December weather forecast
Windham, PA

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Weather in December

The first month of the winter, December, is also an icy month in Windham, Pennsylvania, with an average temperature fluctuating between 34.5°F (1.4°C) and 24.8°F (-4°C).

Temperature

Windham's transition into December involves a shift in temperature, receding from a chilly 44.6°F (7°C) in November to an icy 34.5°F (1.4°C). Windham's temperature tends to fall to an average low of 24.8°F (-4°C) during the nights of December.

Humidity

The average relative humidity in December in Windham is 85%.

Rainfall

In Windham, in December, during 11.5 rainfall days, 2.44" (62mm) of precipitation is typically accumulated. In Windham, during the entire year, the rain falls for 171.9 days and collects up to 32.09" (815mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In December, it is snowing for 15.4 days. Throughout December, 5.43" (138mm) of snow is accumulated. In Windham, during the entire year, snow falls for 79.3 days and aggregates up to 33.46" (850mm) of snow.

Daylight

With an average of 9h and 12min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 7:14 am and sunset at 4:34 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 4:43 pm EST.

Sunshine

In December, the average sunshine is 3.1h.

UV index

The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum daily UV index of 1 during December translates into the following directions:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. When the Sun is at its strongest around midday, find shade and limit exposure. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is December in Windham?

During December, Windham experiences an average high-temperature of 34.5°F (1.4°C) and a low-temperature of 24.8°F (-4°C).

What is the average humidity in December in Windham?

The average relative humidity in December in Windham, Pennsylvania, is 85%.

How much does it rain in Windham in December?

In Windham, during December, the rain falls for 11.5 days and regularly aggregates up to 2.44" (62mm) of precipitation.

How much does it snow in Windham in December?

In Windham, during December, snow falls for 15.4 days and regularly aggregates up to 5.43" (138mm) of snow.

What is the month with the shortest days in Windham?

December has the shortest days of the year, with an average of 9h and 12min of daylight.

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

In Windham, the average day length in December is 9h and 11min.

What time are sunrise and sunset in December in Windham?

On the first day of December, sunrise is at 7:14 am and sunset at 4:34 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 4:43 pm EST.

How long on average sun shines in December in Windham?

The average sunshine duration in December in Windham is 3.1h.

What are the months with the lowest UV index in Windham?

The months with the lowest UV index in Windham are January and December, with an average maximum UV index of 1.

How high is the UV index in December in Windham?

The average daily maximum UV index in December in Windham is 1. A UV Index estimate of 2, and below, represents a minimal hazard to health 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
Windham, PA

Average temperature in December - Windham, PA
  • Average high temperature in December: 34.5°F

The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (28.4°F).

  • Average low temperature in December: 24.8°F

The month with the highest average low temperature is July (57.4°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).

Average pressure in December
Windham, PA

Average pressure in December - Windham, PA
  • Average pressure in December: 30.08"Hg

The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in December
Windham, PA

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

The windiest month (with the highest average wind speed) is January (9mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

Average humidity in December
Windham, PA

Average humidity in December - Windham, PA
  • Average humidity in December: 85%

The month with the highest relative humidity is February (86%).
The months with the lowest relative humidity are April, May, June and July (79%).

Average rainfall in December
Windham, PA

Average rainfall in December - Windham, PA
  • Average rainfall in December: 2.44"

The wettest month (with the highest rainfall) is May (3.15").
The driest month (with the least rainfall) is January (2.13").

Average rainfall days in December
Windham, PA

Average rainfall days in December - Windham, PA
  • Average rainfall days in December: 11.5 days

The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is January (8.9 days).

Average snowfall in December
Windham, PA

Average snowfall in December - Windham, PA
  • Average snowfall in December: 5.43"

The month with the highest snowfall is February (8.58").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Windham, PA

Average snowfall days in December - Windham, PA
  • Average snowfall days in December: 15.4 days

The month with the highest number of snowfall days is January (18.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Windham, PA
  • Average daylight in December: 9h and 1min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in December: 3h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 2h and 54min).

Average sunshine days in December
Windham, PA

Average sunshine days in December - Windham, PA
  • Average sunshine days in December: 8.5 days

The month with the most sunshine days is September (13.7 days).
The month with the least sunshine days is February (6 days).

Average UV index in December
Windham, PA

Average UV index in December - Windham, PA
  • Average UV index in December: 1

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).

Average cloud cover in December
Windham, PA

Average cloud cover in December - Windham, PA
  • Average cloud cover in December: 68

The month with the most cloud cover is February (Cloud cover 71).
The month with the least cloud cover is July (Cloud cover 37).

Average visibility in December
Windham, PA

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

The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (5mi).
The month with the lowest visibility is February (4mi).

Windham, Pennsylvania, USA

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