December weather forecastClarks Mill, NJ
December
Weather in December
December, the first month of the winter in Clarks Mill, is still a chilly month, with an average temperature varying between 36.5°F (2.5°C) and 46°F (7.8°C).Temperature
Clarks Mill's progression into December involves a gentle drop in the average high-temperature, from a cool 54.1°F (12.3°C) in November to a frosty 46°F (7.8°C). Clarks Mill's nighttime temperature in December falls to an average of 36.5°F (2.5°C).Humidity
The average relative humidity in December is 76%.Rainfall
In Clarks Mill, in December, it is raining for 10.1 days, with typically 2.8" (71mm) of accumulated precipitation. Throughout the year, there are 144.2 rainfall days, and 27.48" (698mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, November and December. In Clarks Mill, in December, during 2.1 snowfall days, 0.94" (24mm) of snow is typically accumulated. Throughout the year, there are 12.6 snowfall days, and 5.79" (147mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 24min of daylight.On the first day of December, sunrise is at 6:59 am and sunset at 4:34 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 4:44 pm EST.
Sunshine
In December, the average sunshine is 5.1h.UV index
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index in Clarks Mill. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for the average person.Note: In December, the maximum UV index of 2 translates into these guidelines:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. To guard against the harmful effects of the Sun, minimize exposure during midday. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Clarks Mill, NJ
- Average high temperature in December: 46°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (39.7°F).
- Average low temperature in December: 36.5°F
The month with the highest average low temperature is July (70.5°F).
The coldest month (with the lowest average low temperature) is January (29.7°F).
Average pressure in December
Clarks Mill, NJ
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Clarks Mill, NJ
- Average wind speed in December: 10.1mph
The windiest months (with the highest average wind speed) are January and February (10.6mph).
The calmest month (with the lowest average wind speed) is August (7.2mph).
Average humidity in December
Clarks Mill, NJ
- Average humidity in December: 76%
The months with the highest relative humidity are May and June (79%).
The month with the lowest relative humidity is April (73%).
Average rainfall in December
Clarks Mill, NJ
- Average rainfall in December: 2.8"
The wettest month (with the highest rainfall) is August (2.91").
The driest month (with the least rainfall) is January (1.61").
Average rainfall days in December
Clarks Mill, NJ
- Average rainfall days in December: 10.1 days
The month with the highest number of rainy days is July (16.1 days).
The months with the least rainy days are January and November (8.3 days).
Average snowfall in December
Clarks Mill, NJ
- Average snowfall in December: 0.94"
The month with the highest snowfall is March (1.97").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Clarks Mill, NJ
- Average snowfall days in December: 2.1 days
The month with the highest number of snowfall days is January (3.8 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
Clarks Mill, NJ
- Average daylight in December: 9h and 24min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in December: 5h and 6min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).
Average sunshine days in December
Clarks Mill, NJ
- Average sunshine days in December: 19.2 days
The month with the most sunshine days is November (19.8 days).
The month with the least sunshine days is July (12.3 days).
Average UV index in December
Clarks Mill, 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 and December (UV index 2).
Average cloud cover in December
Clarks Mill, NJ
- Average cloud cover in December: 45
The months with the most cloud cover are February and March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in December
Clarks Mill, 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).
