December weather forecast
Brooklyn, CT

Share

Weather in December

The first month of the winter, December, is still a cold month in Brooklyn, Connecticut, with temperature in the range of an average low of 28.8°F (-1.8°C) and an average high of 39.4°F (4.1°C).

Temperature

Setting in of December comes with a decrease in the average high-temperature, moving from a chilly 49.1°F (9.5°C) in November to a cold 39.4°F (4.1°C). The nighttime temperature in Brooklyn, during December, averages of 28.8°F (-1.8°C).

Humidity

In December, the average relative humidity 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

Months with snowfall in Brooklyn are January through May, November and December. In December, it is snowing for 5 days. Throughout December, 2.48" (63mm) of snow is accumulated. In Brooklyn, Connecticut, 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 Brooklyn, with an average of 9h and 12min of daylight.
On the first day of the month, sunrise is at 6:56 am and sunset at 4:17 pm. On the last day of December, in Brooklyn, sunrise is at 7:15 am and sunset at 4:27 pm EST.

Sunshine

In Brooklyn, the average sunshine in December 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 Brooklyn. 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: 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 UV radiation is especially harmful around midday, so reduce exposure and stay safe. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
[Resources]

Frequently asked questions

Is December cold in Brooklyn?

The high-temperature, in December, in Brooklyn, is 39.4°F (4.1°C), while the low-temperature averages to 28.8°F (-1.8°C). In July, the average heat index (a.k.a. 'feels like', 'real feel'), which combines relative humidity and air temperature, is evaluated at 86°F (30°C).

What is the average humidity in December in Brooklyn?

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

What is the rainiest month in Brooklyn?

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

How much does it rain in Brooklyn in December?

In Brooklyn, Connecticut, in December, it is raining for 11.5 days, with typically 3.43" (87mm) of accumulated precipitation.

How much does it snow in Brooklyn in December?

In Brooklyn, in December, snow falls for 5 days, with typically accumulated 2.48" (63mm) of snow.

What is the month with the shortest days in Brooklyn?

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

How many hours of daylight does Brooklyn have in December?

In Brooklyn, Connecticut, the average day length in December is 9h and 12min.

When is the sunrise / sunset in December in Brooklyn?

In December, on the first day of the month, sunrise is at 6:56 am and sunset at 4:17 pm. On the last day of the month, in Brooklyn, Connecticut, sunrise is at 7:15 am and sunset at 4:27 pm EST.

How many hours of sunshine does Brooklyn have in December?

In Brooklyn, the average sunshine duration in December is 4.8h.

What is the month with the lowest UV index in Brooklyn?

The months with the lowest UV index in Brooklyn, 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 Brooklyn?

In Brooklyn, Connecticut, the average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to 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
Brooklyn, CT

Average temperature in December - Brooklyn, 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
Brooklyn, CT

Average pressure in December - Brooklyn, 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
Brooklyn, CT

Average wind speed in December - Brooklyn, 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
Brooklyn, CT

Average humidity in December - Brooklyn, 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
Brooklyn, CT

Average rainfall in December - Brooklyn, 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
Brooklyn, CT

Average rainfall days in December - Brooklyn, 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
Brooklyn, CT

Average snowfall in December - Brooklyn, 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
Brooklyn, CT

Average snowfall days in December - Brooklyn, 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
Brooklyn, CT

Average daylight in December / Average sunshine in December - Brooklyn, 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
Brooklyn, CT

Average sunshine days in December - Brooklyn, 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
Brooklyn, CT

Average UV index in December - Brooklyn, 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
Brooklyn, CT

Average cloud cover in December - Brooklyn, 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
Brooklyn, CT

Average visibility in December - Brooklyn, 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]

Brooklyn, Connecticut, USA

Weather forecast for your location

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