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
In December, the meteorological conditions alter, with the average high-temperature shifting from a cool 50.4°F (10.2°C) in November to a wintry 41°F (5°C). An average low-temperature of 29.3°F (-1.5°C) is common in Chester during the nights of December.Humidity
In December, the average relative humidity in Chester, New Jersey, is 79%.Rainfall
The month with the most rainfall is December, when the rain falls for 10.9 days and typically aggregates up to 3.39" (86mm) of precipitation.Snowfall
Months with snowfall in Chester are January through May, October through December. In Chester, in December, snow falls for 4 days, with typically accumulated 2.13" (54mm) of snow. Throughout the year, there are 28.5 snowfall days, and 14.49" (368mm) of snow is accumulated.Daylight
The month with the shortest days in Chester is December, with an average of 9h and 18min of daylight.On the first day of December, sunrise is at 7:04 am and sunset at 4:31 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 4:41 pm EST.
Sunshine
In December, the average sunshine in Chester is 4.8h.UV index
The months with the lowest UV index in Chester are January through March, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for ordinary individuals.Note: In December, a daily maximum UV index of 2 leads to the following instructions:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Frequently asked questions
Is December cold in Chester?
What is the average humidity in December in Chester?
What is the wettest month in Chester?
How much does it rain in Chester in December?
How many days does it snow in December in Chester?
What is the month with the shortest days in Chester?
How many hours of daylight does Chester have in December?
When is the sunrise / sunset in December in Chester?
How many hours of sunshine does Chester have in December?
What is the month with the lowest UV index in Chester?
What is the UV index reading in December in Chester?
Average temperature in December
Chester, NJ
- Average high temperature in December: 41°F
The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (35.1°F).
- Average low temperature in December: 29.3°F
The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (22.3°F).
Average pressure in December
Chester, NJ
- Average pressure in December: 30.08"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Chester, NJ
- Average wind speed in December: 7.5mph
The windiest month (with the highest average wind speed) is March (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in December
Chester, NJ
- Average humidity in December: 79%
The months with the highest relative humidity are February and October (80%).
The month with the lowest relative humidity is April (75%).
Average rainfall in December
Chester, NJ
- Average rainfall in December: 3.39"
The wettest month (with the highest rainfall) is December (3.39").
The driest month (with the least rainfall) is September (1.85").
Average rainfall days in December
Chester, NJ
- Average rainfall days in December: 10.9 days
The months with the highest number of rainy days are May and July (17.3 days).
The month with the least rainy days is January (8.9 days).
Average snowfall in December
Chester, NJ
- Average snowfall in December: 2.13"
The month with the highest snowfall is March (4.49").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Chester, NJ
- Average snowfall days in December: 4 days
The month with the highest number of snowfall days is January (8.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Chester, NJ
- 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 5min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in December
Chester, NJ
- Average sunshine days in December: 16.6 days
The month with the most sunshine days is November (17.6 days).
The month with the least sunshine days is May (11.4 days).
Average UV index in December
Chester, NJ
- Average UV index in December: 2
The months with the highest UV index are June and July (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
Chester, NJ
- Average cloud cover in December: 49
The months with the most cloud cover are February and December (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in December
Chester, NJ
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, November and December (6mi).
The months with the lowest visibility are May, September and October (5mi).
Chester, New Jersey, USA
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