December weather forecast
Canterbury, CT

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Weather in December

The first month of the winter, December, is also a wintry month in Canterbury, Connecticut, with an average temperature ranging between min 29.3°F (-1.5°C) and max 40.1°F (4.5°C).

Temperature

Welcoming December, Canterbury observes a shift in the average high-temperature, falling from November's chilly 49.1°F (9.5°C) to a cold 40.1°F (4.5°C). Nighttime temperatures hover around an average low of 29.3°F (-1.5°C) in December.

Humidity

In Canterbury, the average relative humidity in December is 77%.

Rainfall

December is the month with the most rainfall. Rain falls for 11.2 days and accumulates 3.39" (86mm) of precipitation.

Snowfall

Months with snowfall are January through May, November and December. In Canterbury, in December, snow falls for 4.9 days, with typically accumulated 1.97" (50mm) of snow. In Canterbury, during the entire year, snow falls for 29.7 days and aggregates up to 12.99" (330mm) of snow.

Daylight

With an average of 9h and 12min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 6:56 am and sunset at 4:18 pm. On the last day of December, sunrise is at 7:14 am and sunset at 4:27 pm EST.

Sunshine

The average sunshine in December is 4.9h.

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 estimate of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A maximum daily UV index of 2 during December morphs into the following directions:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.

Frequently asked questions

How cold is it in December?

December temperatures vary between a high-temperature of 40.1°F (4.5°C) and a low-temperature of 29.3°F (-1.5°C). In July, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines relative humidity and air temperature, is estimated at 86°F (30°C).

What is the average humidity in December?

In Canterbury, the average relative humidity in December is 77%.

What is the wettest month?

The month with the most rainfall is December, when the rain falls for 11.2 days and typically aggregates up to 3.39" (86mm) of precipitation.

How many days does it rain in December?

In Canterbury, during December, the rain falls for 11.2 days and regularly aggregates up to 3.39" (86mm) of precipitation.

How much does it snow in December?

In Canterbury, in December, snow falls for 4.9 days, with typically accumulated 1.97" (50mm) of snow.

What is the month with the shortest days?

With an average of 9h and 12min of daylight, December has the shortest days of the year.

What is the average length of the day in December?

In Canterbury, the average day length in December is 9h and 13min.

When are sunrise and sunset in December?

On the first day of December, sunrise is at 6:56 am and sunset at 4:18 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 4:27 pm EST.

How long on average sun shines in December?

The average sunshine duration in December is 4.9h.

What are the months with the lowest UV index?

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

What is the UV index reading in December?

In Canterbury, the average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a low health threat from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Canterbury, CT

Average temperature in December - Canterbury, CT
  • Average high temperature in December: 40.1°F

The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (34°F).

  • Average low temperature in December: 29.3°F

The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (22.3°F).

Average pressure in December
Canterbury, CT

Average pressure in December - Canterbury, CT
  • Average pressure in December: 30.04"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
Canterbury, CT

Average wind speed in December - Canterbury, CT
  • Average wind speed in December: 9mph

The windiest months (with the highest average wind speed) are January and March (9.4mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).

Average humidity in December
Canterbury, CT

Average humidity in December - Canterbury, CT
  • Average humidity in December: 77%

The months with the highest relative humidity are February, June, July and September (79%).
The month with the lowest relative humidity is April (72%).

Average rainfall in December
Canterbury, CT

Average rainfall in December - Canterbury, CT
  • Average rainfall in December: 3.39"

The wettest month (with the highest rainfall) is December (3.39").
The driest month (with the least rainfall) is September (1.73").

Average rainfall days in December
Canterbury, CT

Average rainfall days in December - Canterbury, CT
  • Average rainfall days in December: 11.2 days

The month with the highest number of rainy days is July (17.7 days).
The month with the least rainy days is January (8.3 days).

Average snowfall in December
Canterbury, CT

Average snowfall in December - Canterbury, CT
  • Average snowfall in December: 1.97"

The month with the highest snowfall is March (3.62").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in December
Canterbury, CT

Average snowfall days in December - Canterbury, CT
  • Average snowfall days in December: 4.9 days

The month with the highest number of snowfall days is February (7.7 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

Average daylight in December /
Average sunshine in December
Canterbury, CT

Average daylight in December / Average sunshine in December - Canterbury, CT
  • Average daylight in December: 9h and 1min

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

  • Average sunshine in December: 4h and 5min

The months with the most sunshine are July and August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

Average sunshine days in December
Canterbury, CT

Average sunshine days in December - Canterbury, CT
  • Average sunshine days in December: 15.6 days

The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is June (10.3 days).

Average UV index in December
Canterbury, CT

Average UV index in December - Canterbury, 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
Canterbury, CT

Average cloud cover in December - Canterbury, CT
  • Average cloud cover in December: 47

The month with the most cloud cover is March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 33).

Average visibility in December
Canterbury, CT

Average visibility in December - Canterbury, CT
  • Average visibility in December: 6mi

The months with the highest visibility are January, February, March, April, September, October, November and December (6mi).
The months with the lowest visibility are May, June, July and August (5mi).

Canterbury, Connecticut, USA

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