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 coincides with a reduction in the average high-temperature, falling from a chilly 49.1°F (9.5°C) in November to a cold 38.5°F (3.6°C). Throughout the month of December, the average temperature dips to a freezing cold 27.7°F (-2.4°C) at night.Humidity
In December, the average relative humidity is 77%.Rainfall
In West Concord, in December, during 7.1 rainfall days, 1.18" (30mm) of precipitation is typically accumulated. Throughout the year, there are 116.6 rainfall days, and 13.7" (348mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. The month with the most snowfall is December, when snow falls for 3.9 days and typically aggregates up to 2.24" (57mm) of snow.Daylight
With an average of 9h and 6min of daylight, December has the shortest days of the year in West Concord.On the first day of the month, sunrise is at 6:56 am and sunset at 4:13 pm. On the last day of December, sunrise is at 7:14 am and sunset at 4:22 pm EST.
Sunshine
The average sunshine in December is 4.9h.UV index
December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV rays for average individuals.Note: The maximum daily UV index, 1 in December, converts into the following recommendations:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is December cold?
What is the average humidity in December in West Concord?
How many days does it rain in December?
What is the snowiest month?
How much does it snow in December?
What is the month with the shortest days in West Concord?
What is the average length of the day in December in West Concord?
What time are sunrise and sunset in December?
How long on average sun shines in December?
When is the lowest UV index?
What is the UV index reading in December?
Average temperature in December
West Concord, MA
- Average high temperature in December: 38.5°F
The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (32.5°F).
- Average low temperature in December: 27.7°F
The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).
Average pressure in December
West Concord, MA
- Average pressure in December: 30.03"Hg
The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
West Concord, MA
- Average wind speed in December: 8.3mph
The windiest month (with the highest average wind speed) is January (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity in December
West Concord, MA
- Average humidity in December: 77%
The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is April (70%).
Average rainfall in December
West Concord, MA
- Average rainfall in December: 1.18"
The wettest month (with the highest rainfall) is October (1.42").
The driest month (with the least rainfall) is September (0.71").
Average rainfall days in December
West Concord, MA
- Average rainfall days in December: 7.1 days
The month with the highest number of rainy days is May (12.8 days).
The month with the least rainy days is January (5.5 days).
Average snowfall in December
West Concord, MA
- Average snowfall in December: 2.24"
The month with the highest snowfall is December (2.24").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
West Concord, MA
- Average snowfall days in December: 3.9 days
The month with the highest number of snowfall days is January (6.2 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 Concord, MA
- 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 6min).
- Average sunshine in December: 4h and 5min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in December
West Concord, MA
- Average sunshine days in December: 20 days
The month with the most sunshine days is January (20.3 days).
The months with the least sunshine days are April and June (15.8 days).
Average UV index in December
West Concord, MA
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
West Concord, MA
- Average cloud cover in December: 47
The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in December
West Concord, MA
- Average visibility in December: 6mi
The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is February (5mi).
West Concord, Massachusetts, USA
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