December weather forecast
Smicksburg, PA

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Weather in December

The first month of the winter, December, is also a wintry month in Smicksburg, Pennsylvania, with an average temperature ranging between max 36.7°F (2.6°C) and min 25.7°F (-3.5°C).

Temperature

The decrease of average high-temperatures is mild in December, with a decline from a chilly 46.2°F (7.9°C) in November to a wintry 36.7°F (2.6°C). Throughout the month of December, the average temperature dips to a subzero cold 25.7°F (-3.5°C) at night.

Humidity

The average relative humidity in December is 86%.

Rainfall

In December, the rain falls for 10.5 days. Throughout December, 1.73" (44mm) of precipitation is accumulated. Throughout the year, there are 151.9 rainfall days, and 22.13" (562mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. In Smicksburg, Pennsylvania, during December, snow falls for 14.6 days and regularly aggregates up to 4.21" (107mm) of snow. Throughout the year, there are 71 snowfall days, and 22.32" (567mm) 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 7:22 am and sunset at 4:49 pm. On the last day of December, sunrise is at 7:41 am and sunset at 4:58 pm EST.

Sunshine

The average sunshine in December is 2.6h.

UV index

December is the month with the lowest UV index, 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: The daily high UV index of 1 during December translates into the following recommendations:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.

Frequently asked questions

How cold is it in December?

An average high-temperature, in December, in Smicksburg, is 36.7°F (2.6°C) and the average low-temperature is 25.7°F (-3.5°C). In July, the average heat index (a.k.a. 'real feel', 'feels like'), which represents the influence of relative humidity on air temperature, is appraised at 86°F (30°C).

What is the average humidity in December in Smicksburg?

The average relative humidity in December is 86%.

How many days does it rain in December?

In Smicksburg, in December, it is raining for 10.5 days, with typically 1.73" (44mm) of accumulated precipitation.

How many days does it snow in December?

In Smicksburg, during December, snow falls for 14.6 days and regularly aggregates up to 4.21" (107mm) of snow.

What is the month with the shortest days in Smicksburg?

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

How many hours of daylight does Smicksburg have in December?

The average day length in December is 9h and 18min.

When are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:22 am and sunset at 4:49 pm. On the last day of the month, sunrise is at 7:41 am and sunset at 4:58 pm EST.

How long on average sun shines in December?

In December, the average sunshine duration is 2.6h.

When is the lowest UV index?

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

What is the UV index intensity in December?

The average daily maximum UV index in December is 1. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation.
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
Smicksburg, PA

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

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (30.4°F).

  • Average low temperature in December: 25.7°F

The month with the highest average low temperature is July (58.8°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).

Average pressure in December
Smicksburg, PA

Average pressure in December - Smicksburg, 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).

Average wind speed in December
Smicksburg, PA

Average wind speed in December - Smicksburg, PA
  • Average wind speed in December: 8.6mph

The windiest month (with the highest average wind speed) is January (9.1mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

Average humidity in December
Smicksburg, PA

Average humidity in December - Smicksburg, PA
  • Average humidity in December: 86%

The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are June, July and August (78%).

Average rainfall in December
Smicksburg, PA

Average rainfall in December - Smicksburg, PA
  • Average rainfall in December: 1.73"

The wettest month (with the highest rainfall) is April (2.48").
The driest month (with the least rainfall) is November (1.26").

Average rainfall days in December
Smicksburg, PA

Average rainfall days in December - Smicksburg, PA
  • Average rainfall days in December: 10.5 days

The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is January (7.8 days).

Average snowfall in December
Smicksburg, PA

Average snowfall in December - Smicksburg, PA
  • Average snowfall in December: 4.21"

The month with the highest snowfall is January (5.63").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Smicksburg, PA

Average snowfall days in December - Smicksburg, PA
  • Average snowfall days in December: 14.6 days

The month with the highest number of snowfall days is January (18.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Smicksburg, 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: 2h and 4min

The months with the most sunshine are July and August (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).

Average sunshine days in December
Smicksburg, PA

Average sunshine days in December - Smicksburg, PA
  • Average sunshine days in December: 9.2 days

The month with the most sunshine days is September (15.3 days).
The month with the least sunshine days is February (7.8 days).

Average UV index in December
Smicksburg, PA

Average UV index in December - Smicksburg, 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
Smicksburg, PA

Average cloud cover in December - Smicksburg, PA
  • Average cloud cover in December: 72

The month with the most cloud cover is January (Cloud cover 75).
The month with the least cloud cover is August (Cloud cover 39).

Average visibility in December
Smicksburg, PA

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

The month with the highest visibility is April (6mi).
The months with the lowest visibility are January and February (4mi).

Smicksburg, Pennsylvania, USA

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