwich. The landscape transitions from white to color, blessed with the blossoms of the season. The spectrum of temperature swings between 43.5°F (6.4°C) and 55.4°F (13°C), making it a comfortable month for outdoor exploration.
Weather in April » Weather in May
May witnesses a definitive spike in temperature, bringing warmer days to
Greenwich. Relishing the sunlight becomes a common sight as the city gears towards summer. May boasts the maximum daylight hours, reaching up to 14.5 hours, ensuring the city stays active for longer.
Weather in May » Weather in June
In
June,
Greenwich embraces the full spectrum of summer with longer, sunnier days. The sea temperature rises to a pleasant 63°F (17.2°C), enhancing the appeal of beach visits. Amid the warmth of the summer sun, various outdoor events uplift the city's vibrant charm.
Weather in June »
Weather in July
July stands as the warmest month in
Greenwich with temperatures peaking up to 82°F (27.8°C). A dip in the sea becomes enticing with the water temperature averaging around 70.9°F (21.6°C). Despite dominating sunshine, an average of 18.1 days of rainfall brings occasional respite from the summer heat.
Weather in July » Weather in August
August holds on to the summer warmth, radiating the classic New England charm.
Greenwich sees regular visitors thronging the famous beaches and parks. Nevertheless, the temperature slightly decreases from
July, ranging from 68.7°F (20.4°C) to 80.6°F (27°C), making it a mild summer month.
Weather in August » Weather in September
With the arrival of
September,
Greenwich begins its transition from summer to fall. The foliage starts to change, painting the city with hues of autumn. The temperature also drops, signaling the impending colder months. Despite a decrease from
August, the 3.5" (89mm) rainfall is relatively high for September.
Weather in September »
Weather in October
October brings a definitive autumn feel to
Greenwich. The cityscape adorned with fall colors presents a picturesque view. With the temperature ranging from 51.8°F (11°C) to 62.4°F (16.9°C), it's the perfect time for outdoor exploits.
Weather in October » Weather in November
November in
Greenwich denotes the beginning of the winter season. The city gears up for the cold with preparations visible all around. The landscape dons a stark look, with most of the leaves fallen off the trees. Snow starts making its appearance, with 0.24" (6mm) recorded on average.
Weather in November » Weather in December
December marks the height of winter in
Greenwich. The entire city gets covered in the white of snow and the sparkling lights of the holiday season. With the lowest sea temperature marked at 47.1°F (8.4°C), it observes the longest nights of the year with just 9.3 hours of daylight on average.
Weather in December »