Dear Tom,

I’m curious when, if ever, was the last time it was 70-degrees or warmer on November 4 at 8pm, like it was this year?
Dan Klaiber, Chicago

Dear Dan,

The short answer is never. This November 4, the mercury reached 70 in the late afternoon and remained at or above 70 until almost midnight (1 am CDT). Chicago climatologist and weather historian Frank Wachowski checked the archives and found that dating back to 1871; the city had officially registered a 70-degree- plus high temperature in 11 years on November 4. In the ten occurrences before 2022, the temperature had never remained at or above 70 degrees later than 5 pm, so this year’s late-evening warmth was unprecedented. It is interesting to note that six of the 11 occurrences of the 70s on November 4 have occurred since 2000- in 2003, 2005, 2008, 2015, 2020, and 2022.  

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