New London Weather in July

What's the weather like in New London (Connecticut) in July 2025?

The climate in New London during July can be summarized as warm, humid and a little damp.

July is in the summer in New London and is typically the warmest month of the year. Daytime maximum temperatures average around a muggy 27°C (81°F), whilst at night 17°C (62°F) is normal.

New London weather averages (imperial / metric)
Daytime temperature 27°C 80.5°F
Nightly temperature 16.7°C 62°F
Average temperature 21.8°C 71.2°F
Daily sunshine 9.6 hrs
Avg rainfall 88 mm 3.5 ins
Rainy days 9 days
Sea temperature 20.6°C 69.1°F
Humidity 71%
Windspeed 14.8kph 9 mph

On average July is the 2nd driest month of the year in New London with around 88mm 3.5 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.

On the flip side this corresponds to an average of 9.6 hours of sunshine per day.

July temperatures in New London

New London average temperature in July

July rainfall

New London average rain in July

July hourly sunshine

New London average rain in July

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in New London in July 2025.