December weather forecast
East Killingly, CT

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Weather in December

The first month of the winter, December, is still a cold month in East Killingly, Connecticut, with an average temperature fluctuating between 28.8°F (-1.8°C) and 39.4°F (4.1°C).

Temperature

As December arrives, East Killingly's weather displays a decrease in high-temperatures, transitioning from November's frosty 49.1°F (9.5°C) to a wintry 39.4°F (4.1°C). East Killingly's average low-temperature is measured at a subzero cold 28.8°F (-1.8°C) during December.

Humidity

In East Killingly, the average relative humidity in December is 78%.

Rainfall

December is the month with the most rainfall in East Killingly. Rain falls for 11.5 days and accumulates 3.43" (87mm) of precipitation.

Snowfall

Months with snowfall are January through May, November and December. In East Killingly, in December, snow falls for 5 days, with typically accumulated 2.48" (63mm) of snow. Throughout the year, there are 30.6 snowfall days, and 14.02" (356mm) of snow is accumulated.

Daylight

The month with the shortest days in East Killingly, Connecticut, is December, with an average of 9h and 12min of daylight.
On the first day of December, sunrise is at 6:55 am and sunset at 4:17 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 4:26 pm EST.

Sunshine

In December, the average sunshine in East Killingly is 4.8h.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in East Killingly. A UV Index value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum daily UV index of 2 during December translates into the following directions:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Experience reduced UV exposure by about half when donning a wide-brim hat. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is December in East Killingly?

In December, in East Killingly, the average high-temperature is 39.4°F (4.1°C), and the average low-temperature is 28.8°F (-1.8°C). In July, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines air temperature and relative humidity, is calculated to be 86°F (30°C).

What is the average humidity in December in East Killingly?

In December, the average relative humidity in East Killingly is 78%.

What is the rainiest month in East Killingly?

December is the month with the most rainfall in East Killingly, Connecticut. Rain falls for 11.5 days and accumulates 3.43" (87mm) of precipitation.

How much does it rain in East Killingly in December?

In East Killingly, in December, during 11.5 rainfall days, 3.43" (87mm) of precipitation is typically accumulated.

How many days does it snow in December in East Killingly?

In December, in East Killingly, Connecticut, it is snowing for 5 days. Throughout December, 2.48" (63mm) of snow is accumulated.

What is the month with the shortest days in East Killingly?

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

How many hours of daylight does East Killingly have in December?

The average day length in December in East Killingly is 9h and 12min.

When is the sunrise / sunset in December in East Killingly?

On the first day of December, sunrise is at 6:55 am and sunset at 4:17 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 4:26 pm EST.

How many hours of sunshine does East Killingly have in December?

The average sunshine duration in December in East Killingly, Connecticut, is 4.8h.

What is the month with the lowest UV index in East Killingly?

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

How high is the UV index in December in East Killingly?

In December, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from unsafe 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
East Killingly, CT

Average temperature in December - East Killingly, CT
  • Average high temperature in December: 39.4°F

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (33.4°F).

  • Average low temperature in December: 28.8°F

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).

Average pressure in December
East Killingly, CT

Average pressure in December - East Killingly, 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
East Killingly, CT

Average wind speed in December - East Killingly, CT
  • Average wind speed in December: 8.8mph

The windiest month (with the highest average wind speed) is January (9.3mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).

Average humidity in December
East Killingly, CT

Average humidity in December - East Killingly, CT
  • Average humidity in December: 78%

The months with the highest relative humidity are February, June, July, September and October (79%).
The month with the lowest relative humidity is April (73%).

Average rainfall in December
East Killingly, CT

Average rainfall in December - East Killingly, CT
  • Average rainfall in December: 3.43"

The wettest month (with the highest rainfall) is December (3.43").
The driest month (with the least rainfall) is September (1.81").

Average rainfall days in December
East Killingly, CT

Average rainfall days in December - East Killingly, CT
  • Average rainfall days in December: 11.5 days

The month with the highest number of rainy days is July (17.5 days).
The month with the least rainy days is January (8.3 days).

Average snowfall in December
East Killingly, CT

Average snowfall in December - East Killingly, CT
  • Average snowfall in December: 2.48"

The month with the highest snowfall is March (3.7").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in December
East Killingly, CT

Average snowfall days in December - East Killingly, CT
  • Average snowfall days in December: 5 days

The month with the highest number of snowfall days is January (7.8 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
East Killingly, CT

Average daylight in December / Average sunshine in December - East Killingly, 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 12min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

Average sunshine days in December
East Killingly, CT

Average sunshine days in December - East Killingly, CT
  • Average sunshine days in December: 15.8 days

The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is June (10.6 days).

Average UV index in December
East Killingly, CT

Average UV index in December - East Killingly, 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
East Killingly, CT

Average cloud cover in December - East Killingly, CT
  • Average cloud cover in December: 48

The months with the most cloud cover are February and March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 34).

Average visibility in December
East Killingly, CT

Average visibility in December - East Killingly, CT
  • Average visibility in December: 6mi

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

East Killingly, Connecticut, USA

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