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
Transition from November to December is accompanied by a temperature drop, with average high-temperatures decreasing from a chilly 43.9°F (6.6°C) to a freezing cold 31.6°F (-0.2°C). Throughout December, McConnell anticipates an average low-temperature of 21.4°F (-5.9°C).Humidity
In McConnell, the average relative humidity in December is 83%.Rainfall
In McConnell, in December, during 7.4 rainfall days, 1.1" (28mm) of precipitation is typically accumulated. In McConnell, Illinois, during the entire year, the rain falls for 145.9 days and collects up to 22.8" (579mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. In McConnell, in December, during 11.3 snowfall days, 2.52" (64mm) of snow is typically accumulated. Throughout the year, there are 50.1 snowfall days, and 13.62" (346mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 6min of daylight.On the first day of the month, sunrise is at 7:09 am and sunset at 4:27 pm. On the last day of December, sunrise is at 7:28 am and sunset at 4:36 pm CST.
Sunshine
In McConnell, Illinois, the average sunshine in December is 4h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for average individuals.Note: The maximum UV index of 1 during December leads to these instructions:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. To guard against the harmful effects of the Sun, minimize exposure during midday. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Frequently asked questions
How cold is December in McConnell?
What is the average humidity in December in McConnell?
How much does it rain in McConnell in December?
How much does it snow in McConnell in December?
What is the month with the shortest days in McConnell?
How many hours of daylight does McConnell have in December?
When are sunrise and sunset in December in McConnell?
How many hours of sunshine does McConnell have in December?
What are the months with the lowest UV index in McConnell?
How high is the UV index in December in McConnell?
Average temperature in December
McConnell, IL
- Average high temperature in December: 31.6°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (24.8°F).
- Average low temperature in December: 21.4°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 (12.9°F).
Average pressure in December
McConnell, IL
- Average pressure in December: 30.09"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
McConnell, IL
- Average wind speed in December: 9.5mph
The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in December
McConnell, IL
- Average humidity in December: 83%
The month with the highest relative humidity is January (87%).
The months with the lowest relative humidity are April and October (76%).
Average rainfall in December
McConnell, IL
- Average rainfall in December: 1.1"
The wettest month (with the highest rainfall) is June (3.43").
The driest month (with the least rainfall) is January (1.06").
Average rainfall days in December
McConnell, IL
- Average rainfall days in December: 7.4 days
The month with the highest number of rainy days is May (18.3 days).
The months with the least rainy days are January and February (5.3 days).
Average snowfall in December
McConnell, IL
- Average snowfall in December: 2.52"
The month with the highest snowfall is January (3.46").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
McConnell, IL
- Average snowfall days in December: 11.3 days
The month with the highest number of snowfall days is January (13.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
McConnell, 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
McConnell, IL
- Average sunshine days in December: 15.3 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is June (9.3 days).
Average UV index in December
McConnell, 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
McConnell, 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 33).
Average visibility in December
McConnell, 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).
McConnell, Illinois, USA
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