December weather forecast and climate
Killingworth, CT

Weather in December

December, the first month of the winter, in Killingworth, is still a cold month, with average temperature ranging between min 32.4°F (0.2°C) and max 41.9°F (5.5°C).

Temperature

In December, the average high-temperature slightly decreases, from a cool 50.7°F (10.4°C) in November, to a wintry 41.9°F (5.5°C). In December, the average low-temperature is 32.4°F (0.2°C).

Humidity

In Killingworth, the average relative humidity is 75%.

Rainfall

December is the month with the most rainfall in Killingworth. Rain falls for 13 days and accumulates 3.66" (93mm) of precipitation.

Snowfall

January through May, November and December are months with snowfall in Killingworth. In Killingworth, during 4.4 snowfall days, 1.34" (34mm) of snow is typically accumulated. Throughout the year, in Killingworth, Connecticut, there are 24.2 snowfall days, and 9.53" (242mm) of snow is accumulated.

Daylight

December has the shortest days of the year in Killingworth, with an average of 9.2h of daylight.

Sunshine

Months with the least sunshine are February and December, with an average of 4.8h of sunshine.

UV index

Months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low health risk from the exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 2 in December transform into the following instructions:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
[Resources]

FAQ

What is the temperature in December in Killingworth?

In December, in Killingworth, the average high-temperature is 41.9°F (5.5°C), and the average low-temperature is 32.4°F (0.2°C).

What is the average humidity in December in Killingworth?

The average relative humidity in December in Killingworth, Connecticut, is 75%.

How many days does it rain in December in Killingworth?

In Killingworth, Connecticut, in December, it is raining for 13 days, with typically 3.66" (93mm) of accumulated precipitation.

What is the wettest month in Killingworth?

December is the month with the most rainfall in Killingworth, Connecticut. Rain falls for 13 days and accumulates 3.66" (93mm) of precipitation.

How many days does it snow in December in Killingworth?

In December, in Killingworth, Connecticut, it is snowing for 4.4 days. Throughout December, 1.34" (34mm) of snow is accumulated.

What is the month with the shortest days in Killingworth?

December has the shortest days of the year, with an average of 9.2h of daylight.

How many hours of daylight does Killingworth have in December?

In December, the average length of the day is 9.2h.

What is the month with the least sunshine in Killingworth?

February and December, with an average of 4.8h of sunshine, are months with the least sunshine in Killingworth.

How long on average sun shines in December in Killingworth?

The average sunshine in December in Killingworth is 4.8h.

What are the months with the lowest UV index in Killingworth?

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

What is the UV index intensity in December in Killingworth?

In Killingworth, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from the exposure to the Sun's UV rays.

Average temperature in December
Killingworth, CT

Average temperature in December - Killingworth, CT
  • Average high temperature in December: 41.9°F

The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (35.2°F).

  • Average low temperature in December: 32.4°F

The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (25.5°F).

[Resources]

Average pressure in December
Killingworth, CT

Average pressure in December - Killingworth, CT
  • Average pressure in December: 30.05"

The month with the highest atmospheric pressure is November (30.08").
The month with the lowest atmospheric pressure is June (29.93").

[Resources]

Average wind speed in December
Killingworth, CT

Average wind speed in December - Killingworth, CT
  • Average wind speed in December: 10.6mph

The windiest month (with the highest average wind speed) is January (10.9mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).

[Resources]

Average humidity in December
Killingworth, CT

Average humidity in December - Killingworth, CT
  • Average humidity in December: 75%

Months with the highest relative humidity are May, June and July (78%).
The month with the lowest relative humidity is April (73%).

[Resources]

Average rainfall in December
Killingworth, CT

Average rainfall in December - Killingworth, CT
  • Average rainfall in December: 3.66"

The wettest month (with the highest rainfall) is December (3.66").
The driest month (with the least rainfall) is September (1.93").

[Resources]

Average rainfall days in December
Killingworth, CT

Average rainfall days in December - Killingworth, CT
  • Average rainfall days in December: 13 days

The month with the highest number of rainy days is July (17 days).
The month with the least rainy days is January (9 days).

[Resources]

Average snowfall in December
Killingworth, CT

Average snowfall in December - Killingworth, CT
  • Average snowfall in December: 1.34"

The month with the highest snowfall is March (2.76").
Months with the least snowfall are June, July, August, September and October (0").

[Resources]

Average snowfall days in December
Killingworth, CT

Average snowfall days in December - Killingworth, CT
  • Average snowfall days in December: 4.4 days

The month with the highest number of snowfall days is February (7 days).
Months with the least snowfall days are June, July, August and September (0 days).

[Resources]

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

Average daylight in December / Average sunshine in December - Killingworth, CT
  • Average daylight in December: 9.2h

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.2h).

  • Average sunshine in December: 4.8h

The month with the most sunshine is August (Average sunshine: 10.6h).
Months with the least sunshine are February and December (Average sunshine: 4.8).

[Resources]

Average sunshine days in December
Killingworth, CT

Average sunshine days in December - Killingworth, CT
  • Average sunshine days in December: 14.8 days

The month with the most sunshine days is November (17.1 days).
The month with the least sunshine days is July (11.7 days).

[Resources]

Average UV index in December
Killingworth, CT

Average UV index in December - Killingworth, CT
  • Average UV index in December: 2

Months with the highest UV index are June, July and August (UV index 6).
Months with the lowest UV index are January, February, March, November and December (UV index 2).

[Resources]

Average cloud cover in December
Killingworth, CT

Average cloud cover in December - Killingworth, CT
  • Average cloud cover in December: 48

Months with the most cloud cover are February and December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 29).

[Resources]

Average visibility in December
Killingworth, CT

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

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

[Resources]