December weather forecast
McElhattan, PA

Weather in December

The first month of the winter, December, is also a wintry month in McElhattan, Pennsylvania, with an average temperature ranging between min 25.9°F (-3.4°C) and max 36.7°F (2.6°C).

Temperature

In McElhattan, Pennsylvania, the average high-temperature in December decreases from a chilly 46.2°F (7.9°C) in November to a wintry 36.7°F (2.6°C). In December, in McElhattan, the average low-temperature is 25.9°F (-3.4°C).

Humidity

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

Rainfall

In McElhattan, during December, the rain falls for 12.4 days and regularly aggregates up to 2.68" (68mm) of precipitation. Throughout the year, in McElhattan, there are 174.7 rainfall days, and 32.09" (815mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In McElhattan, during December, snow falls for 12.2 days and regularly aggregates up to 4.76" (121mm) of snow. In McElhattan, during the entire year, snow falls for 56.1 days and aggregates up to 24.84" (631mm) of snow.

Daylight

December has the shortest days of the year in McElhattan, with an average of 9h and 16min of daylight.
On the first day of the month, sunrise is at 7:15 am and sunset at 4:41 pm. On the last day of December, in McElhattan, sunrise is at 7:34 am and sunset at 4:50 pm EST.

Sunshine

The average sunshine in December is 3.4h.

UV index

With an average maximum UV index of 1, December is the month with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: The daily maximum UV index of 1 in December interpret into the following advice:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in December in McElhattan?

In December, the average high-temperature is 36.7°F (2.6°C), and the average low-temperature is 25.9°F (-3.4°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, in July is evaluated at 87.8°F (31°C).

What are the most humid months in McElhattan?

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

What is the average humidity in December in McElhattan?

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

How many days does it rain in December in McElhattan?

In December, the rain falls for 12.4 days. Throughout December, 2.68" (68mm) of precipitation is accumulated.

How much does it snow in McElhattan in December?

In McElhattan, in December, during 12.2 snowfall days, 4.76" (121mm) of snow is typically accumulated.

What is the month with the shortest days in McElhattan?

The month with the shortest days is December, with an average of 9h and 16min of daylight.

How many hours of daylight does McElhattan have in December?

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

When are sunrise and sunset in December in McElhattan?

In December, on the first day of the month, sunrise is at 7:15 am and sunset at 4:41 pm. On the last day of the month, in McElhattan, sunrise is at 7:34 am and sunset at 4:50 pm EST.

How long on average sun shines in December in McElhattan?

In December, the average sunshine duration in McElhattan, Pennsylvania, is 3.4h.

What is the month with the lowest UV index in McElhattan?

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

How high is the UV index in December in McElhattan?

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

Average temperature in December - McElhattan, PA
  • Average high temperature in December: 36.7°F

The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (30.9°F).

  • Average low temperature in December: 25.9°F

The month with the highest average low temperature is July (58.6°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).

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Average pressure in December
McElhattan, PA

Average pressure in December - McElhattan, PA
  • Average pressure in December: 30.09"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
McElhattan, PA

Average wind speed in December - McElhattan, PA
  • Average wind speed in December: 7mph

The windiest months (with the highest average wind speed) are January and April (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

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Average humidity in December
McElhattan, PA

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

The months with the highest relative humidity are February and December (84%).
The months with the lowest relative humidity are April, June and July (77%).

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Average rainfall in December
McElhattan, PA

Average rainfall in December - McElhattan, PA
  • Average rainfall in December: 2.68"

The wettest month (with the highest rainfall) is April (3.54").
The driest month (with the least rainfall) is November (2.09").

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Average rainfall days in December
McElhattan, PA

Average rainfall days in December - McElhattan, PA
  • Average rainfall days in December: 12.4 days

The month with the highest number of rainy days is May (18.7 days).
The month with the least rainy days is February (10.3 days).

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Average snowfall in December
McElhattan, PA

Average snowfall in December - McElhattan, PA
  • Average snowfall in December: 4.76"

The month with the highest snowfall is February (7.13").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
McElhattan, PA

Average snowfall days in December - McElhattan, PA
  • Average snowfall days in December: 12.2 days

The month with the highest number of snowfall days is January (15.4 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
McElhattan, PA

Average daylight in December / Average sunshine in December - McElhattan, PA
  • Average daylight in December: 9h and 16min

The month with the longest days is June (Average daylight: 15h and 5min).
The month with the shortest days is December (Average daylight: 9h and 16min).

  • Average sunshine in December: 3h and 24min

The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).

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Average sunshine days in December
McElhattan, PA

Average sunshine days in December - McElhattan, PA
  • Average sunshine days in December: 10.3 days

The month with the most sunshine days is September (15.5 days).
The month with the least sunshine days is February (8.8 days).

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Average UV index in December
McElhattan, PA

Average UV index in December - McElhattan, 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).

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Average cloud cover in December
McElhattan, PA

Average cloud cover in December - McElhattan, PA
  • Average cloud cover in December: 64

The months with the most cloud cover are January and December (Cloud cover 64).
The month with the least cloud cover is July (Cloud cover 37).

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Average visibility in December
McElhattan, PA

Average visibility in December - McElhattan, PA
  • Average visibility in December: 4mi

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

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