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's arrival signals a moderate reduction in the average high-temperature, easing from a cool 54°F (12.2°C) in November to a chilly 45.3°F (7.4°C). During December, the average low-temperature is an icy 34.5°F (1.4°C).Humidity
The average relative humidity in December is 77%.Rainfall
In Shiloh, in December, it is raining for 7.8 days, with typically 0.87" (22mm) of accumulated precipitation. Throughout the year, there are 105.4 rainfall days, and 8.03" (204mm) of precipitation is accumulated.Snowfall
January through March, November and December are months with snowfall. In December, it is snowing for 1.4 days. Throughout December, 0.24" (6mm) of snow is accumulated. Throughout the year, there are 10.9 snowfall days, and 1.38" (35mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 24min of daylight.On the first day of the month, sunrise is at 7:02 am and sunset at 4:38 pm. On the last day of December, sunrise is at 7:21 am and sunset at 4:47 pm EST.
Sunshine
The average sunshine in December is 5.2h.UV index
The months with the lowest UV index are January, February and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the average person.Note: In December, a daily maximum UV index of 2 leads to the following instructions:
Children necessitate constant protection from sunlight, unlike the majority, who can remain under the sun for about an hour without burning. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in December?
What is the average humidity in December?
How much does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Shiloh have in December?
When is the sunrise / sunset in December?
How many hours of sunshine does Shiloh have in December?
What are the months with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Shiloh, NJ
- Average high temperature in December: 45.3°F
The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (39°F).
- Average low temperature in December: 34.5°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 (27.7°F).
Average pressure in December
Shiloh, NJ
- Average pressure in December: 30.1"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
Shiloh, NJ
- Average wind speed in December: 8.5mph
The windiest month (with the highest average wind speed) is April (9.4mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).
Average humidity in December
Shiloh, NJ
- Average humidity in December: 77%
The months with the highest relative humidity are May and June (79%).
The month with the lowest relative humidity is April (72%).
Average rainfall in December
Shiloh, NJ
- Average rainfall in December: 0.87"
The wettest month (with the highest rainfall) is August (0.94").
The driest month (with the least rainfall) is September (0.35").
Average rainfall days in December
Shiloh, NJ
- Average rainfall days in December: 7.8 days
The month with the highest number of rainy days is July (12.9 days).
The month with the least rainy days is November (5.1 days).
Average snowfall in December
Shiloh, NJ
- Average snowfall in December: 0.24"
The month with the highest snowfall is January (0.43").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Shiloh, NJ
- Average snowfall days in December: 1.4 days
The month with the highest number of snowfall days is January (3.4 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
Shiloh, NJ
- Average daylight in December: 9h and 2min
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 1min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).
Average sunshine days in December
Shiloh, NJ
- Average sunshine days in December: 21.3 days
The month with the most sunshine days is November (23.1 days).
The month with the least sunshine days is July (14.1 days).
Average UV index in December
Shiloh, 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
Shiloh, NJ
- Average cloud cover in December: 45
The months with the most cloud cover are February and March (Cloud cover 46).
The months with the least cloud cover are July and August (Cloud cover 29).
Average visibility in December
Shiloh, 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).
Shiloh, New Jersey, USA
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