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 shift to December brings a decrease in the average high-temperature, falling from a frosty 49.3°F (9.6°C) in November to a cold 40.1°F (4.5°C). The average low-temperature of 28.8°F (-1.8°C) is witnessed during December.Humidity
The months with the highest humidity are February, October and December, with an average relative humidity of 80%.Rainfall
In Butler, during December, the rain falls for 6.9 days and regularly aggregates up to 0.83" (21mm) of precipitation. In Butler, during the entire year, the rain falls for 111.1 days and collects up to 8.46" (215mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. In Butler, during December, snow falls for 3.5 days and regularly aggregates up to 0.51" (13mm) of snow. Throughout the year, there are 22 snowfall days, and 3.19" (81mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 18min of daylight.On the first day of December, sunrise is at 7:03 am and sunset at 4:29 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 4:39 pm EST.
Sunshine
The average sunshine in December is 4.6h.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 low health risk from exposure to the Sun's UV rays for average individuals.Note: A daily high UV index of 2 in December leads to these guidelines:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it cold during December?
What are the most humid months?
What is the average humidity in December?
How many days 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 Butler have in December?
When are sunrise and sunset in December in Butler?
How long on average sun shines in December?
What is the month with the lowest UV index?
How high is the UV index in December?
Average temperature in December
Butler, NJ
- Average high temperature in December: 40.1°F
The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (34.3°F).
- Average low temperature in December: 28.8°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (21.4°F).
Average pressure in December
Butler, 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
Butler, NJ
- Average wind speed in December: 7.3mph
The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).
Average humidity in December
Butler, NJ
- Average humidity in December: 80%
The months with the highest relative humidity are February, October and December (80%).
The month with the lowest relative humidity is April (75%).
Average rainfall in December
Butler, NJ
- Average rainfall in December: 0.83"
The wettest month (with the highest rainfall) is July (1.06").
The driest month (with the least rainfall) is September (0.31").
Average rainfall days in December
Butler, NJ
- Average rainfall days in December: 6.9 days
The month with the highest number of rainy days is July (14.3 days).
The month with the least rainy days is January (4.5 days).
Average snowfall in December
Butler, NJ
- Average snowfall in December: 0.51"
The month with the highest snowfall is March (0.98").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Butler, NJ
- Average snowfall days in December: 3.5 days
The month with the highest number of snowfall days is January (6.1 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
Butler, 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 4min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).
Average sunshine days in December
Butler, NJ
- Average sunshine days in December: 21.1 days
The month with the most sunshine days is January (22.3 days).
The month with the least sunshine days is May (13.9 days).
Average UV index in December
Butler, 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
Butler, NJ
- Average cloud cover in December: 51
The months with the most cloud cover are February and March (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility in December
Butler, NJ
- Average visibility in December: 6mi
The months with the highest visibility are January, March, April, August, November and December (6mi).
The months with the lowest visibility are February, May, June, July, September and October (5mi).
Butler, New Jersey, USA
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