January weather forecastWaukegan, IL
January
Weather in January
January in Waukegan, Illinois exhibits the ramifications of a harsh winter. Snow falls on an average of 12.4 days with 2.24" (57mm) of accumulation. Freezing temperatures, high humidity, and significant cloud cover dominate the weather pattern. A distinguishing characteristic of January is the limited daylight hours, with the sun setting early in the afternoon. The heavy snowfall gives way to February's slightly milder weather.Temperature
Temperature records mark January as the coldest month, with highs averaging 27.9°F (-2.3°C) and lows at 18.3°F (-7.6°C).Humidity
With an average relative humidity of 83%, January is the most humid month.Rainfall
In Waukegan, in January, during 6.4 rainfall days, 1.06" (27mm) of precipitation is typically accumulated. In Waukegan, Illinois, during the entire year, the rain falls for 142.5 days and collects up to 21.5" (546mm) of precipitation.Snowfall
Months with snowfall in Waukegan are January through April, October through December. In Waukegan, during January, snow falls for 12.4 days and regularly aggregates up to 2.24" (57mm) of snow. In Waukegan, during the entire year, snow falls for 45.5 days and aggregates up to 9.37" (238mm) of snow.Daylight
In Waukegan, the average length of the day in January is 9h and 30min.On the first day of January in Waukegan, sunrise is at 7:20 am and sunset at 4:29 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 5:03 pm CST.
Sunshine
With an average of 3.7h of sunshine, January has the least sunshine of the year.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for average individuals.Note: During January, 1 as the daily maximum UV index converts into the following advice:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Experience reduced UV exposure by about half when donning a wide-brim hat. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Waukegan, IL
- Average high temperature in January: 27.9°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 January: 18.3°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 January
Waukegan, IL
- Average pressure in January: 30.1"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 January
Waukegan, IL
- Average wind speed in January: 11.9mph
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 January
Waukegan, IL
- Average humidity in January: 83%
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 January
Waukegan, IL
- Average rainfall in January: 1.06"
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 January
Waukegan, IL
- Average rainfall days in January: 6.4 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 January
Waukegan, IL
- Average snowfall in January: 2.24"
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 January
Waukegan, IL
- Average snowfall days in January: 12.4 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 January /
Average sunshine in January
Waukegan, IL
- Average daylight in January: 9h and 30min
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 January: 3h and 42min
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 January
Waukegan, IL
- Average sunshine days in January: 12.4 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 January
Waukegan, IL
- Average UV index in January: 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 January
Waukegan, IL
- Average cloud cover in January: 61
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 January
Waukegan, IL
- Average visibility in January: 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).
