December weather forecastSplit Rock, PA
December
Weather in December
The first month of the winter, December, is also an icy month in Split Rock, Pennsylvania, with temperature in the range of an average low of 25.5°F (-3.6°C) and an average high of 36.3°F (2.4°C).Temperature
Welcoming December, Split Rock observes a shift in the average high-temperature, falling from November's chilly 45.5°F (7.5°C) to an icy 36.3°F (2.4°C). Split Rock, in December, observes a steady average low-temperature of 25.5°F (-3.6°C).Humidity
February and December, with an average relative humidity of 84%, are the most humid months in Split Rock.Rainfall
In Split Rock, in December, it is raining for 7.7 days, with typically 0.75" (19mm) of accumulated precipitation. Throughout the year, there are 121.5 rainfall days, and 10.51" (267mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Split Rock, in December, snow falls for 9.1 days, with typically accumulated 1.38" (35mm) of snow. In Split Rock, Pennsylvania, during the entire year, snow falls for 47 days and aggregates up to 8.23" (209mm) of snow.Daylight
The month with the shortest days in Split Rock is December, with an average of 9h and 18min of daylight.On the first day of the month, sunrise is at 7:08 am and sunset at 4:34 pm. On the last day of December, sunrise is at 7:27 am and sunset at 4:44 pm EST.
Sunshine
The average sunshine in December is 3.9h.UV index
With an average maximum UV index of 1, December is the month with the lowest UV index in Split Rock. A UV Index estimate of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.Note: A maximum high daily UV index of 1 during December translates into the following directions:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Split 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).
Average pressure in December
Split 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).
Average wind speed in December
Split 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).
Average humidity in December
Split 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%).
Average rainfall in December
Split 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").
Average rainfall days in December
Split 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).
Average snowfall in December
Split 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").
Average snowfall days in December
Split 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).
Average daylight in December /
Average sunshine in December
Split Rock, PA
- Average daylight in December: 9h and 18min
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 54min
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).
Average sunshine days in December
Split 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).
Average UV index in December
Split 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).
Average cloud cover in December
Split 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).
Average visibility in December
Split 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).
