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 arrival of December indicates a decrease in the average high-temperature, moving from a chilly 47.3°F (8.5°C) in November to an icy 37.9°F (3.3°C). In December, Trenton's temperature tends to fall to an average low of 27.5°F (-2.5°C) during the night.Humidity
In December, the average relative humidity in Trenton is 82%.Rainfall
In Trenton, in December, it is raining for 8.9 days, with typically 1.85" (47mm) of accumulated precipitation. In Trenton, during the entire year, the rain falls for 139.8 days and collects up to 24.69" (627mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Trenton, in December, during 4.9 snowfall days, 2.83" (72mm) of snow is typically accumulated. In Trenton, during the entire year, snow falls for 33.6 days and aggregates up to 20.67" (525mm) of snow.Daylight
December has the shortest days of the year in Trenton, Pennsylvania, with an average of 9h and 18min of daylight.On the first day of the month, sunrise is at 7:10 am and sunset at 4:37 pm. On the last day of December, in Trenton, sunrise is at 7:28 am and sunset at 4:46 pm EST.
Sunshine
In Trenton, Pennsylvania, the average sunshine in December is 4.4h.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 reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum UV index, 2 during December, leads to the following recommendations:
Although prolonged sun exposure does not typically bother most people, children, babies, and those with sensitive skin should always have protection. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Frequently asked questions
How cold does it get in Trenton in December?
What is the average humidity in December in Trenton?
How much does it rain in Trenton in December?
How much does it snow in Trenton in December?
What is the month with the shortest days in Trenton?
What is the average length of the day in December in Trenton?
What time are sunrise and sunset in December in Trenton?
How many hours of sunshine does Trenton have in December?
When is the lowest UV index in Trenton?
How high is the UV index in December in Trenton?
Average temperature in December
Trenton, PA
- Average high temperature in December: 37.9°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (31.6°F).
- Average low temperature in December: 27.5°F
The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure in December
Trenton, PA
- Average pressure in December: 30.09"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
Trenton, PA
- Average wind speed in December: 7.7mph
The windiest month (with the highest average wind speed) is March (8.3mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in December
Trenton, PA
- Average humidity in December: 82%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is April (77%).
Average rainfall in December
Trenton, PA
- Average rainfall in December: 1.85"
The wettest month (with the highest rainfall) is May (2.72").
The driest month (with the least rainfall) is September (1.57").
Average rainfall days in December
Trenton, PA
- Average rainfall days in December: 8.9 days
The month with the highest number of rainy days is May (17.2 days).
The month with the least rainy days is January (5.8 days).
Average snowfall in December
Trenton, PA
- Average snowfall in December: 2.83"
The month with the highest snowfall is March (4.96").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Trenton, PA
- Average snowfall days in December: 4.9 days
The month with the highest number of snowfall days is February (8.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Trenton, 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: 4h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 18min).
Average sunshine days in December
Trenton, PA
- Average sunshine days in December: 18.5 days
The months with the most sunshine days are January and November (19.6 days).
The month with the least sunshine days is May (11.2 days).
Average UV index in December
Trenton, 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
Trenton, 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
Trenton, PA
- Average visibility in December: 5mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).
Trenton, Pennsylvania, USA
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