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 weather in Waukegan shows a temperature decrease, transitioning from a chilly 45.1°F (7.3°C) in November to a wintry 34°F (1.1°C). December nights in Waukegan witness a mild cool down to an average low of 25.3°F (-3.7°C).Humidity
In Waukegan, the average relative humidity in December is 81%.Rainfall
The month with the least rainfall in Waukegan is December, when the rain falls for 8.1 days and typically collects 0.91" (23mm) of precipitation.Snowfall
Months with snowfall in Waukegan, Illinois, are January through April, October through December. In Waukegan, during December, snow falls for 9.7 days and regularly aggregates up to 1.77" (45mm) of snow. In Waukegan, during the entire year, snow falls for 45.5 days and aggregates up to 9.37" (238mm) of snow.Daylight
With an average of 9h and 6min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:01 am and sunset at 4:19 pm. On the last day of December, sunrise is at 7:20 am and sunset at 4:28 pm CST.
Sunshine
The average sunshine in December in Waukegan is 4h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index in Waukegan. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for the average person.Note: A maximum daily UV index of 1 during December morphs into the following directions:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. To cut down UV radiation exposure by about half, sport a wide-brim hat. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Waukegan in December?
What is the average humidity in December in Waukegan?
What is the driest month in Waukegan?
How much does it rain in Waukegan in December?
How much does it snow in Waukegan in December?
What is the month with the shortest days in Waukegan?
How many hours of daylight does Waukegan have in December?
When are sunrise and sunset in December in Waukegan?
How long on average sun shines in December in Waukegan?
When is the lowest UV index in Waukegan?
How high is the UV index in December in Waukegan?
Average temperature in December
Waukegan, IL
- Average high temperature in December: 34°F
The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in December: 25.3°F
The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).
Average pressure in December
Waukegan, IL
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Waukegan, IL
- Average wind speed in December: 11.1mph
The windiest month (with the highest average wind speed) is January (11.9mph).
The calmest month (with the lowest average wind speed) is August (7.3mph).
Average humidity in December
Waukegan, IL
- Average humidity in December: 81%
The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are October and November (75%).
Average rainfall in December
Waukegan, IL
- Average rainfall in December: 0.91"
The wettest months (with the highest rainfall) are June and August (2.68").
The driest month (with the least rainfall) is December (0.91").
Average rainfall days in December
Waukegan, IL
- Average rainfall days in December: 8.1 days
The month with the highest number of rainy days is July (17 days).
The month with the least rainy days is February (5.2 days).
Average snowfall in December
Waukegan, IL
- Average snowfall in December: 1.77"
The month with the highest snowfall is February (2.6").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Waukegan, IL
- Average snowfall days in December: 9.7 days
The month with the highest number of snowfall days is January (12.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Waukegan, 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: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in December
Waukegan, IL
- Average sunshine days in December: 15.5 days
The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is July (10.8 days).
Average UV index in December
Waukegan, IL
- Average UV index in December: 1
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Waukegan, IL
- Average cloud cover in December: 59
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in December
Waukegan, 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).
Waukegan, Illinois, USA
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