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 shift from November to December involves a decrease in the average high-temperature, from a frosty 49.1°F (9.5°C) to an icy 37.2°F (2.9°C). Bentley's temperature drops to an average low of 25.7°F (-3.5°C) during the nights of December.Humidity
In December, the average relative humidity is 79%.Rainfall
In Bentley, in December, during 5.6 rainfall days, 0.94" (24mm) of precipitation is typically accumulated. In Bentley, Illinois, during the entire year, the rain falls for 128.2 days and collects up to 20.08" (510mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. In Bentley, in December, during 4.9 snowfall days, 1.06" (27mm) of snow is typically accumulated. In Bentley, Illinois, during the entire year, snow falls for 25.4 days and aggregates up to 7.09" (180mm) of snow.Daylight
With an average of 9h and 24min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:08 am and sunset at 4:38 pm. On the last day of December, sunrise is at 7:27 am and sunset at 4:48 pm CST.
Sunshine
In December, the average sunshine in Bentley is 4.7h.UV index
The average daily maximum UV index in December in Bentley is 2. A UV Index of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The maximum UV index, 2 during December, leads to the following recommendations:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Frequently asked questions
How cold is it in Bentley in December?
What is the average humidity in December in Bentley?
How much does it rain in Bentley in December?
How much does it snow in Bentley in December?
What is the month with the shortest days in Bentley?
How many hours of daylight does Bentley have in December?
When are sunrise and sunset in December in Bentley?
How many hours of sunshine does Bentley have in December?
What is the UV index intensity in December in Bentley?
Average temperature in December
Bentley, IL
- Average high temperature in December: 37.2°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (31.3°F).
- Average low temperature in December: 25.7°F
The month with the highest average low temperature is July (66.2°F).
The coldest month (with the lowest average low temperature) is January (19.2°F).
Average pressure in December
Bentley, IL
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in December
Bentley, IL
- Average wind speed in December: 9.9mph
The windiest month (with the highest average wind speed) is January (10.5mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).
Average humidity in December
Bentley, IL
- Average humidity in December: 79%
The month with the highest relative humidity is July (82%).
The month with the lowest relative humidity is October (70%).
Average rainfall in December
Bentley, IL
- Average rainfall in December: 0.94"
The wettest month (with the highest rainfall) is May (2.87").
The driest month (with the least rainfall) is January (0.79").
Average rainfall days in December
Bentley, IL
- Average rainfall days in December: 5.6 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is February (4.6 days).
Average snowfall in December
Bentley, IL
- Average snowfall in December: 1.06"
The month with the highest snowfall is January (2.48").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Bentley, IL
- Average snowfall days in December: 4.9 days
The month with the highest number of snowfall days is January (8.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Bentley, IL
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in December: 4h and 4min
The months with the most sunshine are June and July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in December
Bentley, IL
- Average sunshine days in December: 20.5 days
The month with the most sunshine days is December (20.5 days).
The month with the least sunshine days is June (11.6 days).
Average UV index in December
Bentley, IL
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in December
Bentley, IL
- Average cloud cover in December: 50
The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are July, August and September (Cloud cover 29).
Average visibility in December
Bentley, 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).
Bentley, Illinois, USA
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