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 results in a small decrease in the average high-temperature, moderately receding from a fresh 50.9°F (10.5°C) in November to a frosty 43.2°F (6.2°C). In East Sandwich, the month of December records an average minimum temperature of 35.4°F (1.9°C), a slight dip from the daily highs.Humidity
The average relative humidity in December is 75%.Rainfall
In December, the rain falls for 9.8 days. Throughout December, 1.73" (44mm) of precipitation is accumulated. Throughout the year, there are 138.1 rainfall days, and 18.74" (476mm) of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall. In East Sandwich, in December, during 3.2 snowfall days, 0.63" (16mm) of snow is typically accumulated. Throughout the year, there are 20 snowfall days, and 4.21" (107mm) 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 6:50 am and sunset at 4:12 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 4:21 pm EST.
Sunshine
The months with the least sunshine are February and December, with an average of 4.6h of sunshine.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 estimate of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the average person.Note: In December, the maximum UV index of 2 suggests this advice:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is December cold?
What is the average humidity in December?
How much does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
What time are sunrise and sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does East Sandwich have in December?
When is the lowest UV index in East Sandwich?
How high is the UV index in December in East Sandwich?
Average temperature in December
East Sandwich, MA
- Average high temperature in December: 43.2°F
The warmest month (with the highest average high temperature) is August (73.8°F).
The month with the lowest average high temperature is January (37.4°F).
- Average low temperature in December: 35.4°F
The months with the highest average low temperature are July and August (67.1°F).
The coldest month (with the lowest average low temperature) is January (29.1°F).
Average pressure in December
East Sandwich, 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
East Sandwich, MA
- Average wind speed in December: 14.5mph
The windiest month (with the highest average wind speed) is January (15.2mph).
The calmest month (with the lowest average wind speed) is August (9.5mph).
Average humidity in December
East Sandwich, MA
- Average humidity in December: 75%
The months with the highest relative humidity are June and July (82%).
The month with the lowest relative humidity is November (74%).
Average rainfall in December
East Sandwich, MA
- Average rainfall in December: 1.73"
The wettest month (with the highest rainfall) is October (2.2").
The driest month (with the least rainfall) is February (1.26").
Average rainfall days in December
East Sandwich, MA
- Average rainfall days in December: 9.8 days
The month with the highest number of rainy days is July (14.3 days).
The month with the least rainy days is February (8 days).
Average snowfall in December
East Sandwich, MA
- Average snowfall in December: 0.63"
The month with the highest snowfall is March (1.3").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
East Sandwich, MA
- Average snowfall days in December: 3.2 days
The months with the highest number of snowfall days are January and February (5.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
East Sandwich, 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 36min).
The months with the least sunshine are February and December (Average sunshine: 4h and 36min).
Average sunshine days in December
East Sandwich, MA
- Average sunshine days in December: 17.6 days
The month with the most sunshine days is December (17.6 days).
The month with the least sunshine days is July (14.8 days).
Average UV index in December
East Sandwich, MA
- Average UV index in December: 2
The month with the highest UV index is July (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
East Sandwich, MA
- Average cloud cover in December: 50
The months with the most cloud cover are February, March and December (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in December
East Sandwich, 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).
East Sandwich, Massachusetts, USA
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