December weather forecast
Colesville, NJ

Share

Weather in December

The first month of the winter, December, is still a cold month in Colesville, New Jersey, with an average temperature varying between 26.8°F (-2.9°C) and 38.3°F (3.5°C).

Temperature

The onset of December comes with a shift in the average high-temperature, falling from a frosty 48.4°F (9.1°C) in November to an icy 38.3°F (3.5°C). Throughout the nights in December, Colesville experiences an average low-temperature of 26.8°F (-2.9°C).

Humidity

February, October and December, with an average relative humidity of 82%, are the most humid months in Colesville.

Rainfall

In Colesville, in December, during 11.5 rainfall days, 2.99" (76mm) of precipitation is typically accumulated. In Colesville, during the entire year, the rain falls for 165.2 days and collects up to 31.57" (802mm) of precipitation.

Snowfall

Months with snowfall in Colesville are January through May, October through December. In Colesville, New Jersey, during December, snow falls for 6.6 days and regularly aggregates up to 3.27" (83mm) of snow. In Colesville, during the entire year, snow falls for 37.1 days and aggregates up to 19.92" (506mm) of snow.

Daylight

With an average of 9h and 18min of daylight, December has the shortest days of the year.
On the first day of December in Colesville, sunrise is at 7:05 am and sunset at 4:30 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 4:39 pm EST.

Sunshine

The average sunshine in December is 4.6h.

UV index

December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: A maximum daily UV index of 1 during December morphs into the following directions:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
[Resources]

Frequently asked questions

How cold does it get in Colesville in December?

During December, Colesville experiences an average high-temperature of 38.3°F (3.5°C) and a low-temperature of 26.8°F (-2.9°C). The average heat index (a.k.a. 'real feel', 'feels like'), which combines relative humidity and air temperature, in July is evaluated at 89.6°F (32°C).

What is the most humid month in Colesville?

The months with the highest humidity in Colesville, New Jersey, are February, October and December, with an average relative humidity of 82%.

What is the average humidity in December in Colesville?

In Colesville, the average relative humidity in December is 82%.

How much does it rain in Colesville in December?

In December, in Colesville, the rain falls for 11.5 days. Throughout December, 2.99" (76mm) of precipitation is accumulated.

How many days does it snow in December in Colesville?

In Colesville, New Jersey, during December, snow falls for 6.6 days and regularly aggregates up to 3.27" (83mm) of snow.

What is the month with the shortest days in Colesville?

The month with the shortest days in Colesville, New Jersey, is December, with an average of 9h and 18min of daylight.

How many hours of daylight does Colesville have in December?

In December, the average day length in Colesville is 9h and 16min.

When are sunrise and sunset in December in Colesville?

On the first day of December in Colesville, sunrise is at 7:05 am and sunset at 4:30 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 4:39 pm EST.

How many hours of sunshine does Colesville have in December?

The average sunshine duration in December is 4.6h.

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

With an average maximum UV index of 1, December is the month with the lowest UV index in Colesville.

What is the UV index reading in December in Colesville?

The average daily maximum UV index in December in Colesville is 1. A UV Index reading of 2, and below, represents a low health risk from unsafe 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
Colesville, NJ

Average temperature in December - Colesville, NJ
  • Average high temperature in December: 38.3°F

The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (32.7°F).

  • Average low temperature in December: 26.8°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).

[Resources]

Average pressure in December
Colesville, NJ

Average pressure in December - Colesville, NJ
  • Average pressure in December: 30.08"Hg

The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

[Resources]

Average wind speed in December
Colesville, NJ

Average wind speed in December - Colesville, NJ
  • Average wind speed in December: 6.9mph

The windiest month (with the highest average wind speed) is March (7.7mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

[Resources]

Average humidity in December
Colesville, NJ

Average humidity in December - Colesville, NJ
  • Average humidity in December: 82%

The months with the highest relative humidity are February, October and December (82%).
The month with the lowest relative humidity is April (76%).

[Resources]

Average rainfall in December
Colesville, NJ

Average rainfall in December - Colesville, NJ
  • Average rainfall in December: 2.99"

The wettest month (with the highest rainfall) is May (3.15").
The driest month (with the least rainfall) is September (1.81").

[Resources]

Average rainfall days in December
Colesville, NJ

Average rainfall days in December - Colesville, NJ
  • Average rainfall days in December: 11.5 days

The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is January (9 days).

[Resources]

Average snowfall in December
Colesville, NJ

Average snowfall in December - Colesville, NJ
  • Average snowfall in December: 3.27"

The month with the highest snowfall is February (5.43").
The months with the least snowfall are June, July, August and September (0").

[Resources]

Average snowfall days in December
Colesville, NJ

Average snowfall days in December - Colesville, NJ
  • Average snowfall days in December: 6.6 days

The month with the highest number of snowfall days is February (10 days).
The months with the least snowfall days are June, July, August and September (0 days).

[Resources]

Average daylight in December /
Average sunshine in December
Colesville, NJ

Average daylight in December / Average sunshine in December - Colesville, NJ
  • Average daylight in December: 9h and 2min

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 18min).

  • 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 12min).

[Resources]

Average sunshine days in December
Colesville, NJ

Average sunshine days in December - Colesville, NJ
  • Average sunshine days in December: 15.8 days

The month with the most sunshine days is November (17.3 days).
The month with the least sunshine days is April (10.7 days).

[Resources]

Average UV index in December
Colesville, NJ

Average UV index in December - Colesville, NJ
  • Average UV index in December: 1

The month with the highest UV index is June (UV index 6).
The month with the lowest UV index is December (UV index 1).

[Resources]

Average cloud cover in December
Colesville, NJ

Average cloud cover in December - Colesville, NJ
  • Average cloud cover in December: 51

The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 36).

[Resources]

Average visibility in December
Colesville, NJ

Average visibility in December - Colesville, NJ
  • Average visibility in December: 5mi

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

[Resources]

Colesville, New Jersey, USA

Weather forecast for your location

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