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Waukegan (IL) Climate by Month

The graphs below provide an overview of the climate in Waukegan (Illinois), the United States of America. They present long-term patterns and averages of weather conditions over a 30-year period.

Average day and night temperature

The mean minimum and maximum temperatures over the year.

Monthly precipitation

The mean monthly precipitation over the year, including rain, snow, hail etc.

Forecast for Waukegan (IL)

Sun   Oct 06
24°C | 12°C
W 29 km/h
clear and no rain

clear and no rain

Mon   Oct 07
19°C | 8°C
NW 14 km/h
partly cloudy and no rain

partly cloudy and no rain

Tue   Oct 08
21°C | 9°C
NW 14 km/h
clear and no rain

clear and no rain

The best time of year to visit Waukegan in the United States of America

During the months of June and September you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:

  • When is winter in Waukegan?
    The coldest season / winter is in the following months: January, February and December.
  • Which is the warmest month in Waukegan?
    July has an average maximum temperature of 27°C and is the warmest month of the year.
  • Which is the coldest month in Waukegan?
    The coldest month is January with an average maximum temperature of -1°C.
  • Which is the wettest month in Waukegan?
    April tops the wettest month list with 104 mm of rainfall.
  • Which is the driest month in Waukegan?
    January is the driest month with 42 mm of precipitation.
  • Which is the sunniest month in Waukegan?
    July is the sunniest month with an average of 319 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.