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
Observing a mild shift, the average high-temperature during December reduces from November's cool 52.7°F (11.5°C) to an icy 41.5°F (5.3°C). In December, the average low-temperature is a freezing cold 30°F (-1.1°C).Humidity
In Brussels, the average relative humidity in December is 76%.Rainfall
In Brussels, during December, the rain falls for 6.8 days and regularly aggregates up to 1.5" (38mm) of precipitation. Throughout the year, in Brussels, there are 138.8 rainfall days, and 27.6" (701mm) of precipitation is accumulated.Snowfall
Months with snowfall in Brussels are January through March, November and December. In Brussels, in December, snow falls for 3.9 days, with typically accumulated 1.14" (29mm) of snow. Throughout the year, there are 17.9 snowfall days, and 5.12" (130mm) of snow is accumulated.Daylight
December has the shortest days of the year in Brussels, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 7:02 am and sunset at 4:40 pm. On the last day of December, sunrise is at 7:20 am and sunset at 4:50 pm CST.
Sunshine
The average sunshine in December in Brussels is 4.8h.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 reading of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for average individuals.Note: In December, the UV index of 2 transforms into the following advice:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Frequently asked questions
How cold is it in Brussels in December?
What is the average humidity in December in Brussels?
How many days does it rain in December in Brussels?
How many days does it snow in December in Brussels?
What is the month with the shortest days in Brussels?
What is the average length of the day in December in Brussels?
What time are sunrise and sunset in December in Brussels?
How long on average sun shines in December in Brussels?
When is the lowest UV index in Brussels?
What is the UV index reading in December in Brussels?
Average temperature in December
Brussels, IL
- Average high temperature in December: 41.5°F
The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (36.1°F).
- Average low temperature in December: 30°F
The month with the highest average low temperature is July (68.2°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).
Average pressure in December
Brussels, IL
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Brussels, IL
- Average wind speed in December: 8.8mph
The windiest month (with the highest average wind speed) is January (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity in December
Brussels, IL
- Average humidity in December: 76%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Brussels, IL
- Average rainfall in December: 1.5"
The wettest month (with the highest rainfall) is May (3.35").
The driest month (with the least rainfall) is February (1.3").
Average rainfall days in December
Brussels, IL
- Average rainfall days in December: 6.8 days
The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is January (6.3 days).
Average snowfall in December
Brussels, IL
- Average snowfall in December: 1.14"
The months with the highest snowfall are January and February (1.54").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Brussels, IL
- Average snowfall days in December: 3.9 days
The month with the highest number of snowfall days is January (5.7 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
Brussels, IL
- Average daylight in December: 9h and 3min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 4h and 5min
The months with the most sunshine are June and July (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 36min).
Average sunshine days in December
Brussels, IL
- Average sunshine days in December: 19.8 days
The month with the most sunshine days is December (19.8 days).
The month with the least sunshine days is June (11.2 days).
Average UV index in December
Brussels, IL
- Average UV index in December: 2
The months with the highest UV index are May, 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
Brussels, IL
- Average cloud cover in December: 48
The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in December
Brussels, 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).
Brussels, Illinois, USA
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