December weather forecastBradley, IL
December
Weather in December
December, the first month of the winter in Bradley, is also a wintry month, with an average temperature varying between 36.1°F (2.3°C) and 25.9°F (-3.4°C).Temperature
The onset of December coincides with a reduction in the average high-temperature, falling from a frosty 47.3°F (8.5°C) in November to a cold 36.1°F (2.3°C). During the nights in December, Bradley observes an average low-temperature of 25.9°F (-3.4°C).Humidity
In December, the average relative humidity is 81%.Rainfall
In Bradley, in December, it is raining for 3.8 days, with typically 0.35" (9mm) of accumulated precipitation. Throughout the year, there are 80.5 rainfall days, and 6.22" (158mm) of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall. In Bradley, in December, during 4.5 snowfall days, 0.16" (4mm) of snow is typically accumulated. Throughout the year, there are 20.5 snowfall days, and 2.17" (55mm) of snow is accumulated.Daylight
The month with the shortest days in Bradley, Illinois, is December, with an average of 9h and 18min of daylight.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 Bradley, sunrise is at 7:16 am and sunset at 4:32 pm CST.
Sunshine
The average sunshine in December is 4.2h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index in Bradley. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for the average person.Note: The maximum UV index of 1 during December translates into these guidelines:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Opt for tightly woven and loose clothing to enhance protection from the Sun. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Bradley, 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
Bradley, 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
Bradley, 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
Bradley, 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
Bradley, 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
Bradley, 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
Bradley, 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
Bradley, 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
Bradley, IL
- Average daylight in December: 9h and 18min
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 12min
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
Bradley, 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
Bradley, 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
Bradley, 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
Bradley, 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).
