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 arrival of December corresponds with a shift in temperature, down from a chilly 49.1°F (9.5°C) in November to a cold 39°F (3.9°C). Arlington Heights's average low-temperature for the month of December records at a subzero cold 29.1°F (-1.6°C).Humidity
The average relative humidity in December is 76%.Rainfall
The month with the most rainfall in Arlington Heights, Massachusetts, is December, when the rain falls for 9.5 days and typically aggregates up to 2.95" (75mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Arlington Heights, during December, snow falls for 5.5 days and regularly aggregates up to 4.25" (108mm) of snow. Throughout the year, in Arlington Heights, there are 29.6 snowfall days, and 17.8" (452mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 6min of daylight.On the first day of the month, sunrise is at 6:55 am and sunset at 4:12 pm. On the last day of December, in Arlington Heights, sunrise is at 7:13 am and sunset at 4:22 pm EST.
Sunshine
In December, the average sunshine in Arlington Heights is 4.9h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index, 2 in December, converts into the following recommendations:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Frequently asked questions
How cold does it get in Arlington Heights in December?
What is the average humidity in December in Arlington Heights?
What is the wettest month in Arlington Heights?
How much does it rain in Arlington Heights in December?
How many days does it snow in December in Arlington Heights?
What is the month with the shortest days in Arlington Heights?
How many hours of daylight does Arlington Heights have in December?
When are sunrise and sunset in December in Arlington Heights?
How long on average sun shines in December in Arlington Heights?
What is the month with the lowest UV index in Arlington Heights?
What is the UV index reading in December in Arlington Heights?
Average temperature in December
Arlington Heights, MA
- Average high temperature in December: 39°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in December: 29.1°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (21.7°F).
Average pressure in December
Arlington Heights, MA
- Average pressure in December: 30.03"Hg
The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Arlington Heights, MA
- Average wind speed in December: 8.8mph
The windiest month (with the highest average wind speed) is January (9.4mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).
Average humidity in December
Arlington Heights, MA
- Average humidity in December: 76%
The month with the highest relative humidity is February (78%).
The month with the lowest relative humidity is April (70%).
Average rainfall in December
Arlington Heights, MA
- Average rainfall in December: 2.95"
The wettest month (with the highest rainfall) is December (2.95").
The driest month (with the least rainfall) is September (1.3").
Average rainfall days in December
Arlington Heights, MA
- Average rainfall days in December: 9.5 days
The months with the highest number of rainy days are May and July (15.3 days).
The month with the least rainy days is January (7.8 days).
Average snowfall in December
Arlington Heights, MA
- Average snowfall in December: 4.25"
The month with the highest snowfall is February (4.72").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Arlington Heights, MA
- Average snowfall days in December: 5.5 days
The month with the highest number of snowfall days is January (7.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Arlington Heights, 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
Arlington Heights, MA
- Average sunshine days in December: 16.8 days
The month with the most sunshine days is November (17.6 days).
The month with the least sunshine days is April (13.3 days).
Average UV index in December
Arlington Heights, 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
Arlington Heights, 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
Arlington Heights, MA
- Average visibility in December: 6mi
The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is February (5mi).
Arlington Heights, Massachusetts, USA
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