December weather forecast
Clinton, PA

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Weather in December

December, the first month of the winter in Clinton, is still a cold month, with temperature in the range of an average low of 28°F (-2.2°C) and an average high of 39°F (3.9°C).

Temperature

December's arrival correlates with a reduction in the average high-temperature, down from a frosty 48.7°F (9.3°C) in November to a cold 39°F (3.9°C). In December, the average low-temperature is a freezing cold 28°F (-2.2°C).

Humidity

In December, the average relative humidity is 84%.

Rainfall

In Clinton, in December, during 10.1 rainfall days, 1.57" (40mm) of precipitation is typically accumulated. Throughout the year, there are 154.8 rainfall days, and 21.22" (539mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In Clinton, in December, snow falls for 10.5 days, with typically accumulated 1.69" (43mm) of snow. Throughout the year, in Clinton, there are 49.9 snowfall days, and 10.12" (257mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 9h and 18min of daylight.
On the first day of December in Clinton, sunrise is at 7:25 am and sunset at 4:55 pm. On the last day of the month, sunrise is at 7:44 am and sunset at 5:04 pm EST.

Sunshine

The average sunshine in December is 3.2h.

UV index

The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: The daily maximum UV index of 1 in December interprets into the following advice:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. Around midday, solar radiation is most harmful; hence, exposure should be limited. 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. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Updated: Jun 29, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it cold during December?

In December, in Clinton, the average high-temperature is 39°F (3.9°C), and the average low-temperature is 28°F (-2.2°C). The average heat index (a.k.a. 'real feel', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in August is appraised at 87.8°F (31°C).

What is the average humidity in December?

The average relative humidity in December is 84%.

How many days does it rain in December?

In Clinton, in December, it is raining for 10.1 days, with typically 1.57" (40mm) of accumulated precipitation.

How many days does it snow in December?

In Clinton, in December, during 10.5 snowfall days, 1.69" (43mm) of snow is typically accumulated.

What is the month with the shortest days in Clinton?

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

What is the average length of the day in December?

The average day length in December is 9h and 20min.

What time are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:25 am and sunset at 4:55 pm. On the last day of the month, sunrise is at 7:44 am and sunset at 5:04 pm EST.

How many hours of sunshine does Clinton have in December?

In Clinton, the average sunshine duration in December is 3.2h.

When is the lowest UV index?

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

What is the UV index reading in December?

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

Average temperature in December - Clinton, PA
  • Average high temperature in December: 39°F

The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (32.9°F).

  • Average low temperature in December: 28°F

The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).

Average pressure in December
Clinton, PA

Average pressure in December - Clinton, PA
  • Average pressure in December: 30.11"Hg

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

Average wind speed in December
Clinton, PA

Average wind speed in December - Clinton, PA
  • Average wind speed in December: 7.4mph

The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

Average humidity in December
Clinton, PA

Average humidity in December - Clinton, PA
  • Average humidity in December: 84%

The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are July and August (75%).

Average rainfall in December
Clinton, PA

Average rainfall in December - Clinton, PA
  • Average rainfall in December: 1.57"

The wettest month (with the highest rainfall) is July (2.36").
The driest month (with the least rainfall) is January (1.22").

Average rainfall days in December
Clinton, PA

Average rainfall days in December - Clinton, PA
  • Average rainfall days in December: 10.1 days

The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (8.1 days).

Average snowfall in December
Clinton, PA

Average snowfall in December - Clinton, PA
  • Average snowfall in December: 1.69"

The month with the highest snowfall is February (2.76").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Clinton, PA

Average snowfall days in December - Clinton, PA
  • Average snowfall days in December: 10.5 days

The month with the highest number of snowfall days is January (14.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Clinton, PA
  • Average daylight in December: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in December: 3h and 1min

The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).

Average sunshine days in December
Clinton, PA

Average sunshine days in December - Clinton, PA
  • Average sunshine days in December: 12.9 days

The month with the most sunshine days is November (16.6 days).
The month with the least sunshine days is February (10.7 days).

Average UV index in December
Clinton, PA

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

The months with the highest UV index are May, June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).

Average cloud cover in December
Clinton, PA

Average cloud cover in December - Clinton, PA
  • Average cloud cover in December: 66

The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 34).

Average visibility in December
Clinton, PA

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

The months with the highest visibility are April, June, August and November (6mi).
The months with the lowest visibility are January, February, March, May, July, September, October and December (5mi).

Clinton, Pennsylvania, USA

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