December weather forecast
Dayville, CT

Share

Weather in December

The first month of the winter, December, is also an icy month in Dayville, Connecticut, with an average temperature varying between 39.4°F (4.1°C) and 28.8°F (-1.8°C).

Temperature

Welcoming December, Dayville observes a shift in the average high-temperature, falling from November's frosty 49.1°F (9.5°C) to a wintry 39.4°F (4.1°C). During December, the nighttime temperature in Dayville, Connecticut, averages to a freezing cold 28.8°F (-1.8°C).

Humidity

The average relative humidity in December is 78%.

Rainfall

The month with the most rainfall is December, when the rain falls for 11.5 days and typically aggregates up to 3.43" (87mm) of precipitation.

Snowfall

January through May, November and December are months with snowfall in Dayville, Connecticut. In Dayville, during December, snow falls for 5 days and regularly aggregates up to 2.48" (63mm) of snow. In Dayville, during the entire year, snow falls for 30.6 days and aggregates up to 14.02" (356mm) of snow.

Daylight

December has the shortest days of the year in Dayville, with an average of 9h and 12min of daylight.
On the first day of December in Dayville, sunrise is at 6:56 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 is 4.8h.

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 minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: In December, the maximum UV index of 2 transforms into these recommendations:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. To cut down UV radiation exposure by about half, sport a wide-brim hat. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
[Resources]

Frequently asked questions

Is it cold in Dayville during December?

During December, Dayville experiences an average high-temperature of 39.4°F (4.1°C) and a low-temperature of 28.8°F (-1.8°C). In July, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which factors the actual air temperature with the relative humidity, is calculated to be 86°F (30°C).

What is the average humidity in December in Dayville?

The average relative humidity in December in Dayville, Connecticut, is 78%.

What is the wettest month in Dayville?

The month with the most rainfall in Dayville is December, when the rain falls for 11.5 days and typically aggregates up to 3.43" (87mm) of precipitation.

How many days does it rain in December in Dayville?

In December, in Dayville, Connecticut, the rain falls for 11.5 days. Throughout December, 3.43" (87mm) of precipitation is accumulated.

How many days does it snow in December in Dayville?

In Dayville, during December, snow falls for 5 days and regularly aggregates up to 2.48" (63mm) of snow.

What is the month with the shortest days in Dayville?

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

How many hours of daylight does Dayville have in December?

The average day length in December in Dayville, Connecticut, is 9h and 12min.

When are sunrise and sunset in December in Dayville?

On the first day of December in Dayville, Connecticut, sunrise is at 6:56 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 Dayville have in December?

The average sunshine duration in December in Dayville is 4.8h.

When is the lowest UV index in Dayville?

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

How high is the UV index in December in Dayville?

The average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a low health threat from exposure to the Sun's UV radiation.
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
Dayville, CT

Average temperature in December - Dayville, 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).

[Resources]

Average pressure in December
Dayville, CT

Average pressure in December - Dayville, 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).

[Resources]

Average wind speed in December
Dayville, CT

Average wind speed in December - Dayville, 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).

[Resources]

Average humidity in December
Dayville, CT

Average humidity in December - Dayville, 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%).

[Resources]

Average rainfall in December
Dayville, CT

Average rainfall in December - Dayville, 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").

[Resources]

Average rainfall days in December
Dayville, CT

Average rainfall days in December - Dayville, 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).

[Resources]

Average snowfall in December
Dayville, CT

Average snowfall in December - Dayville, 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").

[Resources]

Average snowfall days in December
Dayville, CT

Average snowfall days in December - Dayville, 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).

[Resources]

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

Average daylight in December / Average sunshine in December - Dayville, 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).

[Resources]

Average sunshine days in December
Dayville, CT

Average sunshine days in December - Dayville, 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).

[Resources]

Average UV index in December
Dayville, CT

Average UV index in December - Dayville, 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).

[Resources]

Average cloud cover in December
Dayville, CT

Average cloud cover in December - Dayville, 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).

[Resources]

Average visibility in December
Dayville, CT

Average visibility in December - Dayville, 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).

[Resources]

Dayville, Connecticut, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location