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 from November to December involves a decrease in the average high-temperature, dropping from a fresh 50.9°F (10.5°C) to an icy 41.7°F (5.4°C). Passaic reports an average low-temperature of 31.1°F (-0.5°C) during the nights of December.Humidity
The months with the highest humidity are February and December, with an average relative humidity of 77%.Rainfall
In Passaic, in December, it is raining for 10.4 days, with typically 2.36" (60mm) of accumulated precipitation. Throughout the year, there are 150.9 rainfall days, and 25.28" (642mm) of precipitation is accumulated.Snowfall
Months with snowfall in Passaic are January through April, November and December. In Passaic, in December, during 3.5 snowfall days, 1.14" (29mm) of snow is typically accumulated. Throughout the year, in Passaic, there are 20 snowfall days, and 8.07" (205mm) of snow is accumulated.Daylight
December has the shortest days of the year in Passaic, with an average of 9h and 18min of daylight.On the first day of the month, sunrise is at 7:02 am and sunset at 4:29 pm. On the last day of December, in Passaic, sunrise is at 7:20 am and sunset at 4:38 pm EST.
Sunshine
The average sunshine in December is 4.9h.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV rays for the ordinary person.Note: The average daily UV index of 2 in December transforms into the following instructions:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Opt for tightly woven and loose clothing to enhance protection from the Sun. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it cold in Passaic during December?
What are the most humid months in Passaic?
What is the average humidity in December in Passaic?
How many days does it rain in December in Passaic?
How many days does it snow in December in Passaic?
What is the month with the shortest days in Passaic?
How many hours of daylight does Passaic have in December?
When are sunrise and sunset in December in Passaic?
How many hours of sunshine does Passaic have in December?
What are the months with the lowest UV index in Passaic?
How high is the UV index in December in Passaic?
Average temperature in December
Passaic, NJ
- Average high temperature in December: 41.7°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 (35.4°F).
- Average low temperature in December: 31.1°F
The month with the highest average low temperature is July (67.8°F).
The coldest month (with the lowest average low temperature) is January (24.1°F).
Average pressure in December
Passaic, NJ
- Average pressure in December: 30.07"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
Passaic, NJ
- Average wind speed in December: 8.2mph
The windiest months (with the highest average wind speed) are January and March (8.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).
Average humidity in December
Passaic, NJ
- Average humidity in December: 77%
The months with the highest relative humidity are February and December (77%).
The month with the lowest relative humidity is August (71%).
Average rainfall in December
Passaic, NJ
- Average rainfall in December: 2.36"
The wettest month (with the highest rainfall) is July (2.91").
The driest month (with the least rainfall) is February (1.46").
Average rainfall days in December
Passaic, NJ
- Average rainfall days in December: 10.4 days
The month with the highest number of rainy days is July (17.2 days).
The month with the least rainy days is January (7.5 days).
Average snowfall in December
Passaic, NJ
- Average snowfall in December: 1.14"
The month with the highest snowfall is March (2.83").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Passaic, NJ
- Average snowfall days in December: 3.5 days
The month with the highest number of snowfall days is February (5.9 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
Passaic, 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 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in December
Passaic, NJ
- Average sunshine days in December: 17.5 days
The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is July (11.5 days).
Average UV index in December
Passaic, 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
Passaic, NJ
- Average cloud cover in December: 47
The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in December
Passaic, 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).
Passaic, New Jersey, USA
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