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
In Arlington Heights, entering December brings a temperature decrement, reducing from November's chilly 48.4°F (9.1°C) to a cold 38.5°F (3.6°C). December brings with it a nighttime average temperature of 26.8°F (-2.9°C).Humidity
The months with the highest humidity are February, October and December, with an average relative humidity of 82%.Rainfall
In December, the rain falls for 11.9 days. Throughout December, 3.07" (78mm) of precipitation is accumulated. Throughout the year, in Arlington Heights, Pennsylvania, there are 161.8 rainfall days, and 32.24" (819mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Arlington Heights, during December, snow falls for 7.5 days and regularly aggregates up to 3.58" (91mm) of snow. In Arlington Heights, during the entire year, snow falls for 38.6 days and aggregates up to 19.76" (502mm) of snow.Daylight
December has the shortest days of the year in Arlington Heights, with an average of 9h and 18min of daylight.On the first day of the month, sunrise is at 7:06 am and sunset at 4:33 pm. On the last day of December, sunrise is at 7:25 am and sunset at 4:42 pm EST.
Sunshine
The average sunshine in December in Arlington Heights, Pennsylvania, is 4.4h.UV index
With an average maximum UV index of 1, December is the month with the lowest UV index in Arlington Heights. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for the average person.Note: A maximum daily UV index of 1 during December morphs into the following directions:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Frequently asked questions
Is it cold in Arlington Heights during December?
What is the most humid month in Arlington Heights?
What is the average humidity in December in Arlington Heights?
How much does it rain in Arlington Heights in December?
How much does it snow in Arlington Heights in December?
What is the month with the shortest days in Arlington Heights?
What is the average length of the day in December in Arlington Heights?
When are sunrise and sunset in December in Arlington Heights?
How long on average sun shines in December in Arlington Heights?
When is the lowest UV index in Arlington Heights?
How high is the UV index in December in Arlington Heights?
Average temperature in December
Arlington Heights, PA
- Average high temperature in December: 38.5°F
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (32.5°F).
- Average low temperature in December: 26.8°F
The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is January (19.9°F).
Average pressure in December
Arlington Heights, PA
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Arlington Heights, PA
- Average wind speed in December: 7.4mph
The windiest months (with the highest average wind speed) are January and March (8mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in December
Arlington Heights, PA
- Average humidity in December: 82%
The months with the highest relative humidity are February, October and December (82%).
The months with the lowest relative humidity are April and July (77%).
Average rainfall in December
Arlington Heights, PA
- Average rainfall in December: 3.07"
The wettest month (with the highest rainfall) is July (3.19").
The driest month (with the least rainfall) is September (1.81").
Average rainfall days in December
Arlington Heights, PA
- Average rainfall days in December: 11.9 days
The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is January (8.8 days).
Average snowfall in December
Arlington Heights, PA
- Average snowfall in December: 3.58"
The month with the highest snowfall is February (5.59").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Arlington Heights, PA
- Average snowfall days in December: 7.5 days
The month with the highest number of snowfall days is January (10.6 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, PA
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 4h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 6min).
Average sunshine days in December
Arlington Heights, PA
- Average sunshine days in December: 14.8 days
The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is April (11.1 days).
Average UV index in December
Arlington Heights, PA
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Arlington Heights, PA
- Average cloud cover in December: 53
The month with the most cloud cover is February (Cloud cover 54).
The month with the least cloud cover is July (Cloud cover 36).
Average visibility in December
Arlington Heights, PA
- Average visibility in December: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
Arlington Heights, Pennsylvania, USA
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