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 average high-temperature drops in December, from November's cool 50.4°F (10.2°C) to an icy 40.5°F (4.7°C). Nightly temperatures drop to an average low of 29.7°F (-1.3°C) in December.Humidity
In Brockton, the average relative humidity in December is 77%.Rainfall
December is the month with the most rainfall. Rain falls for 10.4 days and accumulates 3.11" (79mm) of precipitation.Snowfall
January through May, November and December are months with snowfall. In Brockton, in December, during 4.5 snowfall days, 2.52" (64mm) of snow is typically accumulated. In Brockton, during the entire year, snow falls for 27.4 days and aggregates up to 15" (381mm) of snow.Daylight
With an average of 9h and 12min of daylight, December has the shortest days of the year in Brockton.On the first day of the month, sunrise is at 6:53 am and sunset at 4:13 pm. On the last day of December, sunrise is at 7:12 am and sunset at 4:22 pm EST.
Sunshine
In Brockton, the average sunshine in December is 4.7h.UV index
The months with the lowest UV index in Brockton 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 exposure to the Sun's UV radiation for average individuals.Note: The maximum daily UV index, 2 in December, converts into the following recommendations:
Although prolonged sun exposure does not typically bother most people, children, babies, and those with sensitive skin should always have protection. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Always opt for UVA and UVB-resistant sunglasses on radiant days. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What is the average humidity in December?
What is the wettest month?
How much does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Brockton have in December?
When are sunrise and sunset in December in Brockton?
How long on average sun shines in December?
When is the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Brockton, MA
- Average high temperature in December: 40.5°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 (34.5°F).
- Average low temperature in December: 29.7°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (22.8°F).
Average pressure in December
Brockton, 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 (29.93"Hg).
Average wind speed in December
Brockton, MA
- Average wind speed in December: 8.5mph
The windiest month (with the highest average wind speed) is March (9.1mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in December
Brockton, MA
- Average humidity in December: 77%
The month with the highest relative humidity is February (78%).
The month with the lowest relative humidity is April (71%).
Average rainfall in December
Brockton, 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 (1.42").
Average rainfall days in December
Brockton, MA
- Average rainfall days in December: 10.4 days
The month with the highest number of rainy days is July (15.9 days).
The month with the least rainy days is February (7.8 days).
Average snowfall in December
Brockton, MA
- Average snowfall in December: 2.52"
The month with the highest snowfall is March (4.17").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Brockton, MA
- Average snowfall days in December: 4.5 days
The month with the highest number of snowfall days is January (7.4 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Brockton, 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 12min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in December
Brockton, MA
- Average sunshine days in December: 16.5 days
The month with the most sunshine days is November (17.9 days).
The month with the least sunshine days is July (13.1 days).
Average UV index in December
Brockton, 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
Brockton, MA
- Average cloud cover in December: 49
The month with the most cloud cover is March (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in December
Brockton, 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).
Brockton, Massachusetts, USA
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