December weather forecast
Clarington, PA

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Weather in December

The first month of the winter, December, is still a cold month in Clarington, Pennsylvania, with an average temperature ranging between max 36.5°F (2.5°C) and min 25.5°F (-3.6°C).

Temperature

In Clarington, entering December brings a temperature decrement, reducing from November's frosty 45.7°F (7.6°C) to a cold 36.5°F (2.5°C). Clarington's temperature in December lowers to a consistent average of 25.5°F (-3.6°C) during the nights.

Humidity

The average relative humidity in December is 86%.

Rainfall

In Clarington, during December, the rain falls for 10.2 days and regularly aggregates up to 1.61" (41mm) of precipitation. In Clarington, during the entire year, the rain falls for 150.5 days and collects up to 22.05" (560mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In Clarington, in December, during 13.5 snowfall days, 3.74" (95mm) of snow is typically accumulated. In Clarington, during the entire year, snow falls for 72.4 days and aggregates up to 22.28" (566mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 18min of daylight.
On the first day of December, sunrise is at 7:23 am and sunset at 4:47 pm. On the last day of the month, sunrise is at 7:42 am and sunset at 4:57 pm EST.

Sunshine

In Clarington, the average sunshine in December is 2.7h.

UV index

The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for the average person.
Note: In December, the maximum UV index of 1 transforms into these recommendations:
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. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.

Frequently asked questions

How cold is it in December?

In Clarington, 36.5°F (2.5°C) is the average high-temperature and 25.5°F (-3.6°C) is the average low-temperature during December. In July, the average heat index (a.k.a. 'feels like', 'real feel'), which factors the actual air temperature with the relative humidity, is evaluated at 86°F (30°C).

What is the average humidity in December?

The average relative humidity in December is 86%.

How much does it rain in December?

In Clarington, during December, the rain falls for 10.2 days and regularly aggregates up to 1.61" (41mm) of precipitation.

How much does it snow in December?

In Clarington, Pennsylvania, during December, snow falls for 13.5 days and regularly aggregates up to 3.74" (95mm) of snow.

What is the month with the shortest days in Clarington?

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

How many hours of daylight does Clarington have in December?

In December, the average day length is 9h and 15min.

What time are sunrise and sunset in December?

On the first day of December, sunrise is at 7:23 am and sunset at 4:47 pm. On the last day of the month, sunrise is at 7:42 am and sunset at 4:57 pm EST.

How long on average sun shines in December?

In December, the average sunshine duration is 2.7h.

When is the lowest UV index?

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

What is the UV index intensity in December in Clarington?

In December, the average daily maximum UV index is 1. A UV Index of 2, and less, symbolizes a minimal hazard to health 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
Clarington, PA

Average temperature in December - Clarington, PA
  • Average high temperature in December: 36.5°F

The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (30.2°F).

  • Average low temperature in December: 25.5°F

The month with the highest average low temperature is July (58.8°F).
The coldest month (with the lowest average low temperature) is January (17.8°F).

Average pressure in December
Clarington, PA

Average pressure in December - Clarington, 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
Clarington, PA

Average wind speed in December - Clarington, PA
  • Average wind speed in December: 8.3mph

The windiest month (with the highest average wind speed) is January (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

Average humidity in December
Clarington, PA

Average humidity in December - Clarington, PA
  • Average humidity in December: 86%

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

Average rainfall in December
Clarington, PA

Average rainfall in December - Clarington, PA
  • Average rainfall in December: 1.61"

The wettest month (with the highest rainfall) is April (2.56").
The driest month (with the least rainfall) is November (1.26").

Average rainfall days in December
Clarington, PA

Average rainfall days in December - Clarington, PA
  • Average rainfall days in December: 10.2 days

The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (7.2 days).

Average snowfall in December
Clarington, PA

Average snowfall in December - Clarington, PA
  • Average snowfall in December: 3.74"

The month with the highest snowfall is February (5.51").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Clarington, PA

Average snowfall days in December - Clarington, PA
  • Average snowfall days in December: 13.5 days

The month with the highest number of snowfall days is January (18 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Clarington, PA

Average daylight in December / Average sunshine in December - Clarington, 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: 2h and 4min

The months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).

Average sunshine days in December
Clarington, PA

Average sunshine days in December - Clarington, PA
  • Average sunshine days in December: 11.4 days

The month with the most sunshine days is November (15.3 days).
The month with the least sunshine days is February (8.1 days).

Average UV index in December
Clarington, PA

Average UV index in December - Clarington, PA
  • Average UV index in December: 1

The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).

Average cloud cover in December
Clarington, PA

Average cloud cover in December - Clarington, PA
  • Average cloud cover in December: 72

The month with the most cloud cover is January (Cloud cover 76).
The months with the least cloud cover are July and August (Cloud cover 39).

Average visibility in December
Clarington, PA

Average visibility in December - Clarington, PA
  • Average visibility in December: 5mi

The month with the highest visibility is April (6mi).
The month with the lowest visibility is February (4mi).

Clarington, Pennsylvania, USA

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