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The climate of Chicago (Illinois - United States of America)
Chicago is a large city located in the northeastern part of Illinois on Lake Michigan. Chicago is also known as Windy City. After Los Angeles and New York Chicago is the largest city in the United States. The urban area of Chicago is home to 9 million people. The Chicago River flows through the city. The natural flow of this river has been artificially reversed. On St Patrick’s Day a colorant is added to the water making it green. The city is home to many big sports teams such as the Chicago Bulls, the Chicago White Sox, the Chicago Bears and many others. Chicago is known for its educational system, many universities can be found here such as the Northwestern University, the University of Chicago and the University of Illinois at Chicago. Two large airports can be found in the city: Midway International Airport and O’Hare International Airport. Chicago is one of the biggest railway junctions in the world.
Chicago has a warm continental climate influenced by Lake Michigan. Winters are very cold. During the coldest months temperatures hardly rise above freezing point. Summers are warm with average temperatures just below 30 degrees Celsius (86 degrees Fahrenheit). Because of the presence of Lake Michigan temperatures are slightly lower here than in the interior. Precipitation is quite evenly spread out over the year. During the winter precipitation mainly falls in the form of snow.

 

Climate information
The figures below are based on long term weather and climate records. They are an average for Chicago:

average
 maximum
temperature (°C)

average
minimum

temperature (°C)
average
hours of sunshine

per
day
average days with precipitation
per month
average
mm
precipitation
per month
average
sea
temperature (°C)
January -1 -10 4 12 4
February 1 -8 5 10 3
March 8 -2 6 12 3
April 15 4 7 12 3
May 21 9 9 11 6
June 27 14 10 10 12
July 29 17 10 10 19
August 28 16 9 9 21
September 24 12 8 9 19
October 17 6 6 9 14
November 9 0 4 11 9
December 2 -7 3 12 5
= 0-5 mm ● = 6-30 mm ● = 31-60 mm ● = 61-100 mm ● = 101-200 mm ● = over 200 mm
= 0-0.2 inches ● = 0.2-1.2 inches ● = 1.2-2.4 inches ● = 2.5-4 inches ● = 4.1-8 inches ● = over 8 inches

More climate information
Climate figures are very useful but don’t present a general impression of the climate and the eventual weather circumstances within a certain period. The figures don’t always reflect the chance of wintry weather, extreme heat or hurricanes. That is why we offer useful extra climate information for each month of the year:
 

chance of
(very) hot

weather

chance of
(very) cool
weather
chance of
long-term

precipitation
chance of
hurricanes
(cyclones)
chance of
sunny days

UV-index

January
February
March
April
May
June
July
August
September
October
November
December
click here for the explanation of the symbols

Disclaimer
The information at this site was carefully composed from climate data collected by meteorological services, meteorological offices, climate experts and other sources. “More climate info” is based on statistics, climate data and personal experience. No rights can be derived from this site. Weather has no memory and gives no guaranties. Nothing is as changeable and unpredictable as the weather. The authors of this site feel in no way responsible for any damages caused by misinterpretation or other circumstances that may influence your holiday or trip to a certain destination. We provide information, it’s up to the reader to use it to it’s benefit.

 

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