December weather forecastBement, IL
December
Weather in December
The first month of the winter, December, is also a wintry month in Bement, Illinois, with an average temperature fluctuating between 27.7°F (-2.4°C) and 38.3°F (3.5°C).Temperature
A change in temperatures is noted as November gives way to December, with average highs reducing from a chilly 49.5°F (9.7°C) to an icy 38.3°F (3.5°C). Throughout the month of December, the nighttime temperature in Bement, Illinois, dips to an average of 27.7°F (-2.4°C).Humidity
The average relative humidity in December is 79%.Rainfall
In Bement, in December, it is raining for 8.4 days, with typically 1.18" (30mm) of accumulated precipitation. Throughout the year, there are 143.6 rainfall days, and 21.57" (548mm) of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall. In Bement, in December, snow falls for 6.9 days, with typically accumulated 1.38" (35mm) of snow. Throughout the year, there are 28.9 snowfall days, and 7.01" (178mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 24min of daylight.On the first day of December in Bement, sunrise is at 6:57 am and sunset at 4:29 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 4:39 pm CST.
Sunshine
In Bement, the average sunshine in December is 4.5h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for the average person.Note: In December, the UV index of 2 transforms into the following advice:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Bement, IL
- Average high temperature in December: 38.3°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (32.5°F).
- Average low temperature in December: 27.7°F
The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (20.8°F).
Average pressure in December
Bement, IL
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Bement, IL
- Average wind speed in December: 10.1mph
The windiest month (with the highest average wind speed) is January (10.9mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in December
Bement, IL
- Average humidity in December: 79%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (70%).
Average rainfall in December
Bement, IL
- Average rainfall in December: 1.18"
The wettest months (with the highest rainfall) are April and May (2.56").
The driest month (with the least rainfall) is September (1.14").
Average rainfall days in December
Bement, IL
- Average rainfall days in December: 8.4 days
The month with the highest number of rainy days is May (16.5 days).
The month with the least rainy days is February (6.5 days).
Average snowfall in December
Bement, IL
- Average snowfall in December: 1.38"
The month with the highest snowfall is January (2.28").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Bement, IL
- Average snowfall days in December: 6.9 days
The month with the highest number of snowfall days is January (9.3 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
Bement, IL
- Average daylight in December: 9h and 24min
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 30min
The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in December
Bement, IL
- Average sunshine days in December: 16.1 days
The months with the most sunshine days are October and November (18.1 days).
The month with the least sunshine days is July (10.5 days).
Average UV index in December
Bement, IL
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Bement, IL
- Average cloud cover in December: 53
The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are June and September (Cloud cover 31).
Average visibility in December
Bement, 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).
