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 is marked by a decrease in temperature, transitioning from a chilly 47.3°F (8.5°C) in November to an icy 37.2°F (2.9°C). In West Millbury, the average nighttime temperature during December is a subzero cold 27°F (-2.8°C).Humidity
In December, the average relative humidity in West Millbury is 79%.Rainfall
December is the month with the most rainfall. Rain falls for 10.9 days and accumulates 3.11" (79mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In West Millbury, in December, snow falls for 6.1 days, with typically accumulated 3.39" (86mm) of snow. Throughout the year, there are 37.7 snowfall days, and 20.59" (523mm) of snow is accumulated.Daylight
With an average of 9h and 12min of daylight, December has the shortest days of the year in West Millbury.On the first day of December, sunrise is at 6:56 am and sunset at 4:16 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 4:25 pm EST.
Sunshine
In West Millbury, the average sunshine in December is 4.6h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The UV index of 2 in December translates into these instructions:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. To protect against the Sun's most potent rays, avoid direct exposure around midday. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Frequently asked questions
How cold is December in West Millbury?
What is the average humidity in December in West Millbury?
What is the rainiest month in West Millbury?
How much does it rain in West Millbury in December?
How many days does it snow in December in West Millbury?
What is the month with the shortest days in West Millbury?
What is the average length of the day in December in West Millbury?
When are sunrise and sunset in December in West Millbury?
How many hours of sunshine does West Millbury have in December?
What are the months with the lowest UV index in West Millbury?
What is the UV index intensity in December in West Millbury?
Average temperature in December
West Millbury, MA
- Average high temperature in December: 37.2°F
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (31.5°F).
- Average low temperature in December: 27°F
The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is January (19.6°F).
Average pressure in December
West Millbury, MA
- Average pressure in December: 30.04"Hg
The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
West Millbury, MA
- Average wind speed in December: 8.6mph
The windiest month (with the highest average wind speed) is January (9mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity in December
West Millbury, MA
- Average humidity in December: 79%
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is April (72%).
Average rainfall in December
West Millbury, MA
- Average rainfall in December: 3.11"
The wettest month (with the highest rainfall) is December (3.11").
The driest month (with the least rainfall) is September (1.81").
Average rainfall days in December
West Millbury, MA
- Average rainfall days in December: 10.9 days
The month with the highest number of rainy days is July (16.3 days).
The months with the least rainy days are January and February (7.8 days).
Average snowfall in December
West Millbury, MA
- Average snowfall in December: 3.39"
The months with the highest snowfall are February and March (5.08").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
West Millbury, MA
- Average snowfall days in December: 6.1 days
The month with the highest number of snowfall days is March (9.1 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 Millbury, 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 12min).
- Average sunshine in December: 4h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in December
West Millbury, MA
- Average sunshine days in December: 15.5 days
The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is July (12.9 days).
Average UV index in December
West Millbury, MA
- Average UV index in December: 2
The months with the highest UV index are June and July (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 Millbury, MA
- Average cloud cover in December: 49
The month with the most cloud cover is March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 37).
Average visibility in December
West Millbury, MA
- Average visibility in December: 6mi
The months with the highest visibility are March, April, November and December (6mi).
The months with the lowest visibility are January, February, May, June, July, August, September and October (5mi).
West Millbury, Massachusetts, USA
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