Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average sea temperature in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
December's onset in New London brings a slight change in high-temperatures, falling from a fresh 50.9°F (10.5°C) in November to a wintry 41.9°F (5.5°C). New London marks an average drop to 33.3°F (0.7°C) during nighttime in December, following the high of the day.Humidity
In New London, the average relative humidity in December is 75%.Rainfall
December is the month with the most rainfall in New London. Rain falls for 13.4 days and accumulates 3.86" (98mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. In New London, in December, during 4.8 snowfall days, 1.22" (31mm) of snow is typically accumulated. In New London, during the entire year, snow falls for 24 days and aggregates up to 7.68" (195mm) of snow.Ocean temperature
In New London, in December, the average water temperature is 48.9°F (9.4°C).Note: Staying in 48.9°F (9.4°C) waters for just a few moments at 55.4°F (13°C) can be harrowing, and below 50°F (10°C) poses breathing and cold shock risks, depending on individual tolerance.
Daylight
December has the shortest days of the year, with an average of 9h and 12min of daylight.On the first day of the month, sunrise is at 6:55 am and sunset at 4:19 pm. On the last day of December, sunrise is at 7:14 am and sunset at 4:29 pm EST.
Sunshine
February and December, with an average of 4.9h of sunshine, are months with the least sunshine in New London.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for the ordinary person.Note: A maximum daily UV index of 2 during December morphs into the following directions:
Children necessitate constant protection from sunlight, unlike the majority, who can remain under the sun for about an hour without burning. The solar radiation around mid-day is intense; avoid the Sun and stay safe. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it cold in New London during December?
What is the average humidity in December in New London?
What is the wettest month in New London?
How many days does it rain in December in New London?
How many days does it snow in December in New London?
How cold is the water in December in New London?
What is the month with the shortest days in New London?
What is the average length of the day in December in New London?
What time are sunrise and sunset in December in New London?
What is the month with the least sunshine in New London?
How many hours of sunshine does New London have in December?
What is the month with the lowest UV index in New London?
What is the UV index intensity in December in New London?
Average temperature in December
New London, CT
- Average high temperature in December: 41.9°F
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).
- Average low temperature in December: 33.3°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 in December
New London, CT
- Average pressure in December: 30.05"Hg
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 in December
New London, CT
- Average wind speed in December: 11.5mph
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 in December
New London, CT
- Average humidity in December: 75%
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 in December
New London, CT
- Average rainfall in December: 3.86"
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 in December
New London, CT
- Average rainfall days in December: 13.4 days
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 in December
New London, CT
- Average snowfall in December: 1.22"
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 in December
New London, CT
- Average snowfall days in December: 4.8 days
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 in December
New London, CT
- Average sea temperature in December: 48.9°F
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 in December /
Average sunshine in December
New London, CT
- Average daylight in December: 9h and 1min
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).
- Average sunshine in December: 4h and 5min
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 in December
New London, CT
- Average sunshine days in December: 13.9 days
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 in December
New London, CT
- Average UV index in December: 2
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 in December
New London, CT
- Average cloud cover in December: 47
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 in December
New London, CT
- Average visibility in December: 6mi
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
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