December weather forecast
New Wilmington, PA

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Weather in December

December, the first month of the winter in New Wilmington, is also a wintry month, with an average temperature varying between 26.6°F (-3°C) and 37.6°F (3.1°C).

Temperature

Setting in of December comes with a decrease in the average high-temperature, moving from a chilly 47.1°F (8.4°C) in November to a cold 37.6°F (3.1°C). An average low-temperature of 26.6°F (-3°C) is recorded in the month of December.

Humidity

The average relative humidity in December is 86%.

Rainfall

In December, the rain falls for 13.5 days. Throughout December, 2.72" (69mm) of precipitation is accumulated. Throughout the year, there are 185.5 rainfall days, and 35.51" (902mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall in New Wilmington. In December, it is snowing for 15.5 days. Throughout December, 5.51" (140mm) of snow is accumulated. Throughout the year, there are 74.5 snowfall days, and 29.45" (748mm) of snow is accumulated.

Daylight

With an average of 9h and 18min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 7:27 am and sunset at 4:53 pm. On the last day of the month, sunrise is at 7:46 am and sunset at 5:02 pm EST.

Sunshine

The average sunshine in December is 3h.

UV index

The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: A maximum high UV index of 1 in December translates into the following recommendations:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Updated: Aug 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in December?

The high-temperature, in December, in New Wilmington, is 37.6°F (3.1°C), while the low-temperature averages to 26.6°F (-3°C). In July, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is appraised at 87.8°F (31°C).

What is the average humidity in December?

In New Wilmington, the average relative humidity in December is 86%.

How much does it rain in December?

In New Wilmington, Pennsylvania, in December, during 13.5 rainfall days, 2.72" (69mm) of precipitation is typically accumulated.

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

In New Wilmington, in December, snow falls for 15.5 days, with typically accumulated 5.51" (140mm) of snow.

What is the month with the shortest days?

With an average of 9h and 18min of daylight, December has the shortest days of the year in New Wilmington.

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

The average day length in December is 9h and 16min.

When are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:27 am and sunset at 4:53 pm. On the last day of the month, sunrise is at 7:46 am and sunset at 5:02 pm EST.

How many hours of sunshine does New Wilmington have in December?

The average sunshine duration in December is 3h.

What is the month with the lowest UV index?

The month with the lowest UV index is December, with an average maximum UV index of 1.

What is the UV index intensity in December?

In New Wilmington, the average daily maximum UV index in December is 1. A UV Index value of 2, and less, symbolizes a low health threat 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 Wilmington, PA

Average temperature in December - New Wilmington, PA
  • Average high temperature in December: 37.6°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 (60.8°F).
The coldest month (with the lowest average low temperature) is January (18.7°F).

Average pressure in December
New Wilmington, PA

Average pressure in December - New Wilmington, PA
  • Average pressure in December: 30.1"Hg

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in December
New Wilmington, PA

Average wind speed in December - New Wilmington, PA
  • Average wind speed in December: 7.6mph

The windiest month (with the highest average wind speed) is January (8.2mph).
The calmest month (with the lowest average wind speed) is July (5.1mph).

Average humidity in December
New Wilmington, PA

Average humidity in December - New Wilmington, PA
  • Average humidity in December: 86%

The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are April, May, July and August (78%).

Average rainfall in December
New Wilmington, PA

Average rainfall in December - New Wilmington, PA
  • Average rainfall in December: 2.72"

The wettest month (with the highest rainfall) is June (3.74").
The driest month (with the least rainfall) is November (2.28").

Average rainfall days in December
New Wilmington, PA

Average rainfall days in December - New Wilmington, PA
  • Average rainfall days in December: 13.5 days

The month with the highest number of rainy days is May (19.7 days).
The month with the least rainy days is January (10 days).

Average snowfall in December
New Wilmington, PA

Average snowfall in December - New Wilmington, PA
  • Average snowfall in December: 5.51"

The month with the highest snowfall is January (8.19").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
New Wilmington, PA

Average snowfall days in December - New Wilmington, PA
  • Average snowfall days in December: 15.5 days

The month with the highest number of snowfall days is January (19.8 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 Wilmington, PA

Average daylight in December / Average sunshine in December - New Wilmington, PA
  • 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: 3h and 0min

The months with the most sunshine are July and August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 2h and 36min).

Average sunshine days in December
New Wilmington, PA

Average sunshine days in December - New Wilmington, PA
  • Average sunshine days in December: 7.7 days

The month with the most sunshine days is September (12.8 days).
The month with the least sunshine days is February (6.3 days).

Average UV index in December
New Wilmington, PA

Average UV index in December - New Wilmington, PA
  • Average UV index in December: 1

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

Average cloud cover in December
New Wilmington, PA

Average cloud cover in December - New Wilmington, PA
  • Average cloud cover in December: 69

The month with the most cloud cover is January (Cloud cover 74).
The month with the least cloud cover is August (Cloud cover 35).

Average visibility in December
New Wilmington, PA

Average visibility in December - New Wilmington, PA
  • Average visibility in December: 4mi

The months with the highest visibility are March, April, May, June, July, August, September, October and November (5mi).
The months with the lowest visibility are January, February and December (4mi).

New Wilmington, Pennsylvania, USA

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