December weather forecast
Spring Glen, PA

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Weather in December

December, the first month of the winter in Spring Glen, is still a cold month, with an average temperature ranging between max 39.2°F (4°C) and min 28°F (-2.2°C).

Temperature

The start of December involves a temperature drop, moving from a frosty 48.2°F (9°C) in November to an icy 39.2°F (4°C). During the month of December, Spring Glen anticipates a mean low-temperature of 28°F (-2.2°C).

Humidity

In Spring Glen, Pennsylvania, the average relative humidity in December is 81%.

Rainfall

In December, the rain falls for 5.5 days. Throughout December, 0.55" (14mm) of precipitation is accumulated. Throughout the year, there are 100.8 rainfall days, and 8.5" (216mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through April, November and December. In Spring Glen, Pennsylvania, during December, snow falls for 4.2 days and regularly aggregates up to 0.24" (6mm) of snow. In Spring Glen, during the entire year, snow falls for 21.7 days and aggregates up to 2.48" (63mm) of snow.

Daylight

The month with the shortest days is December, with an average of 9h and 18min of daylight.
On the first day of the month, sunrise is at 7:11 am and sunset at 4:40 pm. On the last day of December, sunrise is at 7:30 am and sunset at 4:49 pm EST.

Sunshine

In Spring Glen, the average sunshine in December is 4.3h.

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 of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: The UV index of 2 during December leads to these advisories:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Updated: Jul 22, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it cold during December?

In Spring Glen, in December, the average high-temperature is 39.2°F (4°C), and the average low-temperature is 28°F (-2.2°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines air temperature and relative humidity, in July is estimated at 87.8°F (31°C).

What is the average humidity in December in Spring Glen?

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

How many days does it rain in December?

In Spring Glen, Pennsylvania, in December, it is raining for 5.5 days, with typically 0.55" (14mm) of accumulated precipitation.

How much does it snow in December?

In Spring Glen, during December, snow falls for 4.2 days and regularly aggregates up to 0.24" (6mm) of snow.

What is the month with the shortest days?

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

What is the average length of the day in December?

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

What time are sunrise and sunset in December in Spring Glen?

On the first day of December, sunrise is at 7:11 am and sunset at 4:40 pm. On the last day of the month, sunrise is at 7:30 am and sunset at 4:49 pm EST.

How long on average sun shines in December?

In December, the average sunshine duration is 4.3h.

When is 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.

What is the UV index intensity in December?

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
Spring Glen, PA

Average temperature in December - Spring Glen, PA
  • Average high temperature in December: 39.2°F

The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (32.9°F).

  • Average low temperature in December: 28°F

The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).

Average pressure in December
Spring Glen, PA

Average pressure in December - Spring Glen, PA
  • Average pressure in December: 30.1"Hg

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in December
Spring Glen, PA

Average wind speed in December - Spring Glen, PA
  • Average wind speed in December: 7.7mph

The windiest months (with the highest average wind speed) are March and April (8.5mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

Average humidity in December
Spring Glen, PA

Average humidity in December - Spring Glen, PA
  • Average humidity in December: 81%

The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are March and April (77%).

Average rainfall in December
Spring Glen, PA

Average rainfall in December - Spring Glen, PA
  • Average rainfall in December: 0.55"

The wettest month (with the highest rainfall) is July (1.1").
The driest month (with the least rainfall) is September (0.35").

Average rainfall days in December
Spring Glen, PA

Average rainfall days in December - Spring Glen, PA
  • Average rainfall days in December: 5.5 days

The month with the highest number of rainy days is July (13.2 days).
The month with the least rainy days is January (4.5 days).

Average snowfall in December
Spring Glen, PA

Average snowfall in December - Spring Glen, PA
  • Average snowfall in December: 0.24"

The month with the highest snowfall is January (0.75").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in December
Spring Glen, PA

Average snowfall days in December - Spring Glen, PA
  • Average snowfall days in December: 4.2 days

The month with the highest number of snowfall days is January (6.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Spring Glen, PA

Average daylight in December / Average sunshine in December - Spring Glen, 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 2min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).

Average sunshine days in December
Spring Glen, PA

Average sunshine days in December - Spring Glen, PA
  • Average sunshine days in December: 22.5 days

The month with the most sunshine days is November (22.8 days).
The month with the least sunshine days is July (14.6 days).

Average UV index in December
Spring Glen, PA

Average UV index in December - Spring Glen, PA
  • Average UV index in December: 2

The month with the highest UV index is June (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
Spring Glen, PA

Average cloud cover in December - Spring Glen, PA
  • Average cloud cover in December: 54

The months with the most cloud cover are February and December (Cloud cover 54).
The month with the least cloud cover is July (Cloud cover 33).

Average visibility in December
Spring Glen, PA

Average visibility in December - Spring Glen, PA
  • Average visibility in December: 6mi

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

Spring Glen, Pennsylvania, USA

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