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 transition into December involves a small decrease in the average high-temperature, dipping slightly from a fresh 52.3°F (11.3°C) in November to a frosty 44.4°F (6.9°C). Cooks Mills, in the month of December, notes an average low temperature of 36.3°F (2.4°C), indicating a small decrease from the daytime highs.Humidity
The average relative humidity in December in Cooks Mills is 75%.Rainfall
In Cooks Mills, New Jersey, in December, during 8.8 rainfall days, 1.1" (28mm) of precipitation is typically accumulated. Throughout the year, there are 122.1 rainfall days, and 11.14" (283mm) of precipitation is accumulated.Snowfall
Months with snowfall in Cooks Mills are January through March, October and December. December is the month with the most snowfall in Cooks Mills. Snow falls for 3.1 days and accumulates 0.47" (12mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 24min of daylight.On the first day of the month, sunrise is at 7:00 am and sunset at 4:30 pm. On the last day of December, in Cooks Mills, sunrise is at 7:19 am and sunset at 4:40 pm EST.
Sunshine
In December, the average sunshine is 5.1h.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 vulnerability from exposure to the Sun's UV radiation for the average person.Note: The UV index of 2 during December translates into the following guidance:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
How cold is December in Cooks Mills?
What is the average humidity in December in Cooks Mills?
How much does it rain in Cooks Mills in December?
When does it snow the most in Cooks Mills?
When does it start snowing in Cooks Mills?
What is the month with the shortest days in Cooks Mills?
What is the average length of the day in December in Cooks Mills?
When are sunrise and sunset in December in Cooks Mills?
How long on average sun shines in December in Cooks Mills?
What is the month with the lowest UV index in Cooks Mills?
What is the UV index reading in December in Cooks Mills?
Average temperature in December
Cooks Mills, NJ
- Average high temperature in December: 44.4°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (38.3°F).
- Average low temperature in December: 36.3°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 (28.9°F).
Average pressure in December
Cooks Mills, 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
Cooks Mills, NJ
- Average wind speed in December: 11.9mph
The windiest month (with the highest average wind speed) is January (12.6mph).
The calmest month (with the lowest average wind speed) is July (8mph).
Average humidity in December
Cooks Mills, NJ
- Average humidity in December: 75%
The months with the highest relative humidity are May and June (79%).
The month with the lowest relative humidity is November (73%).
Average rainfall in December
Cooks Mills, NJ
- Average rainfall in December: 1.1"
The wettest month (with the highest rainfall) is July (1.38").
The driest month (with the least rainfall) is January (0.55").
Average rainfall days in December
Cooks Mills, NJ
- Average rainfall days in December: 8.8 days
The month with the highest number of rainy days is July (14.6 days).
The month with the least rainy days is November (6.8 days).
Average snowfall in December
Cooks Mills, NJ
- Average snowfall in December: 0.47"
The month with the highest snowfall is December (0.47").
The months with the least snowfall are April, May, June, July, August, September and November (0").
Average snowfall days in December
Cooks Mills, NJ
- Average snowfall days in December: 3.1 days
The month with the highest number of snowfall days is January (4.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Cooks Mills, 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 1min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in December
Cooks Mills, NJ
- Average sunshine days in December: 19.1 days
The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is July (14.3 days).
Average UV index in December
Cooks Mills, 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
Cooks Mills, NJ
- Average cloud cover in December: 46
The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in December
Cooks Mills, 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).
Cooks Mills, New Jersey, USA
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