Climate averages 1991–2020
Waukegan weather
in December.
A cold month with moderate precipitation: the 10th warmest and the joint 4th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a cold month in Waukegan: daytime highs average 1.8°C and nights cool to about -2.4°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 78 mm of precipitation on roughly 10 days, which makes December a month with moderate precipitation (the joint 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 9 h 09 min on an average December day.
The nearest other city in this atlas is Kenosha (25 km away). In December its highs average 1.8°C, about as warm as Waukegan, with 71 mm of precipitation.
Among the 498 cities listed in the United States, Waukegan ranks joint 459th of 498 for the warmest December highs and joint 273rd of 498 for the driest December (precipitation, lowest first). The mean December high of those 498 cities is 10.5°C; Waukegan is 8.7°C cooler than that mean.
From December to January, average highs fall by 3.1°C to -1.3°C, and monthly precipitation falls from 78 mm to 75 mm.
The annual picture
December in context
Monthly precipitation
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Waukegan climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -1.3°C-6.5°C | -6.5°C | 75 | 9.8 | 9.59 h |
| February | -0.7°C-6.3°C | -6.3°C | 63 | 7.8 | 10.511 h |
| March | 3.0°C-2.0°C | -2.0°C | 75 | 9.8 | 11.912 h |
| April | 7.9°C3.6°C | 3.6°C | 121 | 12.0 | 13.313 h |
| May | 14.5°C10.1°C | 10.1°C | 105 | 11.7 | 14.615 h |
| June | 21.6°C17.3°C | 17.3°C | 88 | 10.5 | 15.215 h |
| July | 25.3°C21.2°C | 21.2°C | 78 | 10.5 | 14.915 h |
| August | 24.8°C21.0°C | 21.0°C | 96 | 10.6 | 13.914 h |
| September | 21.2°C17.1°C | 17.1°C | 83 | 9.5 | 12.513 h |
| October | 14.5°C10.3°C | 10.3°C | 101 | 10.4 | 11.111 h |
| November | 7.4°C3.4°C | 3.4°C | 87 | 10.0 | 9.810 h |
| December, selected | 1.8°C-2.4°C | -2.4°C | 78 | 10.0 | 9.19 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
December in nearby cities
- Kenosha in DecemberUnited States · 25 kmHigh 1.8°C · Low -2.4°C · 71 mm precipitation
- Arlington Heights in DecemberUnited States · 33 kmHigh 1.8°C · Low -4.4°C · 54 mm precipitation
- Evanston in DecemberUnited States · 38 kmHigh 2.0°C · Low -3.0°C · 59 mm precipitation
- Racine in DecemberUnited States · 41 kmHigh 1.6°C · Low -2.6°C · 68 mm precipitation
- Schaumburg in DecemberUnited States · 42 kmHigh 1.7°C · Low -5.2°C · 54 mm precipitation
- Elgin in DecemberUnited States · 51 kmHigh 1.7°C · Low -5.3°C · 55 mm precipitation
- Cicero in DecemberUnited States · 58 kmHigh 2.3°C · Low -4.0°C · 61 mm rain
- Chicago in DecemberUnited States · 59 kmHigh 2.2°C · Low -3.5°C · 61 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Waukegan) is explained once on the Waukegan year overview and on the Sources, method and limits page.