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
With December's arrival, Weymouth's weather changes as the average high-temperature falls from a chilly 49.6°F (9.8°C) in November to an icy 40.3°F (4.6°C). Weymouth in December anticipates an average nighttime temperature of 31.1°F (-0.5°C).Humidity
In Weymouth, the average relative humidity in December is 76%.Rainfall
The month with the most rainfall is December, when the rain falls for 11.5 days and typically aggregates up to 3.11" (79mm) of precipitation.Snowfall
Months with snowfall in Weymouth, Massachusetts, are January through April, November and December. In Weymouth, in December, during 4.8 snowfall days, 2.09" (53mm) of snow is typically accumulated. Throughout the year, in Weymouth, there are 28 snowfall days, and 12.48" (317mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 12min of daylight.On the first day of December, sunrise is at 6:53 am and sunset at 4:12 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 4:21 pm EST.
Sunshine
February and December, with an average of 4.8h of sunshine, are months with the least sunshine in Weymouth, Massachusetts.UV index
The months with the lowest UV index in Weymouth 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 threat to health from exposure to the Sun's UV rays for the ordinary person.Note: A maximum daily UV index of 2 during December morphs into the following directions:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Frequently asked questions
How cold is December in Weymouth?
What is the average humidity in December in Weymouth?
What is the wettest month in Weymouth?
How much does it rain in Weymouth in December?
How many days does it snow in December in Weymouth?
What is the month with the shortest days in Weymouth?
What is the average length of the day in December in Weymouth?
When is the sunrise / sunset in December in Weymouth?
What are the months with the least sunshine in Weymouth?
How many hours of sunshine does Weymouth have in December?
What are the months with the lowest UV index in Weymouth?
What is the UV index reading in December in Weymouth?
Average temperature in December
Weymouth, MA
- Average high temperature in December: 40.3°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (34.5°F).
- Average low temperature in December: 31.1°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in December
Weymouth, MA
- Average pressure in December: 30.03"Hg
The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Weymouth, MA
- Average wind speed in December: 10.5mph
The windiest month (with the highest average wind speed) is January (11.1mph).
The calmest month (with the lowest average wind speed) is August (6.9mph).
Average humidity in December
Weymouth, MA
- Average humidity in December: 76%
The months with the highest relative humidity are February, June and September (77%).
The month with the lowest relative humidity is April (72%).
Average rainfall in December
Weymouth, 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 (1.5").
Average rainfall days in December
Weymouth, MA
- Average rainfall days in December: 11.5 days
The month with the highest number of rainy days is July (16.5 days).
The month with the least rainy days is January (8.6 days).
Average snowfall in December
Weymouth, MA
- Average snowfall in December: 2.09"
The month with the highest snowfall is February (3.86").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Weymouth, MA
- Average snowfall days in December: 4.8 days
The month with the highest number of snowfall days is January (8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Weymouth, 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 5min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).
Average sunshine days in December
Weymouth, MA
- Average sunshine days in December: 15.7 days
The month with the most sunshine days is November (17 days).
The month with the least sunshine days is July (12.8 days).
Average UV index in December
Weymouth, MA
- Average UV index in December: 2
The months with the highest UV index are 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
Weymouth, MA
- Average cloud cover in December: 48
The month with the most cloud cover is March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in December
Weymouth, 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).
Weymouth, Massachusetts, USA
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