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 onset of December results in a decrease in the average high-temperature, receding from a chilly 43.7°F (6.5°C) in November to an icy 33.3°F (0.7°C). West Windsor observes an average nighttime temperature of 23.9°F (-4.5°C) during December.Humidity
In December, the average relative humidity is 86%.Rainfall
In West Windsor, in December, during 11.2 rainfall days, 2.76" (70mm) of precipitation is typically accumulated. Throughout the year, there are 173.5 rainfall days, and 35.67" (906mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in West Windsor, New York. In West Windsor, in December, during 18.2 snowfall days, 8.54" (217mm) of snow is typically accumulated. Throughout the year, in West Windsor, there are 94.8 snowfall days, and 48.82" (1240mm) of snow is accumulated.Daylight
With an average of 9h and 12min of daylight, December has the shortest days of the year in West Windsor, New York.On the first day of the month, sunrise is at 7:12 am and sunset at 4:32 pm. On the last day of December, in West Windsor, sunrise is at 7:31 am and sunset at 4:41 pm EST.
Sunshine
In West Windsor, New York, the average sunshine in December is 2.9h.UV index
The months with the lowest UV index are January, February and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for the average person.Note: The UV index of 1 in December translates into these instructions:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Frequently asked questions
How cold is it in West Windsor in December?
What is the average humidity in December in West Windsor?
How many days does it rain in December in West Windsor?
How much does it snow in West Windsor in December?
What is the month with the shortest days in West Windsor?
What is the average length of the day in December in West Windsor?
When is the sunrise / sunset in December in West Windsor?
How many hours of sunshine does West Windsor have in December?
When is the lowest UV index in West Windsor?
How high is the UV index in December in West Windsor?
Average temperature in December
West Windsor, NY
- Average high temperature in December: 33.3°F
The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is January (27.3°F).
- Average low temperature in December: 23.9°F
The month with the highest average low temperature is July (57.4°F).
The coldest month (with the lowest average low temperature) is January (15.8°F).
Average pressure in December
West Windsor, NY
- 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
West Windsor, NY
- Average wind speed in December: 8.9mph
The windiest month (with the highest average wind speed) is January (9.3mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity in December
West Windsor, NY
- Average humidity in December: 86%
The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are April, May, June and July (80%).
Average rainfall in December
West Windsor, NY
- Average rainfall in December: 2.76"
The wettest month (with the highest rainfall) is June (3.58").
The driest months (with the least rainfall) are January and November (2.4").
Average rainfall days in December
West Windsor, NY
- Average rainfall days in December: 11.2 days
The month with the highest number of rainy days is July (19.3 days).
The month with the least rainy days is February (7.3 days).
Average snowfall in December
West Windsor, NY
- Average snowfall in December: 8.54"
The month with the highest snowfall is February (10.87").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
West Windsor, NY
- Average snowfall days in December: 18.2 days
The month with the highest number of snowfall days is January (21.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
West Windsor, NY
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 2h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 2h and 30min).
Average sunshine days in December
West Windsor, NY
- Average sunshine days in December: 6.5 days
The month with the most sunshine days is September (14.3 days).
The month with the least sunshine days is February (5.7 days).
Average UV index in December
West Windsor, NY
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February and December (UV index 1).
Average cloud cover in December
West Windsor, NY
- Average cloud cover in December: 71
The month with the most cloud cover is February (Cloud cover 74).
The month with the least cloud cover is July (Cloud cover 39).
Average visibility in December
West Windsor, NY
- Average visibility in December: 5mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January and February (4mi).
West Windsor, New York, USA
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