December weather forecast
Oliver Mills, PA

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Weather in December

The first month of the winter, December, is still a cold month in Oliver Mills, Pennsylvania, with an average temperature fluctuating between 36.9°F (2.7°C) and 25.9°F (-3.4°C).

Temperature

In December, the average high-temperature decreases from a chilly 46.2°F (7.9°C) in November to an icy 36.9°F (2.7°C). Oliver Mills's nighttime temperature during December is consistently averaged at a freezing cold 25.9°F (-3.4°C).

Humidity

The months with the highest humidity are February and December, with an average relative humidity of 84%.

Rainfall

In Oliver Mills, during December, the rain falls for 11.3 days and regularly aggregates up to 0.98" (25mm) of precipitation. Throughout the year, there are 142.7 rainfall days, and 13.19" (335mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In December, it is snowing for 10 days. Throughout December, 1.93" (49mm) of snow is accumulated. Throughout the year, there are 49.9 snowfall days, and 9.92" (252mm) 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 December, sunrise is at 7:10 am and sunset at 4:35 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 4:44 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 minimal health vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: In December, a daily UV index of 1 turns into the following recommendations:
Although prolonged sun exposure does not typically bother most people, children, babies, and those with sensitive skin should always have protection. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.

Frequently asked questions

How cold is it in December?

In Oliver Mills, in December, the average high-temperature is 36.9°F (2.7°C), and the average low-temperature is 25.9°F (-3.4°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 estimated at 86°F (30°C).

What is the most humid month?

The months with the highest humidity are February and December, with an average relative humidity of 84%.

What is the average humidity in December in Oliver Mills?

In December, the average relative humidity is 84%.

How much does it rain in December?

In Oliver Mills, Pennsylvania, in December, it is raining for 11.3 days, with typically 0.98" (25mm) of accumulated precipitation.

How many days does it snow in December?

In Oliver Mills, in December, snow falls for 10 days, with typically accumulated 1.93" (49mm) of snow.

What is the month with the shortest days?

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

What is the average length of the day in December?

In December, the average day length is 9h and 16min.

When are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:10 am and sunset at 4:35 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 4:44 pm EST.

How many hours of sunshine does Oliver Mills have in December?

In Oliver Mills, the average sunshine duration in December is 3.9h.

When is the lowest UV index?

December is the month with the lowest UV index in Oliver Mills, with an average maximum UV index of 1.

What is the UV index reading in December?

In December, the average daily maximum UV index is 1. A UV Index estimate of 2, and below, represents 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
Oliver Mills, PA

Average temperature in December - Oliver Mills, PA
  • Average high temperature in December: 36.9°F

The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (30.6°F).

  • Average low temperature in December: 25.9°F

The month with the highest average low temperature is July (59.2°F).
The coldest month (with the lowest average low temperature) is January (18.7°F).

Average pressure in December
Oliver Mills, PA

Average pressure in December - Oliver Mills, 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
Oliver Mills, PA

Average wind speed in December - Oliver Mills, PA
  • Average wind speed in December: 7.6mph

The windiest months (with the highest average wind speed) are March and April (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

Average humidity in December
Oliver Mills, PA

Average humidity in December - Oliver Mills, PA
  • Average humidity in December: 84%

The months with the highest relative humidity are February and December (84%).
The month with the lowest relative humidity is April (77%).

Average rainfall in December
Oliver Mills, PA

Average rainfall in December - Oliver Mills, PA
  • Average rainfall in December: 0.98"

The wettest month (with the highest rainfall) is July (1.5").
The driest month (with the least rainfall) is September (0.71").

Average rainfall days in December
Oliver Mills, PA

Average rainfall days in December - Oliver Mills, PA
  • Average rainfall days in December: 11.3 days

The month with the highest number of rainy days is May (15.4 days).
The month with the least rainy days is January (8.3 days).

Average snowfall in December
Oliver Mills, PA

Average snowfall in December - Oliver Mills, PA
  • Average snowfall in December: 1.93"

The month with the highest snowfall is February (2.83").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Oliver Mills, PA

Average snowfall days in December - Oliver Mills, PA
  • Average snowfall days in December: 10 days

The month with the highest number of snowfall days is January (13.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Oliver Mills, PA

Average daylight in December / Average sunshine in December - Oliver Mills, 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: 10h and 12min).
The months with the least sunshine are January and February (Average sunshine: 3h and 42min).

Average sunshine days in December
Oliver Mills, PA

Average sunshine days in December - Oliver Mills, PA
  • Average sunshine days in December: 13.7 days

The month with the most sunshine days is November (16.9 days).
The month with the least sunshine days is February (11.6 days).

Average UV index in December
Oliver Mills, PA

Average UV index in December - Oliver Mills, 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
Oliver Mills, PA

Average cloud cover in December - Oliver Mills, PA
  • Average cloud cover in December: 60

The month with the most cloud cover is February (Cloud cover 61).
The month with the least cloud cover is July (Cloud cover 36).

Average visibility in December
Oliver Mills, PA

Average visibility in December - Oliver Mills, 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).

Oliver Mills, Pennsylvania, USA

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