Chicago’s Climate

The Windy City

They call it the Windy City for a reason. Information from the National Climatic Data Center shows that typically the yearly average wind velocity in the city of Chicago exceeds 10 miles per hour. The windiest month is generally April. During most springtimes, Chicago’s wind velocity averages close to 12 miles per hour. Coming in a close second, the month of March sees the average wind velocity just slightly less that of April. Spring, Fall, and Winter seem to be the windiest months for Chicago, while the summer months of June, July, and August typically have an average wind velocity that falls below 10 miles per hour. August is regarded as the calmest month, with an average wind velocity of a little over 8 miles per hour.

Temperature

Based on National Climatic Data Center information, the hottest month in Chicago is typically July with a daily average temperature of 74 degrees. August comes in at a close second with a daily average of 72 degrees. The coldest month is, of course, January as the daily average is 22 degrees, with an average low of 13 degrees. The all-time record high temperature in Chicago was 104 degrees and the all-time record low was negative 27 degrees. The record high occurred during the months of both June and July while the record low occurred during the month of January. During the months of November, December, January and February, the temperature has never climbed above 80 degrees. During the months of May, June, July, August, and September, the temperature has never dropped below 20 degrees.

Precipitation

Based on the numbers provided by the national Climatic Data Center, the rainiest month in Chicago is August with an average rainfall of 4 inches, while the driest month is generally February, with an average rainfall of 1.4 inches. The two months during which the city sees the greatest amount of snow are December and January. During these months, the city averages 8.3 and 10.7 inches of snow, respectively. February and March also see average snowfalls of over 6.5 inches, while none of the remaining months generally show any snowfall average above 2 inches. In fact, June, July, August, and September most likely experience no snow fall at all as temperatures usually sit at their highest levels.

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