December weather forecast
McAdoo, PA

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Weather in December

The first month of the winter, December, is also a wintry month in McAdoo, Pennsylvania, with an average temperature varying between 36.9°F (2.7°C) and 25.9°F (-3.4°C).

Temperature

As November shifts into December, a slight alteration in temperatures is observed, with average highs reducing from a chilly 46.4°F (8°C) to an icy 36.9°F (2.7°C). McAdoo's average low-temperature during December nights is observed to be a subzero cold 25.9°F (-3.4°C).

Humidity

In McAdoo, the average relative humidity in December is 83%.

Rainfall

In McAdoo, in December, during 11 rainfall days, 2.83" (72mm) of precipitation is typically accumulated. In McAdoo, during the entire year, the rain falls for 163.3 days and collects up to 34.37" (873mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In McAdoo, Pennsylvania, in December, during 10.7 snowfall days, 4.57" (116mm) of snow is typically accumulated. Throughout the year, there are 53.8 snowfall days, and 33.66" (855mm) of snow is accumulated.

Daylight

With an average of 9h and 18min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 7:09 am and sunset at 4:36 pm. On the last day of December, sunrise is at 7:28 am and sunset at 4:46 pm EST.

Sunshine

The average sunshine in December is 3.9h.

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 low health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: A daily high UV index of 1 in December leads to these guidelines:
Although prolonged sun exposure does not typically bother most people, children, babies, and those with sensitive skin should always have protection. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.

Frequently asked questions

How cold is it in December?

An average high-temperature, in December, in McAdoo, is 36.9°F (2.7°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 factors the actual air temperature with the relative humidity, in July is computed to be 86°F (30°C).

What is the average humidity in December in McAdoo?

In McAdoo, the average relative humidity in December is 83%.

How much does it rain in December?

In December, the rain falls for 11 days. Throughout December, 2.83" (72mm) of precipitation is accumulated.

How much does it snow in December?

In McAdoo, in December, during 10.7 snowfall days, 4.57" (116mm) of snow is typically accumulated.

What is the month with the shortest days?

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

How many hours of daylight does McAdoo have in December?

In December, the average day length in McAdoo is 9h and 18min.

When are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:09 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 4:46 pm EST.

How many hours of sunshine does McAdoo have in December?

In December, the average sunshine duration is 3.9h.

What is the month with 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 McAdoo, the average daily maximum UV index in December is 1. A UV Index value of 2, and less, symbolizes a minimal hazard to health 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
McAdoo, PA

Average temperature in December - McAdoo, PA
  • Average high temperature in December: 36.9°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 (31.5°F).

  • Average low temperature in December: 25.9°F

The month with the highest average low temperature is July (59.9°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).

Average pressure in December
McAdoo, PA

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

Average wind speed in December - McAdoo, PA
  • Average wind speed in December: 7.9mph

The windiest month (with the highest average wind speed) is March (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).

Average humidity in December
McAdoo, PA

Average humidity in December - McAdoo, PA
  • Average humidity in December: 83%

The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is April (78%).

Average rainfall in December
McAdoo, PA

Average rainfall in December - McAdoo, PA
  • Average rainfall in December: 2.83"

The wettest month (with the highest rainfall) is May (3.43").
The driest month (with the least rainfall) is September (2.01").

Average rainfall days in December
McAdoo, PA

Average rainfall days in December - McAdoo, PA
  • Average rainfall days in December: 11 days

The month with the highest number of rainy days is May (19.8 days).
The month with the least rainy days is January (7.2 days).

Average snowfall in December
McAdoo, PA

Average snowfall in December - McAdoo, PA
  • Average snowfall in December: 4.57"

The months with the highest snowfall are January and February (7.64").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
McAdoo, PA

Average snowfall days in December - McAdoo, PA
  • Average snowfall days in December: 10.7 days

The month with the highest number of snowfall days is February (12.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - McAdoo, 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 5min

The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is February (Average sunshine: 3h and 42min).

Average sunshine days in December
McAdoo, PA

Average sunshine days in December - McAdoo, PA
  • Average sunshine days in December: 12.8 days

The month with the most sunshine days is November (16.8 days).
The month with the least sunshine days is May (8.7 days).

Average UV index in December
McAdoo, PA

Average UV index in December - McAdoo, 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
McAdoo, PA

Average cloud cover in December - McAdoo, PA
  • Average cloud cover in December: 60

The months with the most cloud cover are February and December (Cloud cover 60).
The month with the least cloud cover is July (Cloud cover 38).

Average visibility in December
McAdoo, PA

Average visibility in December - McAdoo, 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).

McAdoo, Pennsylvania, USA

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