December weather forecast
Greenawalds, PA

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Weather in December

The first month of the winter, December, is also a wintry month in Greenawalds, Pennsylvania, with an average temperature varying between 28.9°F (-1.7°C) and 40.1°F (4.5°C).

Temperature

In December, the average high-temperature goes from a chilly 49.8°F (9.9°C) in November to an icy 40.1°F (4.5°C). In the month of December, Greenawalds experiences an average low-temperature of 28.9°F (-1.7°C).

Humidity

In December, the average relative humidity in Greenawalds is 81%.

Rainfall

In December, in Greenawalds, the rain falls for 9.2 days. Throughout December, 2.32" (59mm) of precipitation is accumulated. In Greenawalds, during the entire year, the rain falls for 145.1 days and collects up to 27.24" (692mm) of precipitation.

Snowfall

Months with snowfall in Greenawalds are January through May, October through December. In Greenawalds, during December, snow falls for 2.5 days and regularly aggregates up to 2.28" (58mm) of snow. In Greenawalds, during the entire year, snow falls for 20.4 days and aggregates up to 13.82" (351mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 18min of daylight.
On the first day of December, sunrise is at 7:07 am and sunset at 4:35 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 4:45 pm EST.

Sunshine

In December, the average sunshine is 4.7h.

UV index

The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the ordinary person.
Note: The UV index of 2 during December translates into the following guidance:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Updated: Aug 24, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is December cold?

An average high-temperature, in December, in Greenawalds, is 40.1°F (4.5°C) and the average low-temperature is 28.9°F (-1.7°C). In August, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines air temperature and relative humidity, is estimated at 86°F (30°C).

What is the average humidity in December?

The average relative humidity in December is 81%.

How many days does it rain in December in Greenawalds?

In Greenawalds, in December, it is raining for 9.2 days, with typically 2.32" (59mm) of accumulated precipitation.

How many days does it snow in December in Greenawalds?

In Greenawalds, in December, snow falls for 2.5 days, with typically accumulated 2.28" (58mm) of snow.

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.

How many hours of daylight does Greenawalds have in December?

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

When is the sunrise / sunset in December?

In December, on the first day of the month, sunrise is at 7:07 am and sunset at 4:35 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 4:45 pm EST.

How many hours of sunshine does Greenawalds have in December?

In Greenawalds, the average sunshine duration in December is 4.7h.

What are the months with the lowest UV index?

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

How high is the UV index in December?

In Greenawalds, the average daily maximum UV index in December is 2. 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
Greenawalds, PA

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

The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (34°F).

  • Average low temperature in December: 28.9°F

The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).

Average pressure in December
Greenawalds, PA

Average pressure in December - Greenawalds, 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
Greenawalds, PA

Average wind speed in December - Greenawalds, PA
  • Average wind speed in December: 7.5mph

The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5mph).

Average humidity in December
Greenawalds, PA

Average humidity in December - Greenawalds, PA
  • Average humidity in December: 81%

The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are April and July (76%).

Average rainfall in December
Greenawalds, PA

Average rainfall in December - Greenawalds, PA
  • Average rainfall in December: 2.32"

The wettest month (with the highest rainfall) is July (3.03").
The driest month (with the least rainfall) is September (1.61").

Average rainfall days in December
Greenawalds, PA

Average rainfall days in December - Greenawalds, PA
  • Average rainfall days in December: 9.2 days

The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is January (6.7 days).

Average snowfall in December
Greenawalds, PA

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

The month with the highest snowfall is March (4.37").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Greenawalds, PA

Average snowfall days in December - Greenawalds, PA
  • Average snowfall days in December: 2.5 days

The month with the highest number of snowfall days is February (6.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Greenawalds, 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 18min).

  • Average sunshine in December: 4h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).

Average sunshine days in December
Greenawalds, PA

Average sunshine days in December - Greenawalds, PA
  • Average sunshine days in December: 19.2 days

The month with the most sunshine days is January (20.5 days).
The month with the least sunshine days is May (11.8 days).

Average UV index in December
Greenawalds, PA

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

The months with the highest UV index are June and 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
Greenawalds, PA

Average cloud cover in December - Greenawalds, PA
  • Average cloud cover in December: 51

The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 34).

Average visibility in December
Greenawalds, PA

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

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

Greenawalds, Pennsylvania, USA

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