December weather forecastCaledonia, IL
December
Weather in December
December, the first month of the winter in Caledonia, is also an icy month, with temperature in the range of an average low of 21.9°F (-5.6°C) and an average high of 32.4°F (0.2°C).Temperature
A subtle decrease in the average high-temperature marks December, falling from November's chilly 44.1°F (6.7°C) to a cold 32.4°F (0.2°C). Nighttime temperature lowers to an average of 21.9°F (-5.6°C) in December.Humidity
The average relative humidity in December is 83%.Rainfall
In Caledonia, in December, it is raining for 5.3 days, with typically 0.71" (18mm) of accumulated precipitation. In Caledonia, during the entire year, the rain falls for 123.8 days and collects up to 14.49" (368mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. In December, in Caledonia, it is snowing for 8 days. Throughout December, 0.94" (24mm) of snow is accumulated. In Caledonia, during the entire year, snow falls for 38.3 days and aggregates up to 6.57" (167mm) of snow.Daylight
The month with the shortest days in Caledonia is December, with an average of 9h and 6min of daylight.On the first day of December, sunrise is at 7:05 am and sunset at 4:23 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 4:33 pm CST.
Sunshine
In December, the average sunshine in Caledonia is 3.9h.UV index
January and December, with an average maximum UV index of 1, 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: The maximum daily UV index of 1 during December translates into the following directions:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Stay sun-safe with clothing that is both closely woven and worn loosely. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Caledonia, IL
- Average high temperature in December: 32.4°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (25.5°F).
- Average low temperature in December: 21.9°F
The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (13.5°F).
Average pressure in December
Caledonia, IL
- Average pressure in December: 30.09"Hg
The months with the highest atmospheric pressure are January and February (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Caledonia, IL
- Average wind speed in December: 9.3mph
The windiest month (with the highest average wind speed) is April (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in December
Caledonia, IL
- Average humidity in December: 83%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is October (75%).
Average rainfall in December
Caledonia, IL
- Average rainfall in December: 0.71"
The wettest month (with the highest rainfall) is June (2.2").
The driest month (with the least rainfall) is February (0.51").
Average rainfall days in December
Caledonia, IL
- Average rainfall days in December: 5.3 days
The month with the highest number of rainy days is May (16.5 days).
The month with the least rainy days is January (3.8 days).
Average snowfall in December
Caledonia, IL
- Average snowfall in December: 0.94"
The month with the highest snowfall is January (1.93").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Caledonia, IL
- Average snowfall days in December: 8 days
The month with the highest number of snowfall days is January (10.3 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
Caledonia, IL
- Average daylight in December: 9h and 6min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 3h and 54min
The month with the most sunshine is July (Average sunshine: 9h and 42min).
The months with the least sunshine are January and February (Average sunshine: 3h and 36min).
Average sunshine days in December
Caledonia, IL
- Average sunshine days in December: 18.8 days
The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is June (11.4 days).
Average UV index in December
Caledonia, IL
- Average UV index in December: 1
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Caledonia, IL
- Average cloud cover in December: 60
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is September (Cloud cover 34).
Average visibility in December
Caledonia, IL
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
