Is it true that we had a lot of record-low temps set in the 1980s?

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated.

Dear Tom,

It seems that we had a lot of record low temperatures set in the 1980s. Is that true?

Mike Parenti

Dear Mike,

It is indeed true. The explanation is twofold. The actual weather, of course, is an important factor, and intense cold spells characterized several of Chicago’s winters during the 1980s, but a major predominating influence was change in the site of the city’s official weather observations. After several locations well within the city since 1870, the official site was moved to O’Hare International Airport on Jan. 17, 1980, a more rural location removed from the metropolitan heat island. That site typically registers lower temperatures, especially during the summer. On average, Chicago ties or establishes four daily record low temperature per year, but during the 1980s the average was 10 per year.

Notice: you are using an outdated browser. Microsoft does not recommend using IE as your default browser. Some features on this website, like video and images, might not work properly. For the best experience, please upgrade your browser.