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
December implies a gentle temperature shift, with average high-temperatures reducing from November's chilly 43.9°F (6.6°C) to a wintry 32°F (0°C). Cedarville in December anticipates an average nighttime temperature of 21.6°F (-5.8°C).Humidity
In Cedarville, the average relative humidity in December is 83%.Rainfall
The month with the least rainfall in Cedarville is December, when the rain falls for 6.8 days and typically collects 0.83" (21mm) of precipitation.Snowfall
January through April, October through December are months with snowfall in Cedarville. In Cedarville, Illinois, in December, during 8.2 snowfall days, 1.34" (34mm) of snow is typically accumulated. In Cedarville, during the entire year, snow falls for 41.8 days and aggregates up to 10.43" (265mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 6min of daylight.On the first day of December, sunrise is at 7:08 am and sunset at 4:26 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 4:36 pm CST.
Sunshine
The average sunshine in December in Cedarville is 4h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV rays for average individuals.Note: The maximum daily UV index of 1 in December converts into the following recommendations:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Frequently asked questions
How cold is December in Cedarville?
What is the average humidity in December in Cedarville?
What is the driest month in Cedarville?
How many days does it rain in December in Cedarville?
How much does it snow in Cedarville in December?
What is the month with the shortest days in Cedarville?
What is the average length of the day in December in Cedarville?
When are sunrise and sunset in December in Cedarville?
How long on average sun shines in December in Cedarville?
When is the lowest UV index in Cedarville?
What is the UV index intensity in December in Cedarville?
Average temperature in December
Cedarville, IL
- Average high temperature in December: 32°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (25.2°F).
- Average low temperature in December: 21.6°F
The month with the highest average low temperature is July (62.8°F).
The coldest month (with the lowest average low temperature) is January (13.1°F).
Average pressure in December
Cedarville, 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 (29.91"Hg).
Average wind speed in December
Cedarville, IL
- Average wind speed in December: 9.4mph
The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity in December
Cedarville, IL
- Average humidity in December: 83%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (75%).
Average rainfall in December
Cedarville, IL
- Average rainfall in December: 0.83"
The wettest month (with the highest rainfall) is June (2.87").
The driest month (with the least rainfall) is December (0.83").
Average rainfall days in December
Cedarville, IL
- Average rainfall days in December: 6.8 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (4.9 days).
Average snowfall in December
Cedarville, IL
- Average snowfall in December: 1.34"
The month with the highest snowfall is January (2.99").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Cedarville, IL
- Average snowfall days in December: 8.2 days
The month with the highest number of snowfall days is January (11.3 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
Cedarville, IL
- Average daylight in December: 9h and 1min
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: 4h and 0min
The months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in December
Cedarville, IL
- Average sunshine days in December: 16.7 days
The month with the most sunshine days is November (17.7 days).
The month with the least sunshine days is June (10.5 days).
Average UV index in December
Cedarville, IL
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Cedarville, IL
- Average cloud cover in December: 59
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is September (Cloud cover 32).
Average visibility in December
Cedarville, IL
- Average visibility in December: 6mi
The months with the highest visibility are March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, February, July and August (5mi).
Cedarville, Illinois, USA
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