1937: The last week of October was unusually warm and culminated on the 29th when many stations established records for their warmest temperature so late in the year. Reported high temperatures around the state included 92 degrees at Knoxville and Winterset, 91 degrees at Atlantic, 89 degrees at Des Moines, and 87 degrees at Decorah and at Belmond where amazingly 10.8 inches of snow had fallen in a storm less than two weeks earlier.
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1925: Unseasonably bitter cold weather set in after a pair of early winter storms as the temperature plummeted all the way down to -15 degrees at Inwood setting the all-time Iowa October record. Other low temperatures included -10 degrees at Milford, -4 degrees at Decorah and Mason City, -2 degrees at Boone and Fort Dodge, -1 degrees at Iowa Falls, and 0 degrees at Cedar Rapids. At Des Moines the month would finish as the coldest October on record with an average temperature of only 41.6 degrees.