Climate and monthly weather forecast
New London, CT

Today
Tomorrow
Long-term
YearJFMAMJJASOND
°Celsius°Fahrenheit
Share
Contents
A part of the city of New London, Connecticut, with intricate buildings overlooking the calm water
A part of the city of New London, Connecticut, with intricate buildings overlooking the calm water

The climate of New London

New London, a city located in Connecticut, USA, experiences a climate classified by Köppen as Cfb. This climate type, commonly referred to as Marine west coast, warm summer, is characteristically mild with no dry season and warm summers. The city's position along the coast influences its weather significantly, causing it to exhibit features such as mild winters, relatively warm summers, and consistent precipitation throughout the year.

Notably, average high temperatures in New London range from 36.1°F (2.3°C) in January to 78.6°F (25.9°C) in July, while low temperatures fluctuate between 26.2°F (-3.2°C) in January and 66.7°F (19.3°C) in July. Interestingly, the city's coldest month is in January, while July stands out as the warmest. The city's relative humidity stands reasonably steady throughout the year, with the lowest figure being recorded in March and November at 74%. The highest relative humidity of 80% is recorded in June.

Rainfall in New London doesn't fluctuate dramatically, with precipitation ranging from 1.65" (42mm) in September to 3.86" (98mm) in December. However, the city experiences more rainfall days during the months of May and July, with an average of 15.8 days, while February observes the least with 9.5 days. Snowfall is experienced mostly from January to March and in December, with January and February recording the highest averages of 1.81" (46mm) and 1.85" (47mm) respectively.

The best time to visit New London

For visitors looking to enjoy the warmest weather, the period from June to August stands out as the best time to tour New London. During this time, average high temperatures range from 71.4°F (21.9°C) to 78.6°F (25.9°C), with peak temperatures occurring in July. The encouraging warmth of these summer months allows for various outdoor activities, from visiting the city's historical sites to engaging in water sports along the coast, without concern for excessive heat.

The worst time to visit New London

Travellers looking to avoid the coldest weather might want to refrain from visiting New London from December to February when the city experiences its lowest temperatures. January holds the record for the coldest weather, with an average low temperature of 26.2°F (-3.2°C), and also receives the maximum amount of snowfall. These climatic obstacles could potentially hinder activities for visitors unaccustomed to cold weather.

Spring weather in New London

Spring in New London, which reveals itself from March to May, is characterised by a progressive rise in temperatures. During this period, the city's high temperatures change from 43.3°F (6.3°C) in March to 63.3°F (17.4°C) in May, while the average lows shift from 32.9°F (0.5°C) to 50.9°F (10.5°C). Rainfall also increases from 2.95" (75mm) in March to peak at 3.11" (79mm) in April. This blend of moderate rainfall, warming temperatures, and blooming flora makes spring in New London a captivating sight to behold.

Summer weather in New London

Summertime in New London, stretching from June to August, marks the peak of warm temperatures. During this period, the city experiences high temperatures of between 71.4°F (21.9°C) and 78.6°F (25.9°C) and lows ranging from 59°F (15°C) to 66.7°F (19.3°C). Despite the relatively humid conditions, the average rainfall decreases from 2.72" (69mm) in June to 2.36" (60mm) in August, resulting in a mostly dry and comfortable summer.

Autumn weather in New London

Autumn in New London witnesses a gradual reduction in temperature and a surge in rainfall. During this season, spanning September to November, high temperatures diminish from 72°F (22.2°C) in September to 50.9°F (10.5°C) in November, while low temperatures fall from 59.9°F (15.5°C) to 40.6°F (4.8°C). Of note, rainfall peaks in October with an average of 3.39" (86mm), making it the rainiest month in autumn.

Winter weather in New London

Winter in New London, occurring from December to February, is characterized by the lowest temperatures and significant snowfall. Throughout this season, high temperatures range from 36.1°F (2.3°C) in December to 37.9°F (3.3°C) in February, whereas low temperatures vary between 33.3°F (0.7°C) and 26.2°F (-3.2°C). Moreso, most snowfall occurs during these months, specifically in January and February, with average snowfall amounting to 1.81" (46mm) and 1.85" (47mm) respectively.

Weather in January

Weather in New London, Connecticut opens the year with a wintry face. Snow cover accompanies low temperatures, setting a tranquil scene befitting the month of January. The city can expect temperatures from 26.2°F (-3.2°C) to 36.1°F (2.3°C) during this month, with snowfall reaching an average of 1.81" (46mm). Weather in January »

Weather in February

Moving into February, slightly warmer temperatures result in a mild winter experience in New London, Connecticut. Notably, the month experiences minor increases in temperature, rainfall, and daylight hours. Typical temperature values span from 27°F (-2.8°C) to 37.9°F (3.3°C), and snowfall averages at about 1.85" (47mm). Weather in February »

Weather in March

As New London transitions into spring in March, the weather begins to temper. Increases in temperature, humidity, and daylight hours symbolize the arrival of the spring season. The temperature range in March extends from 32.9°F (0.5°C) to 43.3°F (6.3°C), with snowfall dwindling to 2.56" (65mm). Weather in March »

Weather in April

April carries the warmth of spring further into the year in New London, Connecticut. A noticeable increase in temperatures and daylight hours illuminates the city with a gentle radiance. Temperatures during this month can be expected to sway from 42.4°F (5.8°C) to 53.4°F (11.9°C), while snowfall becomes almost negligible with an average of 0.08" (2mm). Weather in April »

Weather in May

May sees the city of New London, Connecticut transition smoothly from spring to the early advent of summer. A greater amount of daylight brings a relaxed ambiance, perfect for outdoor pursuits. With the temperature fluctuating between 50.9°F (10.5°C) to 63.3°F (17.4°C), no snowfall is recorded during this month. Weather in May »

Weather in June

June serves as a full introduction to summer in New London, Connecticut. The weather during this month offers the perfect conditions for picnics in the park or sunbathing at the beach. Average temperatures register between 59°F (15°C) to 71.4°F (21.9°C) without any snowfall. Weather in June »

Weather in July

July, in New London, Connecticut, presents itself as the peak of summer. This month features some of the warmest weather and longest hours of daylight. With an average temperature range of 66.7°F (19.3°C) to 78.6°F (25.9°C), no snowfall is recorded in July. Weather in July »

Weather in August

The sunny charm continues into August, as New London, Connecticut experiences more summer weather. Warm temperatures and calm winds create an atmosphere of tranquility over the city. Average temperatures range from 66.2°F (19°C) to 77.7°F (25.4°C), with no record of snowfall. Weather in August »

Weather in September

September in New London, Connecticut is characterized by the subtle commencement of fall. A decline in temperature and daylight hours signals the arrival of the harvest season. The average temperature fluctuates between 59.9°F (15.5°C) to 72°F (22.2°C) without any recorded snowfall. Weather in September »

Weather in October

October in New London, Connecticut is notably characterized by the defining colors of autumn. A further decrease in temperature and daylight hours takes hold as the city transitions into the fall season. Typical temperatures shift from 50.9°F (10.5°C) to 61.7°F (16.5°C), with no trace of snowfall. Weather in October »

Weather in November

The city of New London, Connecticut in November experiences a significant shift in weather conditions with the advent of winter. Temperatures experience a dip, an increase in humidity, and a decrease in daylight hours. With temperatures varying from 40.6°F (4.8°C) to 50.9°F (10.5°C), the city sees its first appearance of snow, averaging 0.16" (4mm). Weather in November »

Weather in December

December heralds the heart of winter in New London, Connecticut, illuminating the cityscape with holiday decorations. Weather during this month involves abundant snowfall, lower temperatures, and decreased daylight hours. Average temperatures range from 33.3°F (0.7°C) to 41.9°F (5.5°C), accompanied by an increase in snowfall up to 1.22" (31mm). Weather in December »
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What month is the coldest in New London?

January, characterized by an average high temperature of 36.1°F (2.3°C) and a low temperature of 26.2°F (-3.2°C), is generally the coldest month in New London, Connecticut.

What is the least humid month in New London?

January, March, April and November, with an average relative humidity of 74%, are the least humid months.

How many days does it rain in New London?

In New London, Connecticut, during the entire year, the rain falls for 159.8 days and collects up to 33.07" (840mm) of precipitation.

When does it snow in New London?

Months with snowfall are January through April, November and December.

How much does it snow in New London?

Throughout the year, in New London, Connecticut, there are 24 snowfall days, and 7.68" (195mm) of snow is accumulated.

What are the months with the lowest UV index in New London?

The months with the lowest UV index in New London, Connecticut, are January through March, November and December, with an average maximum UV index of 2.

What is the month with the coldest ocean in New London?

February is the month with the coldest seawater, with an average ocean temperature of 38.8°F (3.8°C).

What are the months with the least sunshine in New London?

The months with the least sunshine are February and December, with an average of 4.9h of sunshine.

When does it snow the most in New London?

The month with the most snowfall in New London is March, when snow falls for 5.1 days and typically aggregates up to 2.56" (65mm) of snow.

When is Daylight Saving Time (DST) in New London?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.

When it does not snow in New London?

May through October are months without snowfall.

What is the most humid month in New London?

The most humid month in New London is June, with an average relative humidity of 80%.

When are the longest days in New London?

With an average of 15h and 6min of daylight, June has the longest days of the year.

What is the month with the highest UV index in New London?

The months with the highest UV index in New London, Connecticut, are June through August, with an average maximum UV index of 6.

What are the warmest months in New London?

In New London, July is identified by the average highest temperatures, reaching a peak of 78.6°F (25.9°C) and a low of 66.7°F (19.3°C).

What is the month with the warmest ocean in New London?

The month with the warmest seawater in New London is August, with an average ocean temperature of 72.1°F (22.3°C).

What month has the most sunshine in New London?

August has the most sunshine of the year in New London, Connecticut, with an average of 10.6h of sunshine.

What is the driest month in New London?

The month with the least rainfall in New London, Connecticut, is September, when the rain falls for 12 days and typically collects 1.65" (42mm) of precipitation.

What is the wettest month in New London?

December is the month with the most rainfall in New London. Rain falls for 13.4 days and accumulates 3.86" (98mm) of precipitation.

What is the month with the shortest days in New London?

December has the shortest days of the year in New London, Connecticut, with an average of 9h and 12min of daylight.
Today
Tomorrow
Long-term
YearJFMAMJJASOND

Average temperature
New London, CT

Average temperature - New London, CT

The warmest month (with the highest average high temperature) is July (78.6°F).
The month with the lowest average high temperature is January (36.1°F).

The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (26.2°F).

Average pressure
New London, CT

Average pressure - New London, CT

The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed
New London, CT

Average wind speed - New London, CT

The windiest month (with the highest average wind speed) is January (11.9mph).
The calmest months (with the lowest average wind speed) are July and August (7.8mph).

Average humidity
New London, CT

Average humidity - New London, CT

The month with the highest relative humidity is June (80%).
The months with the lowest relative humidity are January, March, April and November (74%).

Average rainfall
New London, CT

Average rainfall - New London, CT

The wettest month (with the highest rainfall) is December (3.86").
The driest month (with the least rainfall) is September (1.65").

Average rainfall days
New London, CT

Average rainfall days - New London, CT

The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is February (9.5 days).

Average snowfall
New London, CT

Average snowfall - New London, CT

The month with the highest snowfall is March (2.56").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days
New London, CT

Average snowfall days - New London, CT

The month with the highest number of snowfall days is February (6.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

Average sea temperature
New London, CT

Average sea temperature - New London, CT

The best month for swimming (with the highest average sea temperature) is August (72.1°F).
The coldest month (with the lowest average sea temperature) is February (38.8°F).

Average daylight / Average sunshine
New London, CT

Average daylight / Average sunshine - New London, CT

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).

The month with the most sunshine is August (Average sunshine: 10h and 36min).
The months with the least sunshine are February and December (Average sunshine: 4h and 54min).

Average sunshine days
New London, CT

Average sunshine days - New London, CT

The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is February (12.5 days).

Average UV index
New London, CT

Average UV index - New London, CT

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover
New London, CT

Average cloud cover - New London, CT

The months with the most cloud cover are February, March and December (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 29).

Average visibility
New London, CT

Average visibility - New London, CT

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

New London, Connecticut, USA

Weather forecast for today
Weather forecast for tomorrow
10 days weather forecast
Climate data
1January
2February
3March
4April
5May
6June
7July
8August
9September
10October
11November
12December

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location