Iowa - The winter of 2009-10 started early in Iowa. On Oct. 10, temperatures dropped well below freezing to as low as 22°F. The freeze was a harbinger of more winter problems that would follow in December and January. On Dec. 10, temperatures were recorded between minus-6° and minus-11°F, and on Jan. 2, even colder temperatures occurred across the state, plummeting from minus-18° to minus-21°F.