December weather forecast
Lee, PA

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Weather in December

December, the first month of the winter in Lee, is also a wintry month, with an average temperature fluctuating between 25.9°F (-3.4°C) and 36.9°F (2.7°C).

Temperature

During the transition into December, Lee observes a decrease in the average high-temperature, falling from a chilly 46.2°F (7.9°C) in November to a cold 36.9°F (2.7°C). During December, the average low-temperature is a subzero cold 25.9°F (-3.4°C).

Humidity

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

Rainfall

In December, the rain falls for 10.3 days. Throughout December, 2.2" (56mm) of precipitation is accumulated. Throughout the year, there are 162.5 rainfall days, and 30.35" (771mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Lee are January through May, October through December. In Lee, in December, during 7.8 snowfall days, 3.5" (89mm) of snow is typically accumulated. Throughout the year, there are 41.1 snowfall days, and 21.38" (543mm) 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 4:36 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 4:45 pm EST.

Sunshine

In Lee, the average sunshine in December is 3.8h.

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 low health risk from exposure to the Sun's UV radiation for the average person.
Note: In December, the UV index of 1 transforms into the following advice:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Experience reduced UV exposure by about half when donning a wide-brim hat. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in Lee in December?

The average high-temperature, in December, in Lee, is 36.9°F (2.7°C), while the average low-temperature is 25.9°F (-3.4°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines relative humidity and air temperature, in July is calculated to be 86°F (30°C).

What is the average humidity in December in Lee?

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

How many days does it rain in December in Lee?

In Lee, in December, it is raining for 10.3 days, with typically 2.2" (56mm) of accumulated precipitation.

How many days does it snow in December in Lee?

In Lee, during December, snow falls for 7.8 days and regularly aggregates up to 3.5" (89mm) of snow.

What is the month with the shortest days in Lee?

The month with the shortest days in Lee is December, with an average of 9h and 18min of daylight.

What is the average length of the day in December in Lee?

The average day length in December in Lee is 9h and 16min.

When is the sunrise / sunset in December in Lee?

On the first day of December in Lee, sunrise is at 7:10 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 4:45 pm EST.

How long on average sun shines in December in Lee?

The average sunshine duration in December in Lee, Pennsylvania, is 3.8h.

When is the lowest UV index in Lee?

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

How high is the UV index in December in Lee?

In Lee, Pennsylvania, the average daily maximum UV index in December is 1. A UV Index estimate of 2, and below, represents a low health threat from 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
Lee, PA

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

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (30.6°F).

  • Average low temperature in December: 25.9°F

The month with the highest average low temperature is July (59°F).
The coldest month (with the lowest average low temperature) is January (18.5°F).

Average pressure in December
Lee, PA

Average pressure in December - Lee, 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
Lee, PA

Average wind speed in December - Lee, 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 (5.1mph).

Average humidity in December
Lee, PA

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

The month with the highest relative humidity is February (84%).
The months with the lowest relative humidity are April and July (78%).

Average rainfall in December
Lee, PA

Average rainfall in December - Lee, PA
  • Average rainfall in December: 2.2"

The wettest month (with the highest rainfall) is July (3.23").
The driest months (with the least rainfall) are January and September (2.09").

Average rainfall days in December
Lee, PA

Average rainfall days in December - Lee, PA
  • Average rainfall days in December: 10.3 days

The month with the highest number of rainy days is May (19.1 days).
The month with the least rainy days is February (8.2 days).

Average snowfall in December
Lee, PA

Average snowfall in December - Lee, PA
  • Average snowfall in December: 3.5"

The month with the highest snowfall is February (6.42").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Lee, PA

Average snowfall days in December - Lee, PA
  • Average snowfall days in December: 7.8 days

The month with the highest number of snowfall days is January (11.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Lee, 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 6min).
The months with the least sunshine are January and February (Average sunshine: 3h and 42min).

Average sunshine days in December
Lee, PA

Average sunshine days in December - Lee, PA
  • Average sunshine days in December: 15.4 days

The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is July (9.1 days).

Average UV index in December
Lee, PA

Average UV index in December - Lee, 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
Lee, PA

Average cloud cover in December - Lee, 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 37).

Average visibility in December
Lee, PA

Average visibility in December - Lee, 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).

Lee, Pennsylvania, USA

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