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 brings a slight decrease in temperature, down from a fresh 51.8°F (11°C) in November to a frosty 44.2°F (6.8°C). West Chop's nights in December maintain a consistent average of 36.9°F (2.7°C), demonstrating a minimal differential from its daytime temperature.Humidity
The average relative humidity in December is 75%.Rainfall
In West Chop, during December, the rain falls for 7.9 days and regularly aggregates up to 0.71" (18mm) of precipitation. In West Chop, during the entire year, the rain falls for 89.3 days and collects up to 6.14" (156mm) of precipitation.Snowfall
Months with snowfall are January through March and December. December is the first month it typically snows. Throughout December, in the average 4.9 snowfall days, it receives 0.2" (5mm) of snow. Throughout the year, there are 19.3 snowfall days, and 0.75" (19mm) of snow is accumulated.Daylight
With an average of 9h and 12min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 6:49 am and sunset at 4:13 pm. On the last day of December, sunrise is at 7:08 am and sunset at 4:22 pm EST.
Sunshine
In West Chop, the average sunshine in December is 4.7h.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 of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for the ordinary person.Note: In December, the maximum UV index of 2 suggests these recommendations:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What is the average humidity in December?
How many days does it rain in December?
When does it start snowing?
What is the month with the shortest days?
How many hours of daylight does West Chop have in December?
When are sunrise and sunset in December?
How long on average sun shines in December?
When is the lowest UV index?
How high is the UV index in December?
Average temperature in December
West Chop, MA
- Average high temperature in December: 44.2°F
The warmest month (with the highest average high temperature) is August (73.8°F).
The month with the lowest average high temperature is January (38.7°F).
- Average low temperature in December: 36.9°F
The month with the highest average low temperature is August (68.9°F).
The coldest month (with the lowest average low temperature) is January (30.2°F).
Average pressure in December
West Chop, MA
- Average pressure in December: 30.03"Hg
The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
West Chop, MA
- Average wind speed in December: 15.8mph
The windiest month (with the highest average wind speed) is January (16mph).
The calmest month (with the lowest average wind speed) is July (10.7mph).
Average humidity in December
West Chop, MA
- Average humidity in December: 75%
The months with the highest relative humidity are May, June and July (83%).
The month with the lowest relative humidity is November (74%).
Average rainfall in December
West Chop, MA
- Average rainfall in December: 0.71"
The wettest month (with the highest rainfall) is October (0.83").
The driest month (with the least rainfall) is July (0.35").
Average rainfall days in December
West Chop, MA
- Average rainfall days in December: 7.9 days
The month with the highest number of rainy days is July (9.1 days).
The months with the least rainy days are September and November (5.9 days).
Average snowfall in December
West Chop, MA
- Average snowfall in December: 0.2"
The months with the highest snowfall are January and February (0.24").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in December
West Chop, MA
- Average snowfall days in December: 4.9 days
The month with the highest number of snowfall days is January (5.6 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
West Chop, MA
- Average daylight in December: 9h and 1min
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 12min).
- Average sunshine in December: 4h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in December
West Chop, MA
- Average sunshine days in December: 19.8 days
The month with the most sunshine days is September (21.4 days).
The month with the least sunshine days is February (18.5 days).
Average UV index in December
West Chop, MA
- Average UV index in December: 2
The months with the highest UV index are 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
West Chop, MA
- Average cloud cover in December: 50
The month with the most cloud cover is December (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in December
West Chop, MA
- 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).
West Chop, Massachusetts, USA
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