Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
The onset of December results in a decrease in the average high-temperature, receding from a chilly 44.2°F (6.8°C) in November to a cold 34.9°F (1.6°C). Cedar Run, in December, witnesses an average low-temperature of 24.4°F (-4.2°C).Humidity
The average relative humidity in December in Cedar Run is 85%.Rainfall
In Cedar Run, in December, it is raining for 12.3 days, with typically 2.8" (71mm) of accumulated precipitation. Throughout the year, there are 173.4 rainfall days, and 32.13" (816mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In December, it is snowing for 14.1 days. Throughout December, 5.51" (140mm) of snow is accumulated. In Cedar Run, during the entire year, snow falls for 69.8 days and aggregates up to 30.63" (778mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 12min of daylight.On the first day of December, sunrise is at 7:17 am and sunset at 4:40 pm. On the last day of the month, sunrise is at 7:36 am and sunset at 4:50 pm EST.
Sunshine
The months with the least sunshine in Cedar Run are January and December, with an average of 3h of sunshine.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for the average person.Note: In December, the UV index of 1 transforms into the following advice:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
How much does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Cedar Run have in December?
When is the sunrise / sunset in December?
What are the months with the least sunshine?
How long on average sun shines in December?
What are the months with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Cedar Run, PA
- Average high temperature in December: 34.9°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in December: 24.4°F
The month with the highest average low temperature is July (56.8°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).
Average pressure in December
Cedar Run, 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
Cedar Run, PA
- Average wind speed in December: 7.5mph
The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in December
Cedar Run, PA
- Average humidity in December: 85%
The month with the highest relative humidity is February (86%).
The months with the lowest relative humidity are June and July (78%).
Average rainfall in December
Cedar Run, PA
- Average rainfall in December: 2.8"
The wettest month (with the highest rainfall) is April (3.62").
The driest month (with the least rainfall) is November (2.17").
Average rainfall days in December
Cedar Run, PA
- Average rainfall days in December: 12.3 days
The month with the highest number of rainy days is July (18.8 days).
The months with the least rainy days are January and February (9.3 days).
Average snowfall in December
Cedar Run, PA
- Average snowfall in December: 5.51"
The month with the highest snowfall is February (8.43").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Cedar Run, PA
- Average snowfall days in December: 14.1 days
The month with the highest number of snowfall days is January (17.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Cedar Run, PA
- Average daylight in December: 9h and 1min
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 12min).
- Average sunshine in December: 3h and 0min
The month with the most sunshine is July (Average sunshine: 9h and 36min).
The months with the least sunshine are January and December (Average sunshine: 3h and 0min).
Average sunshine days in December
Cedar Run, PA
- Average sunshine days in December: 8.6 days
The month with the most sunshine days is September (15.2 days).
The month with the least sunshine days is February (7.6 days).
Average UV index in December
Cedar Run, PA
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Cedar Run, PA
- Average cloud cover in December: 70
The months with the most cloud cover are January and December (Cloud cover 70).
The month with the least cloud cover is July (Cloud cover 41).
Average visibility in December
Cedar Run, PA
- Average visibility in December: 4mi
The months with the highest visibility are March, April, May, June, July and November (5mi).
The months with the lowest visibility are January, February, August, September, October and December (4mi).
Cedar Run, Pennsylvania, USA
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