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
A change in temperatures is noted as November gives way to December, with average highs reducing from a fresh 53.4°F (11.9°C) to a chilly 44.4°F (6.9°C). Harrisonville's nighttime temperature during December is consistently averaged at a wintry 33.3°F (0.7°C).Humidity
In Harrisonville, New Jersey, the average relative humidity in December is 77%.Rainfall
In Harrisonville, New Jersey, during December, the rain falls for 7.7 days and regularly aggregates up to 1.5" (38mm) of precipitation. In Harrisonville, during the entire year, the rain falls for 129 days and collects up to 15.55" (395mm) of precipitation.Snowfall
January through April, November and December are months with snowfall in Harrisonville. In Harrisonville, in December, snow falls for 2 days, with typically accumulated 0.28" (7mm) of snow. Throughout the year, there are 12.3 snowfall days, and 3.7" (94mm) of snow is accumulated.Daylight
December has the shortest days of the year in Harrisonville, with an average of 9h and 24min of daylight.On the first day of the month, sunrise is at 7:04 am and sunset at 4:38 pm. On the last day of December, in Harrisonville, sunrise is at 7:22 am and sunset at 4:48 pm EST.
Sunshine
In December, the average sunshine in Harrisonville is 5.1h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 2 during December translates into the following guidance:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Frequently asked questions
How cold does it get in Harrisonville in December?
What is the average humidity in December in Harrisonville?
How much does it rain in Harrisonville in December?
How many days does it snow in December in Harrisonville?
What is the month with the shortest days in Harrisonville?
What is the average length of the day in December in Harrisonville?
When is the sunrise / sunset in December in Harrisonville?
How many hours of sunshine does Harrisonville have in December?
What is the month with the lowest UV index in Harrisonville?
What is the UV index intensity in December in Harrisonville?
Average temperature in December
Harrisonville, NJ
- Average high temperature in December: 44.4°F
The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is January (37.9°F).
- Average low temperature in December: 33.3°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (26.8°F).
Average pressure in December
Harrisonville, NJ
- Average pressure in December: 30.09"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
Harrisonville, NJ
- Average wind speed in December: 8mph
The windiest months (with the highest average wind speed) are March and April (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity in December
Harrisonville, NJ
- Average humidity in December: 77%
The month with the highest relative humidity is October (78%).
The month with the lowest relative humidity is April (72%).
Average rainfall in December
Harrisonville, NJ
- Average rainfall in December: 1.5"
The wettest month (with the highest rainfall) is August (1.93").
The driest month (with the least rainfall) is January (0.94").
Average rainfall days in December
Harrisonville, NJ
- Average rainfall days in December: 7.7 days
The month with the highest number of rainy days is May (14.6 days).
The month with the least rainy days is November (7.5 days).
Average snowfall in December
Harrisonville, NJ
- Average snowfall in December: 0.28"
The month with the highest snowfall is January (1.18").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Harrisonville, NJ
- Average snowfall days in December: 2 days
The month with the highest number of snowfall days is January (3.6 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
Harrisonville, 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 54min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).
Average sunshine days in December
Harrisonville, NJ
- Average sunshine days in December: 20.9 days
The months with the most sunshine days are November and December (20.9 days).
The month with the least sunshine days is July (13.4 days).
Average UV index in December
Harrisonville, 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, November and December (UV index 2).
Average cloud cover in December
Harrisonville, 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 30).
Average visibility in December
Harrisonville, 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).
Harrisonville, New Jersey, USA
Weather forecast for your location
2. Allow the app to use your location
