December weather forecast
New Fairfield, CT

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Weather in December

December, the first month of the winter in New Fairfield, is also an icy month, with an average temperature varying between 38.3°F (3.5°C) and 27.5°F (-2.5°C).

Temperature

The arrival of December corresponds with a reduction in the average high-temperature, down from November's frosty 48.4°F (9.1°C) to a cold 38.3°F (3.5°C). New Fairfield experiences an average nighttime temperature of 27.5°F (-2.5°C) in the month of December.

Humidity

The average relative humidity in December in New Fairfield is 79%.

Rainfall

In December, in New Fairfield, the rain falls for 10.6 days. Throughout December, 3.82" (97mm) of precipitation is accumulated. In New Fairfield, during the entire year, the rain falls for 163.7 days and collects up to 37.32" (948mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In December, it is snowing for 7 days. Throughout December, 3.54" (90mm) of snow is accumulated. In New Fairfield, during the entire year, snow falls for 40.1 days and aggregates up to 22.4" (569mm) of snow.

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 4:25 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 4:34 pm EST.

Sunshine

In New Fairfield, the average sunshine in December is 4.5h.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in New Fairfield. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the average person.
Note: The maximum daily UV index of 2 in December interprets into the following recommendations:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold does it get in New Fairfield in December?

The average high-temperature and low-temperature in New Fairfield during December are 38.3°F (3.5°C) and 27.5°F (-2.5°C) respectively. In July, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines relative humidity and air temperature, is calculated to be 87.8°F (31°C).

What is the average humidity in December in New Fairfield?

In New Fairfield, the average relative humidity in December is 79%.

How much does it rain in New Fairfield in December?

In December, the rain falls for 10.6 days. Throughout December, 3.82" (97mm) of precipitation is accumulated.

How many days does it snow in December in New Fairfield?

In December, in New Fairfield, Connecticut, it is snowing for 7 days. Throughout December, 3.54" (90mm) of snow is accumulated.

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

December has the shortest days of the year in New Fairfield, with an average of 9h and 12min of daylight.

How many hours of daylight does New Fairfield have in December?

In New Fairfield, Connecticut, the average day length in December is 9h and 14min.

When are sunrise and sunset in December in New Fairfield?

In December, on the first day of the month, sunrise is at 7:01 am and sunset at 4:25 pm. On the last day of the month, in New Fairfield, Connecticut, sunrise is at 7:20 am and sunset at 4:34 pm EST.

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

The average sunshine duration in December in New Fairfield is 4.5h.

What are the months with the lowest UV index in New Fairfield?

The months with the lowest UV index in New Fairfield, 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 New Fairfield?

In December, the average daily maximum UV index in New Fairfield is 2. A UV Index value of 2, and less, symbolizes a low health risk 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
New Fairfield, CT

Average temperature in December - New Fairfield, CT
  • Average high temperature in December: 38.3°F

The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (32.5°F).

  • Average low temperature in December: 27.5°F

The month with the highest average low temperature is July (62.8°F).
The coldest month (with the lowest average low temperature) is January (21.4°F).

Average pressure in December
New Fairfield, CT

Average pressure in December - New Fairfield, 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).

Average wind speed in December
New Fairfield, CT

Average wind speed in December - New Fairfield, CT
  • Average wind speed in December: 7.3mph

The windiest month (with the highest average wind speed) is March (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity in December
New Fairfield, CT

Average humidity in December - New Fairfield, CT
  • Average humidity in December: 79%

The months with the highest relative humidity are February and October (80%).
The month with the lowest relative humidity is April (73%).

Average rainfall in December
New Fairfield, CT

Average rainfall in December - New Fairfield, CT
  • Average rainfall in December: 3.82"

The wettest month (with the highest rainfall) is July (3.9").
The driest month (with the least rainfall) is January (2.36").

Average rainfall days in December
New Fairfield, CT

Average rainfall days in December - New Fairfield, CT
  • Average rainfall days in December: 10.6 days

The month with the highest number of rainy days is July (18.4 days).
The month with the least rainy days is January (7.5 days).

Average snowfall in December
New Fairfield, CT

Average snowfall in December - New Fairfield, CT
  • Average snowfall in December: 3.54"

The month with the highest snowfall is February (5.67").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
New Fairfield, CT

Average snowfall days in December - New Fairfield, CT
  • Average snowfall days in December: 7 days

The month with the highest number of snowfall days is February (10.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

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

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in December: 4h and 3min

The months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).

Average sunshine days in December
New Fairfield, CT

Average sunshine days in December - New Fairfield, CT
  • Average sunshine days in December: 14.3 days

The month with the most sunshine days is November (16.8 days).
The month with the least sunshine days is June (10.2 days).

Average UV index in December
New Fairfield, CT

Average UV index in December - New Fairfield, 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).

Average cloud cover in December
New Fairfield, CT

Average cloud cover in December - New Fairfield, CT
  • Average cloud cover in December: 52

The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is August (Cloud cover 37).

Average visibility in December
New Fairfield, CT

Average visibility in December - New Fairfield, 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).

New Fairfield, Connecticut, USA

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