December weather forecast
Bowmanstown, PA

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Weather in December

December, the first month of the winter in Bowmanstown, is also an icy month, with an average temperature fluctuating between 27.5°F (-2.5°C) and 38.3°F (3.5°C).

Temperature

Bowmanstown's progression into December involves a drop in the average high-temperature, receding from a frosty 48.2°F (9°C) in November to a cold 38.3°F (3.5°C). The average low-temperature, in December, is a freezing cold 27.5°F (-2.5°C).

Humidity

In December, the average relative humidity is 82%.

Rainfall

In Bowmanstown, in December, it is raining for 11.6 days, with typically 2.48" (63mm) of accumulated precipitation. Throughout the year, there are 155.1 rainfall days, and 29.45" (748mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. In Bowmanstown, in December, snow falls for 4.6 days, with typically accumulated 2.6" (66mm) of snow. Throughout the year, there are 34 snowfall days, and 16.73" (425mm) of snow is accumulated.

Daylight

December has the shortest days of the year, with an average of 9h and 18min of daylight.
On the first day of the month, sunrise is at 7:08 am and sunset at 4:35 pm. On the last day of December, in Bowmanstown, sunrise is at 7:26 am and sunset at 4:45 pm EST.

Sunshine

In Bowmanstown, the average sunshine in December is 4.5h.

UV index

December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: An average UV index of 1 in December transforms into this advice:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.

Frequently asked questions

Is it cold during December?

In December, in Bowmanstown, the average high-temperature is 38.3°F (3.5°C), and the average low-temperature is 27.5°F (-2.5°C). In July, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which factors the actual air temperature with the relative humidity, is computed to be 87.8°F (31°C).

What is the average humidity in December?

The average relative humidity in December is 82%.

How many days does it rain in December?

In Bowmanstown, in December, it is raining for 11.6 days, with typically 2.48" (63mm) of accumulated precipitation.

How much does it snow in December?

In Bowmanstown, in December, during 4.6 snowfall days, 2.6" (66mm) of snow is typically accumulated.

What is the month with the shortest days?

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

What is the average length of the day in December?

The average day length in December is 9h and 19min.

What time are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:08 am and sunset at 4:35 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 4:45 pm EST.

How long on average sun shines in December?

In December, the average sunshine duration is 4.5h.

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 of 2, and less, symbolizes a low health risk 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
Bowmanstown, PA

Average temperature in December - Bowmanstown, PA
  • Average high temperature in December: 38.3°F

The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (32.5°F).

  • Average low temperature in December: 27.5°F

The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).

Average pressure in December
Bowmanstown, PA

Average pressure in December - Bowmanstown, 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
Bowmanstown, PA

Average wind speed in December - Bowmanstown, PA
  • Average wind speed in December: 7.7mph

The windiest month (with the highest average wind speed) is March (8.3mph).
The calmest month (with the lowest average wind speed) is August (5mph).

Average humidity in December
Bowmanstown, PA

Average humidity in December - Bowmanstown, PA
  • Average humidity in December: 82%

The month with the highest relative humidity is February (83%).
The months with the lowest relative humidity are April and July (77%).

Average rainfall in December
Bowmanstown, PA

Average rainfall in December - Bowmanstown, PA
  • Average rainfall in December: 2.48"

The wettest month (with the highest rainfall) is July (3.03").
The driest month (with the least rainfall) is September (1.77").

Average rainfall days in December
Bowmanstown, PA

Average rainfall days in December - Bowmanstown, PA
  • Average rainfall days in December: 11.6 days

The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (7.6 days).

Average snowfall in December
Bowmanstown, PA

Average snowfall in December - Bowmanstown, PA
  • Average snowfall in December: 2.6"

The months with the highest snowfall are January and March (4.41").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Bowmanstown, PA

Average snowfall days in December - Bowmanstown, PA
  • Average snowfall days in December: 4.6 days

The month with the highest number of snowfall days is February (9.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Bowmanstown, 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: 4h and 3min

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

Average sunshine days in December
Bowmanstown, PA

Average sunshine days in December - Bowmanstown, PA
  • Average sunshine days in December: 16.9 days

The month with the most sunshine days is November (17.6 days).
The month with the least sunshine days is May (11.3 days).

Average UV index in December
Bowmanstown, PA

Average UV index in December - Bowmanstown, 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).

Average cloud cover in December
Bowmanstown, PA

Average cloud cover in December - Bowmanstown, PA
  • Average cloud cover in December: 52

The month with the most cloud cover is February (Cloud cover 54).
The month with the least cloud cover is July (Cloud cover 35).

Average visibility in December
Bowmanstown, PA

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

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

Bowmanstown, Pennsylvania, USA

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