December weather forecast
McConnellsburg, PA

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Weather in December

The first month of the winter, December, is still a cold month in McConnellsburg, Pennsylvania, with an average temperature fluctuating between 40.8°F (4.9°C) and 28.9°F (-1.7°C).

Temperature

December's onset brings a reduction in the average high-temperature, from a cool 50.4°F (10.2°C) in November to a wintry 40.8°F (4.9°C). The average temperature in McConnellsburg drops to a freezing cold 28.9°F (-1.7°C) during the night in the month of December.

Humidity

The months with the highest humidity in McConnellsburg are February, May, October and December, with an average relative humidity of 79%.

Rainfall

In McConnellsburg, during December, the rain falls for 11.1 days and regularly aggregates up to 2.52" (64mm) of precipitation. In McConnellsburg, during the entire year, the rain falls for 170.5 days and collects up to 31.02" (788mm) of precipitation.

Snowfall

January through April, October through December are months with snowfall in McConnellsburg. In December, it is snowing for 5.9 days. Throughout December, 2.52" (64mm) of snow is accumulated. In McConnellsburg, during the entire year, snow falls for 33.6 days and aggregates up to 17.91" (455mm) of snow.

Daylight

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

Sunshine

The average sunshine in December in McConnellsburg, Pennsylvania, is 4.7h.

UV index

The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: The maximum UV index, 2 during December, leads to the following recommendations:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
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Frequently asked questions

How cold does it get in McConnellsburg in December?

During December, McConnellsburg experiences an average high-temperature of 40.8°F (4.9°C) and a low-temperature of 28.9°F (-1.7°C). The average heat index (a.k.a. 'real feel', 'feels like'), which combines relative humidity and air temperature, in August is calculated to be 87.8°F (31°C).

What is the most humid month in McConnellsburg?

February, May, October and December, with an average relative humidity of 79%, are most humid months.

What is the average humidity in December in McConnellsburg?

The average relative humidity in December in McConnellsburg is 79%.

How many days does it rain in December in McConnellsburg?

In McConnellsburg, in December, during 11.1 rainfall days, 2.52" (64mm) of precipitation is typically accumulated.

How many days does it snow in December in McConnellsburg?

In McConnellsburg, Pennsylvania, in December, during 5.9 snowfall days, 2.52" (64mm) of snow is typically accumulated.

What is the month with the shortest days in McConnellsburg?

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

How many hours of daylight does McConnellsburg have in December?

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

When is the sunrise / sunset in December in McConnellsburg?

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

How many hours of sunshine does McConnellsburg have in December?

The average sunshine duration in December in McConnellsburg, Pennsylvania, is 4.7h.

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

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

What is the UV index reading in December in McConnellsburg?

In McConnellsburg, Pennsylvania, the average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a minimal hazard to health 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
McConnellsburg, PA

Average temperature in December - McConnellsburg, PA
  • Average high temperature in December: 40.8°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (35.2°F).

  • Average low temperature in December: 28.9°F

The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (22.1°F).

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Average pressure in December
McConnellsburg, PA

Average pressure in December - McConnellsburg, 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
McConnellsburg, PA

Average wind speed in December - McConnellsburg, PA
  • Average wind speed in December: 6.8mph

The windiest month (with the highest average wind speed) is January (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).

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Average humidity in December
McConnellsburg, PA

Average humidity in December - McConnellsburg, PA
  • Average humidity in December: 79%

The months with the highest relative humidity are February, May, October and December (79%).
The months with the lowest relative humidity are April and July (75%).

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Average rainfall in December
McConnellsburg, PA

Average rainfall in December - McConnellsburg, PA
  • Average rainfall in December: 2.52"

The wettest month (with the highest rainfall) is May (3.19").
The driest month (with the least rainfall) is September (2.05").

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Average rainfall days in December
McConnellsburg, PA

Average rainfall days in December - McConnellsburg, PA
  • Average rainfall days in December: 11.1 days

The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is November (9.9 days).

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Average snowfall in December
McConnellsburg, PA

Average snowfall in December - McConnellsburg, PA
  • Average snowfall in December: 2.52"

The month with the highest snowfall is January (5.2").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in December
McConnellsburg, PA

Average snowfall days in December - McConnellsburg, PA
  • Average snowfall days in December: 5.9 days

The month with the highest number of snowfall days is January (9.9 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
McConnellsburg, PA

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

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).

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Average sunshine days in December
McConnellsburg, PA

Average sunshine days in December - McConnellsburg, PA
  • Average sunshine days in December: 15.1 days

The month with the most sunshine days is November (18 days).
The month with the least sunshine days is May (10.3 days).

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Average UV index in December
McConnellsburg, PA

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

The months with the highest UV index are May, June and July (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
McConnellsburg, PA

Average cloud cover in December - McConnellsburg, PA
  • Average cloud cover in December: 50

The months with the most cloud cover are January, February and December (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 31).

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Average visibility in December
McConnellsburg, PA

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

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

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McConnellsburg, Pennsylvania, USA

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