December weather forecast
Good Spring, PA

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Weather in December

The first month of the winter, December, is also an icy month in Good Spring, Pennsylvania, with an average temperature ranging between min 28°F (-2.2°C) and max 39.2°F (4°C).

Temperature

The start of December involves a temperature drop, moving from a frosty 48.2°F (9°C) in November to a cold 39.2°F (4°C). The low-temperature average for Good Spring during December stands at a freezing cold 28°F (-2.2°C).

Humidity

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

Rainfall

In Good Spring, in December, during 5.5 rainfall days, 0.55" (14mm) of precipitation is typically 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 Good Spring, during December, snow falls for 4.2 days and regularly aggregates up to 0.24" (6mm) of snow. Throughout the year, there are 21.7 snowfall days, and 2.48" (63mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 9h and 18min of daylight.
On the first day of December, sunrise is at 7:10 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 4:48 pm EST.

Sunshine

The average sunshine in December is 4.3h.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: In December, the maximum UV index of 2 suggests this advice:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Updated: Aug 26, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is December?

Good Spring in December has an average high-temperature of 39.2°F (4°C) and an average low-temperature of 28°F (-2.2°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which factors the actual air temperature with the relative humidity, in July is computed to be 87.8°F (31°C).

What is the average humidity in December?

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

How much does it rain in December?

In Good Spring, during December, the rain falls for 5.5 days and regularly aggregates up to 0.55" (14mm) of precipitation.

How much does it snow in December?

In December, it is snowing for 4.2 days. Throughout December, 0.24" (6mm) of snow is accumulated.

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 Good Spring have in December?

In December, the average day length is 9h and 19min.

When is the sunrise / sunset in December?

On the first day of December, sunrise is at 7:10 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 4:48 pm EST.

How many hours of sunshine does Good Spring have in December?

In Good Spring, Pennsylvania, the average sunshine duration in December 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 value of 2, and less, symbolizes 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
Good Spring, PA

Average temperature in December - Good Spring, 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
Good Spring, PA

Average pressure in December - Good Spring, 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
Good Spring, PA

Average wind speed in December - Good Spring, 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
Good Spring, PA

Average humidity in December - Good Spring, 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
Good Spring, PA

Average rainfall in December - Good Spring, 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
Good Spring, PA

Average rainfall days in December - Good Spring, 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
Good Spring, PA

Average snowfall in December - Good Spring, 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
Good Spring, PA

Average snowfall days in December - Good Spring, 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
Good Spring, PA

Average daylight in December / Average sunshine in December - Good Spring, 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
Good Spring, PA

Average sunshine days in December - Good Spring, 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
Good Spring, PA

Average UV index in December - Good Spring, 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
Good Spring, PA

Average cloud cover in December - Good Spring, 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
Good Spring, PA

Average visibility in December - Good Spring, 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).

Good Spring, Pennsylvania, USA

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