1963: Unseasonably hot autumn weather peaked on October 5-6 with most stations across about the western two thirds of Iowa tying or breaking their all-time October warm temperature records on one or both of those days. On the 6th the highest reported temperatures were 96 F at Columbus Junction and 95 F at half a dozen stations including Fairfield, Grinnell, and Waterloo. At Des Moines the high was 94 F just one day after a high of 95 F on the 5th, and aside from these two days the warmest temperature on record at Des Moines in the month of October is 92 F. The warm weather continued for most of October and the first freezes of the season were generally not reported until the final week of the month. In many areas this remains the latest first freeze on record and the month finished as the warmest October on record in Iowa.
1935: Several unusually cold early October days culminated on the morning of the 6th when the temperature bottomed out at 12 F at Humboldt. Other reported low temperatures included 14 F at Belmond, 15 F at Decorah, Mason City, and Rock Rapids, 16 F at Fort Dodge, and 18 F at Atlantic.
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This post was written by Schnack on October 6, 2012