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 introduces a moderate change in Brockton's weather, with average high-temperatures falling from November's cool 50.4°F (10.2°C) to a cold 40.5°F (4.7°C). Brockton, in December, observes a steady average low-temperature of 29.7°F (-1.3°C).Humidity
In December, the average relative humidity in Brockton, Massachusetts, is 77%.Rainfall
December is the month with the most rainfall in Brockton. Rain falls for 10.4 days and accumulates 3.11" (79mm) of precipitation.Snowfall
Months with snowfall in Brockton are January through May, November and December. In December, it is snowing for 4.5 days. Throughout December, 2.52" (64mm) of snow is accumulated. Throughout the year, in Brockton, there are 27.4 snowfall days, and 15" (381mm) of snow is accumulated.Daylight
With an average of 9h and 12min of daylight, December has the shortest days of the year.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, in Brockton, sunrise is at 7:12 am and sunset at 4:22 pm EST.
Sunshine
In December, the average sunshine in Brockton is 4.7h.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum UV index of 2 during December leads to these instructions:
Children necessitate constant protection from sunlight, unlike the majority, who can remain under the sun for about an hour without burning. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Frequently asked questions
How cold is it in Brockton in December?
What is the average humidity in December in Brockton?
What is the wettest month in Brockton?
How much does it rain in Brockton in December?
How many days does it snow in December in Brockton?
What is the month with the shortest days in Brockton?
How many hours of daylight does Brockton have in December?
What time are sunrise and sunset in December in Brockton?
How long on average sun shines in December in Brockton?
What are the months with the lowest UV index in Brockton?
What is the UV index intensity in December in Brockton?
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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