Climate and average monthly weather in Chicago (Illinois), United States of America

For more information see our average climate information (by month in graphs) in a complete overview below.

Average minimum and maximum temperature over the year

The monthly mean minimum and maximum daily temperature. Show in Celsius

Average min and max temperatures in Chicago, United States of America   Copyright © 2019 www.weather-and-climate.com
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* Data from nearest weather station: Chicago (Illinois), United States of America (0.0 Miles).

Average monthly hours of sunshine over the year

This is the monthly total of sunhours

Average monthly sunhours in Chicago, United States of America   Copyright © 2019 www.weather-and-climate.com
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Average monthly precipitation over the year (rainfall, snow)

This is the mean monthly precipitation, including rain, snow, hail etc. Show in Inches

Average precipitation (rain/snow) in Chicago, United States of America   Copyright © 2019 www.weather-and-climate.com
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Average monthly rainy days over the year

This is the number of days each month with rain, snow, hail etc.

Average rainy days (rain/snow) in Chicago, United States of America   Copyright © 2019 www.weather-and-climate.com
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Where to stay in Chicago

Booking.com

Average humidity over the year

This is the mean monthly relative humidity

Average relative humidity in Chicago, United States of America   Copyright © 2019 www.weather-and-climate.com
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Average wind speed over the year

This is the mean monthly wind speed (meters per second)

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Cheapest month to fly to Chicago

What is the best time of year to go to Chicago in United States of America

Winter in Chicago is very variable. The average Chicago winter produces 94 cm (38 inches) of snow. This is just an average, because most winters produce only a few snow falls during the season. Temperatures can vary wildly within the span of one week, but temperatures can often stay below freezing for several continues days or even weeks in January and February. The temperature in January averages about - 2 degrees Celsius (29°Fahrenheit) in the afternoon, and -10 degrees Celsius (14°Fahrenheit) at night.

On a typical summer day, humidity is usually high and temperatures ordinarily reach anywhere between 26°C to 33°C (78°F and 92°F). Overnight temperatures in summer usually drop to around 18°C (65°F). Thunderstorms occur during summer.

Here are some average weather facts we collected from our historical climate data:

  • During the month of May and September you are most likely to experience good weather with pleasant average temperatures that fall between 20 degrees Celsius (68°F) and 25 degrees Celsius (77°F).
  • The coldest season / winter is in the months January and February.
  • On average, the warmest month is July.
  • On average, the coolest month is January.
  • August is the wettest month. This month should be avoided if you are not a big fan of rain.
  • February is the driest month.
Do these climate conditions match with when you want to go to Chicago in United States of America? Find out where to stay here.