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
A moderate decline in the average high-temperature is seen during December, decreasing from a cool 51.1°F (10.6°C) in November to an icy 42.1°F (5.6°C). Ridgefield records a mean low-temperature of 32.7°F (0.4°C) in December.Humidity
In December, the average relative humidity is 75%.Rainfall
In Ridgefield, in December, during 8.5 rainfall days, 0.98" (25mm) of precipitation is typically accumulated. Throughout the year, there are 112.4 rainfall days, and 10.2" (259mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through March, November and December. The months with the most snowfall are February, March and December, with an average 0.47" (12mm) of accumulated snow.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:01 am and sunset at 4:28 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 4:38 pm EST.
Sunshine
In Ridgefield, the average sunshine in December is 4.9h.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 value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for the average person.Note: The maximum UV index, 2 during December, leads to the following recommendations:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. When the Sun is at its strongest around midday, find shade and limit exposure. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
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 many days does it rain in December?
When does it snow the most in Ridgefield?
How much does it snow in Ridgefield in December?
What is the month with the shortest days?
What is the average length of the day in December?
When is the sunrise / sunset in December in Ridgefield?
How long on average sun shines in December?
When is the lowest UV index?
How high is the UV index in December?
Average temperature in December
Ridgefield, NJ
- Average high temperature in December: 42.1°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (36.3°F).
- Average low temperature in December: 32.7°F
The month with the highest average low temperature is July (69.3°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).
Average pressure in December
Ridgefield, NJ
- Average pressure in December: 30.07"Hg
The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Ridgefield, NJ
- Average wind speed in December: 9.1mph
The windiest month (with the highest average wind speed) is January (9.6mph).
The calmest month (with the lowest average wind speed) is July (6.4mph).
Average humidity in December
Ridgefield, NJ
- Average humidity in December: 75%
The month with the highest relative humidity is February (76%).
The month with the lowest relative humidity is August (70%).
Average rainfall in December
Ridgefield, NJ
- Average rainfall in December: 0.98"
The wettest month (with the highest rainfall) is July (1.22").
The driest month (with the least rainfall) is February (0.51").
Average rainfall days in December
Ridgefield, NJ
- Average rainfall days in December: 8.5 days
The month with the highest number of rainy days is July (12.3 days).
The month with the least rainy days is January (5.6 days).
Average snowfall in December
Ridgefield, NJ
- Average snowfall in December: 0.47"
The months with the highest snowfall are February, March and December (0.47").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Ridgefield, NJ
- Average snowfall days in December: 2.9 days
The month with the highest number of snowfall days is February (4.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Ridgefield, 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 36min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in December
Ridgefield, NJ
- Average sunshine days in December: 19.6 days
The month with the most sunshine days is January (21.8 days).
The month with the least sunshine days is June (16.1 days).
Average UV index in December
Ridgefield, NJ
- Average UV index in December: 2
The months with the highest UV index are June, July and August (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
Ridgefield, NJ
- Average cloud cover in December: 47
The months with the most cloud cover are February, March and December (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in December
Ridgefield, 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).
Ridgefield, New Jersey, USA
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