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
With December's onset, the weather reveals a slight temperature decrease, transitioning from a mild 60.1°F (15.6°C) in November to a fresh 53.6°F (12°C). In Princeton, the December nights cool down to an average low of 39.6°F (4.2°C).Humidity
In Princeton, the average relative humidity in December is 76%.Rainfall
In Princeton, during December, the rain falls for 10.6 days and regularly aggregates up to 2.48" (63mm) of precipitation. In Princeton, during the entire year, the rain falls for 161 days and collects up to 32.95" (837mm) of precipitation.Snowfall
Months with snowfall are January through March and December. December is the first month it typically snows. Throughout December, in the average 0.2 snowfall days, it receives 0.28" (7mm) of snow. In Princeton, during the entire year, snow falls for 3.3 days and aggregates up to 2.44" (62mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 48min of daylight.On the first day of the month, sunrise is at 7:03 am and sunset at 4:59 pm. On the last day of December, sunrise is at 7:21 am and sunset at 5:10 pm EST.
Sunshine
December has the least sunshine of the year, with an average of 5.4h of sunshine.UV index
In December, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum daily UV index of 3 during December morphs into the following directions:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. To avoid the Sun's strongest rays, limit exposure around the mid-day period. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average December temperature?
What is the average humidity in December?
How many days does it rain in December?
When does it start snowing?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December?
What is the month with the least sunshine?
How long on average sun shines in December?
How high is the UV index in December?
Average temperature in December
Princeton, NC
- Average high temperature in December: 53.6°F
The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (49.1°F).
- Average low temperature in December: 39.6°F
The month with the highest average low temperature is July (71.2°F).
The coldest month (with the lowest average low temperature) is January (34.3°F).
Average pressure in December
Princeton, NC
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in December
Princeton, NC
- Average wind speed in December: 7.5mph
The windiest month (with the highest average wind speed) is April (9.1mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity in December
Princeton, NC
- Average humidity in December: 76%
The months with the highest relative humidity are August and September (78%).
The months with the lowest relative humidity are January, March and November (73%).
Average rainfall in December
Princeton, NC
- Average rainfall in December: 2.48"
The wettest month (with the highest rainfall) is August (4.02").
The driest month (with the least rainfall) is January (1.93").
Average rainfall days in December
Princeton, NC
- Average rainfall days in December: 10.6 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is November (8.6 days).
Average snowfall in December
Princeton, NC
- Average snowfall in December: 0.28"
The month with the highest snowfall is February (1.1").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in December
Princeton, NC
- Average snowfall days in December: 0.2 days
The month with the highest number of snowfall days is January (1.4 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Princeton, NC
- Average daylight in December: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in December: 5h and 2min
The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in December
Princeton, NC
- Average sunshine days in December: 18.6 days
The month with the most sunshine days is October (20.2 days).
The month with the least sunshine days is July (10.1 days).
Average UV index in December
Princeton, NC
- Average UV index in December: 3
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in December
Princeton, NC
- Average cloud cover in December: 41
The months with the most cloud cover are February and March (Cloud cover 42).
The month with the least cloud cover is June (Cloud cover 32).
Average visibility in December
Princeton, NC
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Princeton, North Carolina, USA
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