Climate averages 1991–2020
Waukegan weather
in October.
A cool, wet month: the joint 5th warmest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
October is a cool month in Waukegan: daytime highs average 14.5°C and nights cool to about 10.3°C. By daytime temperature it is the joint 5th warmest of the 12 months.
Expect about 101 mm of rain on roughly 10 days, which makes October a wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 06 min on an average October day.
The nearest other city in this atlas is Kenosha (25 km away). In October its highs average 14.3°C, about as warm as Waukegan, with 96 mm of rain.
Among the 498 cities listed in the United States, Waukegan ranks 477th of 498 for the warmest October highs and joint 416th of 498 for the driest October (rainfall, lowest first). The mean October high of those 498 cities is 21.4°C; Waukegan is 6.9°C cooler than that mean.
From October to November, average highs fall by 7.1°C to 7.4°C, and monthly rainfall falls from 101 mm to 87 mm.
The annual picture
October 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, selected | 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 | 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
October in nearby cities
- Kenosha in OctoberUnited States · 25 kmHigh 14.3°C · Low 10.3°C · 96 mm rain
- Arlington Heights in OctoberUnited States · 33 kmHigh 15.8°C · Low 8.6°C · 79 mm rain
- Evanston in OctoberUnited States · 38 kmHigh 15.3°C · Low 9.8°C · 83 mm rain
- Racine in OctoberUnited States · 41 kmHigh 14.2°C · Low 10.2°C · 92 mm rain
- Schaumburg in OctoberUnited States · 42 kmHigh 15.9°C · Low 7.7°C · 79 mm rain
- Elgin in OctoberUnited States · 51 kmHigh 16.0°C · Low 7.8°C · 80 mm rain
- Cicero in OctoberUnited States · 58 kmHigh 16.3°C · Low 8.7°C · 85 mm rain
- Chicago in OctoberUnited States · 59 kmHigh 15.9°C · Low 9.2°C · 85 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.