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
Glendale Heights's weather changes with the onset of December, slightly falling from a chilly 45.5°F (7.5°C) in November to a wintry 34.3°F (1.3°C). In Glendale Heights, the expected average low-temperature for December is a subzero cold 24.1°F (-4.4°C).Humidity
The average relative humidity in December in Glendale Heights is 81%.Rainfall
February, November and December are months with the least rain when the rain falls for 5.7 days and typically aggregates up to 0.51" (13mm) of rain.Snowfall
January through April, October through December are months with snowfall in Glendale Heights. In Glendale Heights, in December, during 7.1 snowfall days, 0.47" (12mm) of snow is typically accumulated. Throughout the year, there are 34.4 snowfall days, and 5.2" (132mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 12min of daylight.On the first day of the month, sunrise is at 7:01 am and sunset at 4:22 pm. On the last day of December, in Glendale Heights, sunrise is at 7:19 am and sunset at 4:31 pm CST.
Sunshine
In December, the average sunshine in Glendale Heights is 4.1h.UV index
The months with the lowest UV index in Glendale Heights are January and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum daily UV index, 1 in December, converts into the following recommendations:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
Frequently asked questions
How cold is December in Glendale Heights?
What is the average humidity in December in Glendale Heights?
What is the driest month in Glendale Heights?
How much does it rain in Glendale Heights in December?
How much does it snow in Glendale Heights in December?
What is the month with the shortest days in Glendale Heights?
What is the average length of the day in December in Glendale Heights?
What time are sunrise and sunset in December in Glendale Heights?
How long on average sun shines in December in Glendale Heights?
When is the lowest UV index in Glendale Heights?
What is the UV index intensity in December in Glendale Heights?
Average temperature in December
Glendale Heights, IL
- Average high temperature in December: 34.3°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in December: 24.1°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).
Average pressure in December
Glendale Heights, IL
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Glendale Heights, IL
- Average wind speed in December: 9.1mph
The windiest month (with the highest average wind speed) is January (9.8mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).
Average humidity in December
Glendale Heights, IL
- Average humidity in December: 81%
The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall in December
Glendale Heights, IL
- Average rainfall in December: 0.51"
The wettest month (with the highest rainfall) is May (1.65").
The driest months (with the least rainfall) are February, November and December (0.51").
Average rainfall days in December
Glendale Heights, IL
- Average rainfall days in December: 5.7 days
The month with the highest number of rainy days is June (15 days).
The month with the least rainy days is January (4.1 days).
Average snowfall in December
Glendale Heights, IL
- Average snowfall in December: 0.47"
The month with the highest snowfall is January (1.5").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Glendale Heights, IL
- Average snowfall days in December: 7.1 days
The month with the highest number of snowfall days is January (9.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Glendale Heights, IL
- 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 1min
The months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in December
Glendale Heights, IL
- Average sunshine days in December: 20.5 days
The month with the most sunshine days is November (20.6 days).
The month with the least sunshine days is July (11.3 days).
Average UV index in December
Glendale Heights, IL
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Glendale Heights, IL
- Average cloud cover in December: 59
The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are July, August and September (Cloud cover 32).
Average visibility in December
Glendale Heights, IL
- 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).
Glendale Heights, Illinois, USA
Weather forecast for your location
2. Allow the app to use your location
