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
December's arrival comes with a decrease in the average high-temperature, moving from a chilly 47.3°F (8.5°C) in November to a cold 36.1°F (2.3°C). An average temperature of 25.9°F (-3.4°C) is recorded in Bourbonnais during the nights in December.Humidity
The average relative humidity in December in Bourbonnais, Illinois, is 81%.Rainfall
In Bourbonnais, in December, during 3.8 rainfall days, 0.35" (9mm) of precipitation is typically accumulated. Throughout the year, in Bourbonnais, there are 80.5 rainfall days, and 6.22" (158mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, November and December. In Bourbonnais, in December, snow falls for 4.5 days, with typically accumulated 0.16" (4mm) of snow. In Bourbonnais, during the entire year, snow falls for 20.5 days and aggregates up to 2.17" (55mm) of snow.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 6:58 am and sunset at 4:23 pm. On the last day of December, in Bourbonnais, sunrise is at 7:16 am and sunset at 4:32 pm CST.
Sunshine
In December, the average sunshine in Bourbonnais is 4.2h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index in Bourbonnais. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the ordinary person.Note: An average UV index of 1 in December transforms into this advice:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Bourbonnais?
What is the average humidity in December in Bourbonnais?
How much does it rain in Bourbonnais in December?
How much does it snow in Bourbonnais in December?
What is the month with the shortest days in Bourbonnais?
How many hours of daylight does Bourbonnais have in December?
When is the sunrise / sunset in December in Bourbonnais?
How many hours of sunshine does Bourbonnais have in December?
What is the month with the lowest UV index in Bourbonnais?
What is the UV index intensity in December in Bourbonnais?
Average temperature in December
Bourbonnais, IL
- Average high temperature in December: 36.1°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (30°F).
- Average low temperature in December: 25.9°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).
Average pressure in December
Bourbonnais, IL
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Bourbonnais, IL
- Average wind speed in December: 9.5mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).
Average humidity in December
Bourbonnais, IL
- Average humidity in December: 81%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Bourbonnais, IL
- Average rainfall in December: 0.35"
The wettest month (with the highest rainfall) is May (1.06").
The driest month (with the least rainfall) is November (0.28").
Average rainfall days in December
Bourbonnais, IL
- Average rainfall days in December: 3.8 days
The month with the highest number of rainy days is May (11.4 days).
The month with the least rainy days is January (2.3 days).
Average snowfall in December
Bourbonnais, IL
- Average snowfall in December: 0.16"
The month with the highest snowfall is January (0.75").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Bourbonnais, IL
- Average snowfall days in December: 4.5 days
The month with the highest number of snowfall days is January (5.8 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
Bourbonnais, IL
- 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 1min
The month with the most sunshine is August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in December
Bourbonnais, IL
- Average sunshine days in December: 24.4 days
The month with the most sunshine days is January (24.8 days).
The month with the least sunshine days is June (15.7 days).
Average UV index in December
Bourbonnais, IL
- Average UV index in December: 1
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Bourbonnais, IL
- Average cloud cover in December: 57
The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are August and September (Cloud cover 33).
Average visibility in December
Bourbonnais, IL
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Bourbonnais, Illinois, USA
Weather forecast for your location
2. Allow the app to use your location