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, Cambridge's weather changes as the average high-temperature falls from a chilly 49.5°F (9.7°C) in November to an icy 39.6°F (4.2°C). Throughout the month of December, Cambridge reports a steady low-temperature average of 29.3°F (-1.5°C).Humidity
In Cambridge, the average relative humidity in December is 76%.Rainfall
In Cambridge, Massachusetts, in December, during 5.6 rainfall days, 0.55" (14mm) of precipitation is typically accumulated. Throughout the year, there are 81.8 rainfall days, and 5.51" (140mm) of precipitation is accumulated.Snowfall
Months with snowfall in Cambridge are January through May, November and December. The month with the most snowfall in Cambridge, Massachusetts, is December, when snow falls for 2.7 days and typically aggregates up to 0.71" (18mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 6min of daylight.On the first day of December in Cambridge, sunrise is at 6:54 am and sunset at 4:12 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 4:21 pm EST.
Sunshine
In December, the average sunshine in Cambridge is 4.9h.UV index
The months with the lowest UV index in Cambridge, Massachusetts, 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 low health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum daily UV index of 2 in December interprets into the following recommendations:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Frequently asked questions
How cold does it get in Cambridge in December?
What is the average humidity in December in Cambridge?
How much does it rain in Cambridge in December?
When does it snow the most in Cambridge?
How much does it snow in Cambridge in December?
What is the month with the shortest days in Cambridge?
How many hours of daylight does Cambridge have in December?
When is the sunrise / sunset in December in Cambridge?
How many hours of sunshine does Cambridge have in December?
What are the months with the lowest UV index in Cambridge?
What is the UV index reading in December in Cambridge?
Average temperature in December
Cambridge, MA
- Average high temperature in December: 39.6°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 (33.8°F).
- Average low temperature in December: 29.3°F
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).
Average pressure in December
Cambridge, 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
Cambridge, MA
- Average wind speed in December: 9mph
The windiest month (with the highest average wind speed) is January (9.5mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in December
Cambridge, MA
- Average humidity in December: 76%
The months with the highest relative humidity are January and February (77%).
The month with the lowest relative humidity is April (69%).
Average rainfall in December
Cambridge, MA
- Average rainfall in December: 0.55"
The wettest month (with the highest rainfall) is November (0.63").
The driest month (with the least rainfall) is September (0.2").
Average rainfall days in December
Cambridge, MA
- Average rainfall days in December: 5.6 days
The month with the highest number of rainy days is July (9.6 days).
The month with the least rainy days is January (4.3 days).
Average snowfall in December
Cambridge, MA
- Average snowfall in December: 0.71"
The month with the highest snowfall is December (0.71").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Cambridge, MA
- Average snowfall days in December: 2.7 days
The month with the highest number of snowfall days is January (4.8 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
Cambridge, 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 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in December
Cambridge, MA
- Average sunshine days in December: 23 days
The month with the most sunshine days is January (23.5 days).
The month with the least sunshine days is June (17.4 days).
Average UV index in December
Cambridge, 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
Cambridge, 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 32).
Average visibility in December
Cambridge, 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).
Cambridge, Massachusetts, USA
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