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 involves a decrease in temperature, down from a chilly 49.1°F (9.5°C) in November to a wintry 38.5°F (3.6°C). Throughout December, Concord anticipates an average low-temperature of 27.7°F (-2.4°C).Humidity
In Concord, the average relative humidity in December is 77%.Rainfall
In Concord, in December, it is raining for 7.1 days, with typically 1.18" (30mm) of accumulated precipitation. In Concord, during the entire year, the rain falls for 116.6 days and collects up to 13.7" (348mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. December is the month with the most snowfall. Snow falls for 3.9 days and accumulates 2.24" (57mm) of snow.Daylight
With an average of 9h and 6min of daylight, December has the shortest days of the year.On the first day of December in Concord, sunrise is at 6:55 am and sunset at 4:13 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 4:22 pm EST.
Sunshine
In Concord, Massachusetts, the average sunshine in December is 4.9h.UV index
The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: The maximum daily UV index of 1 in December converts into the following recommendations:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
How many days does it rain in December in Concord?
When does it snow the most?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Concord have in December?
When are sunrise and sunset in December?
How many hours of sunshine does Concord have in December?
When is the lowest UV index?
What is the UV index reading in December?
Average temperature in December
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
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
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
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
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
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
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
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
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
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
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
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
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).
Concord, Massachusetts, USA
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