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
As November shifts into December, a minor alteration in temperatures is observed, with average highs reducing from a frosty 49.8°F (9.9°C) to a cold 41.2°F (5.1°C). An average temperature of 32.7°F (0.4°C) is logged during the nights of December, a small step down from daytime highs.Humidity
The average relative humidity in December is 76%.Rainfall
In Norwell, in December, during 8.1 rainfall days, 0.98" (25mm) of precipitation is typically accumulated. Throughout the year, there are 119.1 rainfall days, and 10.83" (275mm) of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall. In Norwell, during December, snow falls for 4 days and regularly aggregates up to 0.63" (16mm) of snow. Throughout the year, in Norwell, there are 23.1 snowfall days, and 2.95" (75mm) 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 December in Norwell, Massachusetts, sunrise is at 6:52 am and sunset at 4:12 pm. On the last day of the month, sunrise is at 7:11 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.UV index
The months with the lowest UV index in Norwell are January through March, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for the average person.Note: In December, a daily maximum UV index of 2 leads to the following instructions:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. To cut down UV radiation exposure by about half, sport a wide-brim hat. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Frequently asked questions
How cold is December in Norwell?
What is the average humidity in December in Norwell?
How much does it rain in Norwell in December?
How many days does it snow in December in Norwell?
What is the month with the shortest days in Norwell?
How many hours of daylight does Norwell have in December?
When are sunrise and sunset in December in Norwell?
What is the month with the least sunshine in Norwell?
How many hours of sunshine does Norwell have in December?
When is the lowest UV index in Norwell?
How high is the UV index in December in Norwell?
Average temperature in December
Norwell, MA
- Average high temperature in December: 41.2°F
The warmest month (with the highest average high temperature) is July (76.5°F).
The month with the lowest average high temperature is January (35.6°F).
- Average low temperature in December: 32.7°F
The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (25.9°F).
Average pressure in December
Norwell, 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
Norwell, MA
- Average wind speed in December: 12.2mph
The windiest month (with the highest average wind speed) is January (12.9mph).
The calmest months (with the lowest average wind speed) are July and August (8mph).
Average humidity in December
Norwell, MA
- Average humidity in December: 76%
The months with the highest relative humidity are June and July (79%).
The months with the lowest relative humidity are April and November (74%).
Average rainfall in December
Norwell, MA
- Average rainfall in December: 0.98"
The wettest month (with the highest rainfall) is July (1.26").
The driest month (with the least rainfall) is February (0.67").
Average rainfall days in December
Norwell, MA
- Average rainfall days in December: 8.1 days
The month with the highest number of rainy days is July (13 days).
The month with the least rainy days is February (6.5 days).
Average snowfall in December
Norwell, MA
- Average snowfall in December: 0.63"
The month with the highest snowfall is February (0.79").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Norwell, MA
- Average snowfall days in December: 4 days
The months with the highest number of snowfall days are January and February (6.3 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
Norwell, 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 42min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).
Average sunshine days in December
Norwell, MA
- Average sunshine days in December: 18.6 days
The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is July (15.9 days).
Average UV index in December
Norwell, 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
Norwell, MA
- Average cloud cover in December: 48
The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in December
Norwell, 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).
Norwell, Massachusetts, USA
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