New London (CT) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit New London.
Climate overview of New London
The climate in New London, Connecticut, United States of America, is marked by large temperature swings across the seasons, ranging from 27°C (81°F) in July to 4°C (39°F) in February.
The city has a wet climate, receiving around 1258 mm (50 in) of rain/snowfall per year. December is the wettest month. July is the sunniest month, averaging 9.8 hours of sunshine per day.
New London Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in New London — and find the best time to visit.
Monthly Temperature in New London
In New London, temperatures differ significantly between summer and winter months. On average, daytime temperatures range from a comfortable 27°C (81°F) in July to a chilly 4°C (39°F) in February.
Nighttime temperatures range from 19°C (66°F) in July to -6°C (21°F) in February.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in New London
New London experiences significant rain/snowfall throughout the year, averaging 1258 mm (50 in) of precipitation annually. The wettest period in New London occurs in December, which receives around 129 mm (5.1 in) of precipitation. During the driest month, November, New London experiences moderate rainfall, totaling 94 mm (3.7 in). The consistent precipitation levels throughout the year contribute to a relatively stable climate. For more details, please visit our New London Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in New London
In New London, summer days are longer and more sunny, with daily sunshine hours peaking at 9.8 hours in July. As the darker season arrives, the brightness of the sun becomes less. November sees a soft sun for only 4.6 hours per average day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in New London by Month
The relative humidity is high throughout the year in New London.
The city experiences its highest humidity in September, reaching 72%. In April, the humidity drops to its lowest level at 58%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit New London
Frequently asked questions about the climate in New London
What is the best time to visit New London?
July and August typically offer the most optimal weather in New London. In contrast, January, February, March and December tend to have less optimal conditions.
What temperatures can I expect in New London?
Daytime highs range from 4°C (39°F) in February to 27°C (81°F) in July. Nighttime lows range from -6°C (21°F) to 19°C (66°F). Temperatures vary considerably through the year.
How much rain does New London get?
Annual rainfall is around 1258 mm (50 in). December is the wettest month with 129 mm (5.1 in), while November is the driest with 94 mm (3.7 in).
How sunny is New London?
New London receives around 2,579 hours of sunshine per year. July is the sunniest month with 293 hours, while November is the cloudiest with just 139 hours. Overall, New London enjoys abundant sunshine.
New London 3-Day Forecast
New London (CT) 3-Day Forecast
New London on the map
New London is highlighted — select any city to see its climate.
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