December weather forecast
Harrisonville, PA

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Weather in December

December, the first month of the winter in Harrisonville, is also a wintry month, with an average temperature fluctuating between 38.5°F (3.6°C) and 27.3°F (-2.6°C).

Temperature

A shift in the average high-temperature occurs in December, reducing from a frosty 48°F (8.9°C) in November to a cold 38.5°F (3.6°C). Throughout the nights in December, an average low-temperature of 27.3°F (-2.6°C) is noted in Harrisonville, Pennsylvania.

Humidity

In Harrisonville, the average relative humidity in December is 81%.

Rainfall

In Harrisonville, in December, it is raining for 10.2 days, with typically 1.57" (40mm) of accumulated precipitation. In Harrisonville, during the entire year, the rain falls for 146.6 days and collects up to 19.84" (504mm) of precipitation.

Snowfall

January through April, October through December are months with snowfall. In Harrisonville, during December, snow falls for 6.7 days and regularly aggregates up to 2.2" (56mm) of snow. Throughout the year, there are 37.4 snowfall days, and 14.61" (371mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 9h and 24min of daylight.
On the first day of December in Harrisonville, sunrise is at 7:15 am and sunset at 4:47 pm. On the last day of the month, sunrise is at 7:33 am and sunset at 4:57 pm EST.

Sunshine

In Harrisonville, the average sunshine in December is 4.4h.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Harrisonville. A UV Index of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: The daily maximum UV index of 2 in December interprets into the following advice:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
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Frequently asked questions

Is December cold in Harrisonville?

The high-temperature, in December, in Harrisonville, records 38.5°F (3.6°C), while the low-temperature is 27.3°F (-2.6°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which represents the influence of relative humidity on air temperature, in July is calculated to be 89.6°F (32°C).

What is the average humidity in December in Harrisonville?

The average relative humidity in December in Harrisonville is 81%.

How many days does it rain in December in Harrisonville?

In December, the rain falls for 10.2 days. Throughout December, 1.57" (40mm) of precipitation is accumulated.

How much does it snow in Harrisonville in December?

In Harrisonville, Pennsylvania, during December, snow falls for 6.7 days and regularly aggregates up to 2.2" (56mm) of snow.

What is the month with the shortest days in Harrisonville?

With an average of 9h and 24min of daylight, December has the shortest days of the year.

What is the average length of the day in December in Harrisonville?

In December, the average day length is 9h and 23min.

When is the sunrise / sunset in December in Harrisonville?

On the first day of December in Harrisonville, Pennsylvania, sunrise is at 7:15 am and sunset at 4:47 pm. On the last day of the month, sunrise is at 7:33 am and sunset at 4:57 pm EST.

How many hours of sunshine does Harrisonville have in December?

In December, the average sunshine duration is 4.4h.

What are the months with the lowest UV index in Harrisonville?

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Harrisonville, Pennsylvania.

What is the UV index reading in December in Harrisonville?

The average daily maximum UV index in December in Harrisonville, Pennsylvania, is 2. A UV Index estimate of 2, and below, represents a low health risk 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
Harrisonville, PA

Average temperature in December - Harrisonville, PA
  • Average high temperature in December: 38.5°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 (32.5°F).

  • Average low temperature in December: 27.3°F

The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).

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Average pressure in December
Harrisonville, PA

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

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

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Average wind speed in December
Harrisonville, PA

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

The windiest month (with the highest average wind speed) is January (8.3mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).

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Average humidity in December
Harrisonville, PA

Average humidity in December - Harrisonville, PA
  • Average humidity in December: 81%

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

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Average rainfall in December
Harrisonville, PA

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

The wettest month (with the highest rainfall) is May (2.36").
The driest month (with the least rainfall) is November (1.18").

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Average rainfall days in December
Harrisonville, PA

Average rainfall days in December - Harrisonville, 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 (7.5 days).

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Average snowfall in December
Harrisonville, PA

Average snowfall in December - Harrisonville, PA
  • Average snowfall in December: 2.2"

The month with the highest snowfall is February (3.74").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in December
Harrisonville, PA

Average snowfall days in December - Harrisonville, PA
  • Average snowfall days in December: 6.7 days

The month with the highest number of snowfall days is January (10.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Harrisonville, 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 24min).

  • Average sunshine in December: 4h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).

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Average sunshine days in December
Harrisonville, PA

Average sunshine days in December - Harrisonville, PA
  • Average sunshine days in December: 16.8 days

The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is May (11 days).

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Average UV index in December
Harrisonville, PA

Average UV index in December - Harrisonville, PA
  • Average UV index in December: 2

The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

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Average cloud cover in December
Harrisonville, PA

Average cloud cover in December - Harrisonville, PA
  • Average cloud cover in December: 54

The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is July (Cloud cover 33).

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Average visibility in December
Harrisonville, PA

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

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

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Harrisonville, Pennsylvania, USA

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