December weather forecast
Spilt Rock, PA

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Weather in December

The first month of the winter, December, is still a cold month in Spilt Rock, Pennsylvania, with an average temperature varying between 36.3°F (2.4°C) and 25.5°F (-3.6°C).

Temperature

As November transitions to December, the average high-temperature falls from a chilly 45.5°F (7.5°C) to a wintry 36.3°F (2.4°C). December's nights observe an average temperature of 25.5°F (-3.6°C).

Humidity

February and December, with an average relative humidity of 84%, are the most humid months.

Rainfall

In Spilt Rock, in December, it is raining for 7.7 days, with typically 0.75" (19mm) of accumulated precipitation. In Spilt Rock, during the entire year, the rain falls for 121.5 days and collects up to 10.51" (267mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In Spilt Rock, during December, snow falls for 9.1 days and regularly aggregates up to 1.38" (35mm) of snow. Throughout the year, in Spilt Rock, Pennsylvania, there are 47 snowfall days, and 8.23" (209mm) of snow is accumulated.

Daylight

December has the shortest days of the year in Spilt Rock, Pennsylvania, with an average of 9h and 18min of daylight.
On the first day of December, sunrise is at 7:08 am and sunset at 4:34 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 4:44 pm EST.

Sunshine

In December, the average sunshine in Spilt Rock is 3.9h.

UV index

The month with the lowest UV index in Spilt Rock, Pennsylvania, is December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.
Note: During December, 1 as the daily maximum UV index converts into the following advice:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
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Frequently asked questions

How cold is it in Spilt Rock in December?

In December, the average high-temperature and low-temperature are 36.3°F (2.4°C) and 25.5°F (-3.6°C) respectively.

What is the most humid month in Spilt Rock?

The months with the highest humidity are February and December, with an average relative humidity of 84%.

What is the average humidity in December in Spilt Rock?

In December, the average relative humidity in Spilt Rock, Pennsylvania, is 84%.

How much does it rain in Spilt Rock in December?

In Spilt Rock, Pennsylvania, during December, the rain falls for 7.7 days and regularly aggregates up to 0.75" (19mm) of precipitation.

How many days does it snow in December in Spilt Rock?

In Spilt Rock, Pennsylvania, during December, snow falls for 9.1 days and regularly aggregates up to 1.38" (35mm) of snow.

What is the month with the shortest days in Spilt Rock?

December has the shortest days of the year in Spilt Rock, with an average of 9h and 18min of daylight.

What is the average length of the day in December in Spilt Rock?

The average day length in December in Spilt Rock, Pennsylvania, is 9h and 17min.

When is the sunrise / sunset in December in Spilt Rock?

In December, on the first day of the month, sunrise is at 7:08 am and sunset at 4:34 pm. On the last day of the month, in Spilt Rock, sunrise is at 7:27 am and sunset at 4:44 pm EST.

How many hours of sunshine does Spilt Rock have in December?

In December, the average sunshine duration in Spilt Rock is 3.9h.

When is the lowest UV index in Spilt Rock?

The month with the lowest UV index is December, with an average maximum UV index of 1.

What is the UV index intensity in December in Spilt Rock?

In Spilt Rock, Pennsylvania, the average daily maximum UV index in December is 1. A UV Index of 2, and less, symbolizes 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
Spilt Rock, PA

Average temperature in December - Spilt Rock, PA
  • Average high temperature in December: 36.3°F

The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (30.6°F).

  • Average low temperature in December: 25.5°F

The month with the highest average low temperature is July (60.1°F).
The coldest month (with the lowest average low temperature) is January (18.7°F).

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Average pressure in December
Spilt Rock, PA

Average pressure in December - Spilt Rock, 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).

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Average wind speed in December
Spilt Rock, PA

Average wind speed in December - Spilt Rock, PA
  • Average wind speed in December: 8mph

The windiest months (with the highest average wind speed) are January and March (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

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Average humidity in December
Spilt Rock, PA

Average humidity in December - Spilt Rock, PA
  • Average humidity in December: 84%

The months with the highest relative humidity are February and December (84%).
The months with the lowest relative humidity are April, June and July (78%).

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Average rainfall in December
Spilt Rock, PA

Average rainfall in December - Spilt Rock, PA
  • Average rainfall in December: 0.75"

The wettest month (with the highest rainfall) is July (1.22").
The driest month (with the least rainfall) is September (0.51").

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Average rainfall days in December
Spilt Rock, PA

Average rainfall days in December - Spilt Rock, PA
  • Average rainfall days in December: 7.7 days

The month with the highest number of rainy days is May (14.1 days).
The month with the least rainy days is February (6.3 days).

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Average snowfall in December
Spilt Rock, PA

Average snowfall in December - Spilt Rock, PA
  • Average snowfall in December: 1.38"

The months with the highest snowfall are January, February and March (1.73").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Spilt Rock, PA

Average snowfall days in December - Spilt Rock, PA
  • Average snowfall days in December: 9.1 days

The month with the highest number of snowfall days is February (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in December /
Average sunshine in December
Spilt Rock, PA

Average daylight in December / Average sunshine in December - Spilt Rock, 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 0min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).

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Average sunshine days in December
Spilt Rock, PA

Average sunshine days in December - Spilt Rock, PA
  • Average sunshine days in December: 18 days

The month with the most sunshine days is November (19.8 days).
The month with the least sunshine days is May (12.5 days).

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Average UV index in December
Spilt Rock, PA

Average UV index in December - Spilt Rock, 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).

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Average cloud cover in December
Spilt Rock, PA

Average cloud cover in December - Spilt Rock, PA
  • Average cloud cover in December: 60

The months with the most cloud cover are February and December (Cloud cover 60).
The month with the least cloud cover is July (Cloud cover 38).

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Average visibility in December
Spilt Rock, PA

Average visibility in December - Spilt Rock, PA
  • Average visibility in December: 5mi

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

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Spilt Rock, Pennsylvania, USA

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