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
December ushers in a slight temperature change, with average high-temperatures reducing from November's cool 53.2°F (11.8°C) to a frosty 44.2°F (6.8°C). Throughout the month of December, the nighttime temperature in Cinnaminson dips to an average of 32.9°F (0.5°C).Humidity
The average relative humidity in December in Cinnaminson, New Jersey, is 76%.Rainfall
In December, in Cinnaminson, the rain falls for 7.4 days. Throughout December, 1.1" (28mm) of precipitation is accumulated. In Cinnaminson, during the entire year, the rain falls for 121.5 days and collects up to 12.44" (316mm) of precipitation.Snowfall
Months with snowfall in Cinnaminson, New Jersey, are January through May, November and December. In Cinnaminson, New Jersey, during December, snow falls for 1.5 days and regularly aggregates up to 0.16" (4mm) of snow. In Cinnaminson, New Jersey, during the entire year, snow falls for 10.3 days and aggregates up to 2.36" (60mm) of snow.Daylight
With an average of 9h and 24min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:03 am and sunset at 4:35 pm. On the last day of December, sunrise is at 7:21 am and sunset at 4:44 pm EST.
Sunshine
The average sunshine in December in Cinnaminson is 5h.UV index
The months with the lowest UV index in Cinnaminson, New Jersey, are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for average individuals.Note: A typical high UV index of 2 in December suggests the following recommendations:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
Is it cold in Cinnaminson during December?
What is the average humidity in December in Cinnaminson?
How many days does it rain in December in Cinnaminson?
How many days does it snow in December in Cinnaminson?
What is the month with the shortest days in Cinnaminson?
What is the average length of the day in December in Cinnaminson?
When is the sunrise / sunset in December in Cinnaminson?
How long on average sun shines in December in Cinnaminson?
When is the lowest UV index in Cinnaminson?
How high is the UV index in December in Cinnaminson?
Average temperature in December
Cinnaminson, NJ
- Average high temperature in December: 44.2°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (37.8°F).
- Average low temperature in December: 32.9°F
The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (25.5°F).
Average pressure in December
Cinnaminson, NJ
- 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
Cinnaminson, NJ
- Average wind speed in December: 7.6mph
The windiest months (with the highest average wind speed) are March and April (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity in December
Cinnaminson, NJ
- Average humidity in December: 76%
The month with the highest relative humidity is October (77%).
The month with the lowest relative humidity is April (70%).
Average rainfall in December
Cinnaminson, NJ
- Average rainfall in December: 1.1"
The wettest month (with the highest rainfall) is August (1.46").
The driest month (with the least rainfall) is January (0.67").
Average rainfall days in December
Cinnaminson, NJ
- Average rainfall days in December: 7.4 days
The month with the highest number of rainy days is July (14.4 days).
The month with the least rainy days is November (6.6 days).
Average snowfall in December
Cinnaminson, NJ
- Average snowfall in December: 0.16"
The month with the highest snowfall is February (0.79").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Cinnaminson, NJ
- Average snowfall days in December: 1.5 days
The month with the highest number of snowfall days is January (3.6 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Cinnaminson, NJ
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in December: 5h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in December
Cinnaminson, NJ
- Average sunshine days in December: 21.5 days
The month with the most sunshine days is December (21.5 days).
The month with the least sunshine days is July (14 days).
Average UV index in December
Cinnaminson, NJ
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Cinnaminson, NJ
- Average cloud cover in December: 47
The month with the most cloud cover is February (Cloud cover 48).
The months with the least cloud cover are July and August (Cloud cover 32).
Average visibility in December
Cinnaminson, NJ
- 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).
Cinnaminson, New Jersey, USA
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