10 All-Time Rainiest Weather Days in Chicago History

The all-time rainiest/wettest days in Chicago history.

These are the ten all-time rainiest weather days in the history of the city of Chicago, Illinois. The all-time rainiest day in Chicago history occurred on July 23, 2011, when 6.86" of rain fell in the city. The rain data from Chicago dates back to 1871.

Chicago can have drought periods, but they generally do not last for long. Chicago sits right along Lake Michigan, which means the city's weather is heavily influenced by being near such a large body of water.

Being near such a large body of water can cause rapid weather changes in Chicago. I was once at a Chicago Cubs game in May when the temperature was in the mid-70s at game time. By the sixth inning the temperature had dropped into the low 40s. That was a shock to all of us fans sitting in shorts.

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10 All-Time Rainiest Weather Days in Chicago

1. July 23, 2011 - 6.86"

2. September 13, 2008 - 6.64"

3. August 14, 1987 - 6.49"

4. July 12, 1957 - 6.16"

5. August 2, 1885 - 5.63"

6. July 27, 1966 - 4.71"

7. June 13, 1976 - 4.64"

8. June 25, 1959 - 4.58"

9. December 2, 1982 - 4.47"

10. August 22, 2002 - 4.45"

Image Source by Rdikeman

On average, roughly 3.08" of rain falls in Chicago per month. The average annual rainfall in Chicago is 36.89". But the rain in Chicago varies a great deal depending upon the month and season. In general, summer is the rainiest time in Chicago, and winter sees the least precipitation.

The rainiest month of the year in Chicago is August, which averages 4.90" of rain, followed by July at 3.71". The nest rainiest month is May at 3.67", June at 3.47", April at 3.38" and September at 3.21"

The least rainiest month of the year in Chicago is January at 1.73", followed closely by February at 1.78". The next least rainiest month is December at 2.25", March at 2.49", November at 3.14" and October at 3.15".

So visitors to Chicago might be surprised to find that summer is when you can expect the most rain. If you are staying at one of the lovely hotels in Chicago in summer, or going to eat at one of the great restaurants in the city, you might want to keep an umbrella handy.

For more see 10 Tallest Buildings in Chicago

Source:http://www.weather.gov/climate/index.php?wfo=lot

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Phoenix Montoya
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