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 commencement of December indicates a gentle shift in the average high-temperature, receding from November's cool 51.3°F (10.7°C) to a frosty 44.4°F (6.9°C). December nights witness a slight temperature decrease, averaging at a wintry 37.6°F (3.1°C).Humidity
In December, the average relative humidity in East Harwich is 75%.Rainfall
In East Harwich, during December, the rain falls for 11.2 days and regularly aggregates up to 2.05" (52mm) of precipitation. Throughout the year, there are 142.4 rainfall days, and 22.09" (561mm) of precipitation is accumulated.Snowfall
Months with snowfall in East Harwich are January through April, November and December. In East Harwich, during December, snow falls for 4.7 days and regularly aggregates up to 0.67" (17mm) of snow. Throughout the year, there are 20.8 snowfall days, and 4.37" (111mm) of snow is accumulated.Daylight
December has the shortest days of the year in East Harwich, with an average of 9h and 12min of daylight.On the first day of December, sunrise is at 6:48 am and sunset at 4:10 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 4:19 pm EST.
Sunshine
The month with the least sunshine is December, with an average of 4.3h of sunshine.UV index
The months with the lowest UV index in East Harwich 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 vulnerability from unsafe exposure to UV radiation for average individuals.Note: A maximum high UV index of 2 in December translates into the following recommendations:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Frequently asked questions
Is it cold in East Harwich during December?
What is the average humidity in December in East Harwich?
How much does it rain in East Harwich in December?
How much does it snow in East Harwich in December?
What is the month with the shortest days in East Harwich?
How many hours of daylight does East Harwich have in December?
When is the sunrise / sunset in December in East Harwich?
What is the month with the least sunshine in East Harwich?
How many hours of sunshine does East Harwich have in December?
What is the month with the lowest UV index in East Harwich?
How high is the UV index in December in East Harwich?
Average temperature in December
East Harwich, MA
- Average high temperature in December: 44.4°F
The warmest month (with the highest average high temperature) is August (71.6°F).
The months with the lowest average high temperature are January and February (39°F).
- Average low temperature in December: 37.6°F
The month with the highest average low temperature is August (68.2°F).
The coldest month (with the lowest average low temperature) is January (31.6°F).
Average pressure in December
East Harwich, MA
- Average pressure in December: 30.02"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 Harwich, MA
- Average wind speed in December: 17.5mph
The windiest month (with the highest average wind speed) is January (18mph).
The calmest month (with the lowest average wind speed) is August (11.4mph).
Average humidity in December
East Harwich, MA
- Average humidity in December: 75%
The months with the highest relative humidity are June and July (85%).
The month with the lowest relative humidity is November (74%).
Average rainfall in December
East Harwich, MA
- Average rainfall in December: 2.05"
The wettest month (with the highest rainfall) is October (2.83").
The driest month (with the least rainfall) is November (1.46").
Average rainfall days in December
East Harwich, MA
- Average rainfall days in December: 11.2 days
The month with the highest number of rainy days is May (14.6 days).
The month with the least rainy days is February (8.3 days).
Average snowfall in December
East Harwich, MA
- Average snowfall in December: 0.67"
The month with the highest snowfall is February (1.38").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
East Harwich, MA
- Average snowfall days in December: 4.7 days
The month with the highest number of snowfall days is January (6 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 Harwich, 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 2min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 4h and 18min).
Average sunshine days in December
East Harwich, MA
- Average sunshine days in December: 13.6 days
The month with the most sunshine days is August (17.6 days).
The month with the least sunshine days is January (13 days).
Average UV index in December
East Harwich, 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
East Harwich, MA
- Average cloud cover in December: 54
The month with the most cloud cover is December (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in December
East Harwich, 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 Harwich, Massachusetts, USA
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