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
With December's onset, the average high-temperature recedes from November's cool 53.6°F (12°C) to a frosty 43.2°F (6.2°C). Nighttime temperatures in Columbia consistently average a subzero cold 30.7°F (-0.7°C) during December.Humidity
In December, the average relative humidity in Columbia is 76%.Rainfall
In Columbia, in December, during 8.5 rainfall days, 2.01" (51mm) of precipitation is typically accumulated. Throughout the year, in Columbia, there are 141 rainfall days, and 29.29" (744mm) of precipitation is accumulated.Snowfall
January through March, November and December are months with snowfall in Columbia. In Columbia, during December, snow falls for 3.5 days and regularly aggregates up to 1.77" (45mm) of snow. In Columbia, Illinois, during the entire year, snow falls for 18.3 days and aggregates up to 7.72" (196mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 6:59 am and sunset at 4:40 pm. On the last day of December, in Columbia, sunrise is at 7:17 am and sunset at 4:50 pm CST.
Sunshine
In December, the average sunshine in Columbia is 4.9h.UV index
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for average individuals.Note: A maximum high UV index of 2 in December translates into the following recommendations:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. Around midday, solar radiation is most harmful; hence, exposure should be limited. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Frequently asked questions
How cold does it get in Columbia in December?
What is the average humidity in December in Columbia?
How many days does it rain in December in Columbia?
How much does it snow in Columbia in December?
What is the month with the shortest days in Columbia?
What is the average length of the day in December in Columbia?
When are sunrise and sunset in December in Columbia?
How many hours of sunshine does Columbia have in December?
What is the month with the lowest UV index in Columbia?
How high is the UV index in December in Columbia?
Average temperature in December
Columbia, IL
- Average high temperature in December: 43.2°F
The warmest month (with the highest average high temperature) is July (86.9°F).
The month with the lowest average high temperature is January (37.9°F).
- Average low temperature in December: 30.7°F
The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).
Average pressure in December
Columbia, 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
Columbia, IL
- Average wind speed in December: 8.5mph
The windiest month (with the highest average wind speed) is January (9.2mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).
Average humidity in December
Columbia, 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
Columbia, IL
- Average rainfall in December: 2.01"
The wettest month (with the highest rainfall) is May (3.58").
The driest months (with the least rainfall) are February and November (1.57").
Average rainfall days in December
Columbia, IL
- Average rainfall days in December: 8.5 days
The month with the highest number of rainy days is July (16 days).
The month with the least rainy days is February (6.8 days).
Average snowfall in December
Columbia, IL
- Average snowfall in December: 1.77"
The month with the highest snowfall is February (2.24").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Columbia, IL
- Average snowfall days in December: 3.5 days
The month with the highest number of snowfall days is January (6.2 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
Columbia, IL
- Average daylight in December: 9h and 3min
The month with the longest days is June (Average daylight: 14h and 48min).
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 month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days in December
Columbia, IL
- Average sunshine days in December: 20 days
The month with the most sunshine days is October (20.2 days).
The month with the least sunshine days is June (12.3 days).
Average UV index in December
Columbia, 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 and December (UV index 2).
Average cloud cover in December
Columbia, IL
- Average cloud cover in December: 48
The month with the most cloud cover is January (Cloud cover 50).
The months with the least cloud cover are June, July and August (Cloud cover 28).
Average visibility in December
Columbia, 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).
Columbia, Illinois, USA
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