A look back at the temperature “Roller-Coaster” of October 1989




Summer -level warmth spread across Chicago during the second week of October 1989. This included 6 straight days with 70+ degree highs. Nested in this warm spell were 3 straight 80-degree days.

One of the most remarkable fall temperature reversals followed. A mid-month cold snap brought the city its greatest October snowfall on record–a 6.3 inch total over 3 days, from Oct. 18 through Oct. 20. Just 2 days removed from this event a stretch of 8 consecutive 70-degree days began.

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