December weather forecast
New Preston, CT

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Weather in December

The first month of the winter, December, is also a wintry month in New Preston, Connecticut, with an average temperature ranging between max 37°F (2.8°C) and min 26.6°F (-3°C).

Temperature

The average high-temperature drops in December, from November's frosty 47.1°F (8.4°C) to a cold 37°F (2.8°C). New Preston's nighttime temperature during December is consistently averaged at a freezing cold 26.6°F (-3°C).

Humidity

In New Preston, the average relative humidity in December is 80%.

Rainfall

In December, in New Preston, Connecticut, the rain falls for 10.9 days. Throughout December, 3.35" (85mm) of precipitation is accumulated. In New Preston, during the entire year, the rain falls for 161.7 days and collects up to 34.41" (874mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In December, it is snowing for 6.9 days. Throughout December, 2.95" (75mm) of snow is accumulated. Throughout the year, there are 38.3 snowfall days, and 19.84" (504mm) of snow is accumulated.

Daylight

December has the shortest days of the year, with an average of 9h and 12min of daylight.
On the first day of December, sunrise is at 7:01 am and sunset at 4:23 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 4:33 pm EST.

Sunshine

In December, the average sunshine is 4.6h.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the average person.
Note: The maximum UV index of 2 during December leads to these instructions:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
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Frequently asked questions

How cold is it in New Preston in December?

New Preston in December has an average high-temperature of 37°F (2.8°C) and an average low-temperature of 26.6°F (-3°C). In July, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines air temperature and relative humidity, is evaluated at 87.8°F (31°C).

What is the average humidity in December in New Preston?

In New Preston, Connecticut, the average relative humidity in December is 80%.

How many days does it rain in December in New Preston?

In New Preston, Connecticut, during December, the rain falls for 10.9 days and regularly aggregates up to 3.35" (85mm) of precipitation.

How much does it snow in New Preston in December?

In New Preston, Connecticut, during December, snow falls for 6.9 days and regularly aggregates up to 2.95" (75mm) of snow.

What is the month with the shortest days in New Preston?

The month with the shortest days in New Preston is December, with an average of 9h and 12min of daylight.

What is the average length of the day in December in New Preston?

In New Preston, Connecticut, the average day length in December is 9h and 13min.

When is the sunrise / sunset in December in New Preston?

In December, on the first day of the month, sunrise is at 7:01 am and sunset at 4:23 pm. On the last day of the month, in New Preston, Connecticut, sunrise is at 7:20 am and sunset at 4:33 pm EST.

How long on average sun shines in December in New Preston?

In New Preston, the average sunshine duration in December is 4.6h.

What is the month with the lowest UV index in New Preston?

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

How high is the UV index in December in New Preston?

The average daily maximum UV index in December in New Preston is 2. A UV Index estimate of 2, and below, represents a minimal hazard to health 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
New Preston, CT

Average temperature in December - New Preston, CT
  • Average high temperature in December: 37°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (31.5°F).

  • Average low temperature in December: 26.6°F

The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).

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Average pressure in December
New Preston, CT

Average pressure in December - New Preston, CT
  • Average pressure in December: 30.06"Hg

The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in December
New Preston, CT

Average wind speed in December - New Preston, CT
  • Average wind speed in December: 7.4mph

The windiest month (with the highest average wind speed) is March (7.9mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

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Average humidity in December
New Preston, CT

Average humidity in December - New Preston, CT
  • Average humidity in December: 80%

The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is April (73%).

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Average rainfall in December
New Preston, CT

Average rainfall in December - New Preston, CT
  • Average rainfall in December: 3.35"

The wettest month (with the highest rainfall) is July (3.7").
The driest month (with the least rainfall) is January (2.13").

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Average rainfall days in December
New Preston, CT

Average rainfall days in December - New Preston, CT
  • Average rainfall days in December: 10.9 days

The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is January (7.7 days).

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Average snowfall in December
New Preston, CT

Average snowfall in December - New Preston, CT
  • Average snowfall in December: 2.95"

The month with the highest snowfall is February (5.16").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
New Preston, CT

Average snowfall days in December - New Preston, CT
  • Average snowfall days in December: 6.9 days

The month with the highest number of snowfall days is February (10.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in December /
Average sunshine in December
New Preston, CT

Average daylight in December / Average sunshine in December - New Preston, 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 4min

The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).

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Average sunshine days in December
New Preston, CT

Average sunshine days in December - New Preston, CT
  • Average sunshine days in December: 15.7 days

The month with the most sunshine days is January (17.5 days).
The month with the least sunshine days is June (10.3 days).

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Average UV index in December
New Preston, CT

Average UV index in December - New Preston, CT
  • Average UV index in December: 2

The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

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Average cloud cover in December
New Preston, CT

Average cloud cover in December - New Preston, CT
  • Average cloud cover in December: 51

The month with the most cloud cover is February (Cloud cover 52).
The months with the least cloud cover are July and August (Cloud cover 37).

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Average visibility in December
New Preston, CT

Average visibility in December - New Preston, CT
  • Average visibility in December: 5mi

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

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New Preston, Connecticut, USA

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