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 frosty 47.3°F (8.5°C) in November to a cold 37.4°F (3°C). Throughout December nights, Bolton registers an average low-temperature of 26.6°F (-3°C).Humidity
In December, the average relative humidity is 78%.Rainfall
December is the month with the most rainfall in Bolton. Rain falls for 10.7 days and accumulates 2.91" (74mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Bolton, in December, during 5.6 snowfall days, 4.33" (110mm) of snow is typically accumulated. Throughout the year, in Bolton, Massachusetts, there are 36.5 snowfall days, and 23.82" (605mm) of snow is accumulated.Daylight
With an average of 9h and 6min of daylight, December has the shortest days of the year in Bolton.On the first day of December, sunrise is at 6:56 am and sunset at 4:14 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 4:23 pm EST.
Sunshine
The average sunshine in December is 4.8h.UV index
The months with the lowest UV index in Bolton are January through March, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: During December, 2 as the daily maximum UV index converts into the following advice:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
How cold is December in Bolton?
What is the average humidity in December in Bolton?
What is the wettest month in Bolton?
How much does it rain in Bolton in December?
How much does it snow in Bolton in December?
What is the month with the shortest days in Bolton?
How many hours of daylight does Bolton have in December?
What time are sunrise and sunset in December in Bolton?
How long on average sun shines in December in Bolton?
What is the month with the lowest UV index in Bolton?
What is the UV index reading in December in Bolton?
Average temperature in December
Bolton, MA
- Average high temperature in December: 37.4°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (31.5°F).
- Average low temperature in December: 26.6°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure in December
Bolton, MA
- Average pressure in December: 30.04"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
Bolton, MA
- Average wind speed in December: 8.2mph
The windiest month (with the highest average wind speed) is January (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in December
Bolton, MA
- Average humidity in December: 78%
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is April (71%).
Average rainfall in December
Bolton, MA
- Average rainfall in December: 2.91"
The wettest month (with the highest rainfall) is December (2.91").
The driest month (with the least rainfall) is September (1.57").
Average rainfall days in December
Bolton, MA
- Average rainfall days in December: 10.7 days
The month with the highest number of rainy days is July (16 days).
The month with the least rainy days is February (7.3 days).
Average snowfall in December
Bolton, MA
- Average snowfall in December: 4.33"
The month with the highest snowfall is February (6.1").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Bolton, MA
- Average snowfall days in December: 5.6 days
The month with the highest number of snowfall days is February (9.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Bolton, 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 12min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in December
Bolton, MA
- Average sunshine days in December: 16.5 days
The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is July (12.8 days).
Average UV index in December
Bolton, MA
- Average UV index in December: 2
The months with the highest UV index are June, 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
Bolton, 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 34).
Average visibility in December
Bolton, MA
- Average visibility in December: 6mi
The months with the highest visibility are March, April, October, November and December (6mi).
The months with the lowest visibility are January, February, May, June, July, August and September (5mi).
Bolton, Massachusetts, USA
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