December weather forecast
Waltersburg, PA

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Weather in December

The first month of the winter, December, is also an icy month in Waltersburg, Pennsylvania, with an average temperature varying between 28.6°F (-1.9°C) and 40.1°F (4.5°C).

Temperature

Onset of December witnesses a reduction in the average high-temperature, falling from a chilly 49.5°F (9.7°C) in November to a cold 40.1°F (4.5°C). Waltersburg, in December, observes a steady average low-temperature of 28.6°F (-1.9°C).

Humidity

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

Rainfall

In December, the rain falls for 8.4 days. Throughout December, 1.06" (27mm) of precipitation is accumulated. Throughout the year, there are 139.7 rainfall days, and 12.95" (329mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Waltersburg are January through May, October through December. In Waltersburg, in December, during 10.8 snowfall days, 2.28" (58mm) of snow is typically accumulated. In Waltersburg, during the entire year, snow falls for 53.8 days and aggregates up to 10.79" (274mm) 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 7:22 am and sunset at 4:54 pm. On the last day of December, sunrise is at 7:40 am and sunset at 5:04 pm EST.

Sunshine

The average sunshine in December is 3.6h.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for average individuals.
Note: In December, the maximum UV index of 2 translates into these guidelines:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Always opt for UVA and UVB-resistant sunglasses on radiant days. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.

Frequently asked questions

How cold is it in December?

In December, the average high-temperature and low-temperature are 40.1°F (4.5°C) and 28.6°F (-1.9°C) respectively. In August, the average heat index (a.k.a. 'feels like', 'real feel'), which represents the influence of relative humidity on air temperature, is calculated to be 86°F (30°C).

What is the average humidity in December?

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

How much does it rain in December?

In Waltersburg, in December, during 8.4 rainfall days, 1.06" (27mm) of precipitation is typically accumulated.

How much does it snow in December?

In Waltersburg, in December, snow falls for 10.8 days, with typically accumulated 2.28" (58mm) of snow.

What is the month with the shortest days in Waltersburg?

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

How many hours of daylight does Waltersburg have in December?

The average day length in December is 9h and 23min.

When is the sunrise / sunset in December?

In December, on the first day of the month, sunrise is at 7:22 am and sunset at 4:54 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 5:04 pm EST.

How many hours of sunshine does Waltersburg have in December?

In December, the average sunshine duration is 3.6h.

What are the months with the lowest UV index?

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

What is the UV index intensity in December?

In Waltersburg, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes 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
Waltersburg, PA

Average temperature in December - Waltersburg, PA
  • Average high temperature in December: 40.1°F

The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (34.2°F).

  • Average low temperature in December: 28.6°F

The month with the highest average low temperature is July (60.8°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).

Average pressure in December
Waltersburg, PA

Average pressure in December - Waltersburg, 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).

Average wind speed in December
Waltersburg, PA

Average wind speed in December - Waltersburg, PA
  • Average wind speed in December: 7.4mph

The windiest month (with the highest average wind speed) is January (8mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

Average humidity in December
Waltersburg, PA

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

The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are April, July and August (77%).

Average rainfall in December
Waltersburg, PA

Average rainfall in December - Waltersburg, PA
  • Average rainfall in December: 1.06"

The wettest month (with the highest rainfall) is May (1.57").
The driest month (with the least rainfall) is September (0.67").

Average rainfall days in December
Waltersburg, PA

Average rainfall days in December - Waltersburg, PA
  • Average rainfall days in December: 8.4 days

The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is February (7.7 days).

Average snowfall in December
Waltersburg, PA

Average snowfall in December - Waltersburg, PA
  • Average snowfall in December: 2.28"

The month with the highest snowfall is January (2.64").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Waltersburg, PA

Average snowfall days in December - Waltersburg, PA
  • Average snowfall days in December: 10.8 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).

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

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

The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).

Average sunshine days in December
Waltersburg, PA

Average sunshine days in December - Waltersburg, PA
  • Average sunshine days in December: 13.5 days

The month with the most sunshine days is November (17.9 days).
The month with the least sunshine days is January (9.7 days).

Average UV index in December
Waltersburg, PA

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

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in December
Waltersburg, PA

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

The month with the most cloud cover is January (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 35).

Average visibility in December
Waltersburg, PA

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

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

Waltersburg, Pennsylvania, USA

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