December weather forecast
Clarence, PA

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Weather in December

The first month of the winter, December, is also a wintry month in Clarence, Pennsylvania, with an average temperature varying between 37°F (2.8°C) and 26.4°F (-3.1°C).

Temperature

December comes with a drop in the average high-temperature, falling from November's frosty 46.9°F (8.3°C) to a wintry 37°F (2.8°C). An average low-temperature of 26.4°F (-3.1°C) is recorded in the month of December in Clarence.

Humidity

The months with the highest humidity are February and December, with an average relative humidity of 84%.

Rainfall

In Clarence, in December, it is raining for 11.5 days, with typically 1.81" (46mm) of accumulated precipitation. In Clarence, Pennsylvania, during the entire year, the rain falls for 158.7 days and collects up to 23.74" (603mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In December, in Clarence, it is snowing for 9 days. Throughout December, 2.99" (76mm) of snow is accumulated. In Clarence, during the entire year, snow falls for 47.4 days and aggregates up to 17.13" (435mm) of snow.

Daylight

With an average of 9h and 18min of daylight, December has the shortest days of the year in Clarence.
On the first day of the month, sunrise is at 7:18 am and sunset at 4:44 pm. On the last day of December, in Clarence, sunrise is at 7:36 am and sunset at 4:53 pm EST.

Sunshine

The average sunshine in December is 3.6h.

UV index

The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for the average person.
Note: A maximum daily UV index of 1 during December morphs into the following directions:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
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Frequently asked questions

How cold is it in Clarence in December?

December temperatures vary between a high-temperature of 37°F (2.8°C) and a low-temperature of 26.4°F (-3.1°C). In July, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines relative humidity and air temperature, is computed to be 89.6°F (32°C).

What are the most humid months in Clarence?

February and December, with an average relative humidity of 84%, are most humid months.

What is the average humidity in December in Clarence?

The average relative humidity in December in Clarence is 84%.

How many days does it rain in December in Clarence?

In Clarence, Pennsylvania, in December, it is raining for 11.5 days, with typically 1.81" (46mm) of accumulated precipitation.

How many days does it snow in December in Clarence?

In Clarence, during December, snow falls for 9 days and regularly aggregates up to 2.99" (76mm) of snow.

What is the month with the shortest days in Clarence?

December has the shortest days of the year in Clarence, Pennsylvania, with an average of 9h and 18min of daylight.

How many hours of daylight does Clarence have in December?

The average day length in December in Clarence, Pennsylvania, is 9h and 17min.

When is the sunrise / sunset in December in Clarence?

In December, on the first day of the month, sunrise is at 7:18 am and sunset at 4:44 pm. On the last day of the month, in Clarence, Pennsylvania, sunrise is at 7:36 am and sunset at 4:53 pm EST.

How many hours of sunshine does Clarence have in December?

The average sunshine duration in December in Clarence, Pennsylvania, is 3.6h.

When is the lowest UV index in Clarence?

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

What is the UV index reading in December in Clarence?

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

Average temperature in December - Clarence, PA
  • Average high temperature in December: 37°F

The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (31.5°F).

  • Average low temperature in December: 26.4°F

The month with the highest average low temperature is July (59°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).

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Average pressure in December
Clarence, PA

Average pressure in December - Clarence, PA
  • Average pressure in December: 30.1"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).

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Average wind speed in December
Clarence, PA

Average wind speed in December - Clarence, PA
  • Average wind speed in December: 7.3mph

The windiest month (with the highest average wind speed) is January (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

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Average humidity in December
Clarence, PA

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

The months with the highest relative humidity are February and December (84%).
The month with the lowest relative humidity is July (76%).

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Average rainfall in December
Clarence, PA

Average rainfall in December - Clarence, PA
  • Average rainfall in December: 1.81"

The wettest month (with the highest rainfall) is May (2.76").
The driest month (with the least rainfall) is November (1.5").

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Average rainfall days in December
Clarence, PA

Average rainfall days in December - Clarence, PA
  • Average rainfall days in December: 11.5 days

The month with the highest number of rainy days is May (18.4 days).
The months with the least rainy days are January and February (8.3 days).

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Average snowfall in December
Clarence, PA

Average snowfall in December - Clarence, PA
  • Average snowfall in December: 2.99"

The month with the highest snowfall is February (4.57").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Clarence, PA

Average snowfall days in December - Clarence, PA
  • Average snowfall days in December: 9 days

The month with the highest number of snowfall days is January (13.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Clarence, 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 4min

The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).

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Average sunshine days in December
Clarence, PA

Average sunshine days in December - Clarence, PA
  • Average sunshine days in December: 14.2 days

The month with the most sunshine days is November (16.1 days).
The month with the least sunshine days is May (10.4 days).

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Average UV index in December
Clarence, PA

Average UV index in December - Clarence, 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).

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Average cloud cover in December
Clarence, PA

Average cloud cover in December - Clarence, PA
  • Average cloud cover in December: 62

The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is July (Cloud cover 36).

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Average visibility in December
Clarence, PA

Average visibility in December - Clarence, PA
  • 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).

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Clarence, Pennsylvania, USA

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