The Average First Frost in Iowa varies over the next few weeks across the state. This is the average date of the first frost in NW Iowa, but Keokuk in SE Iowa, doesn’t have the average first frost until mid-late October.
A few Selected Cities in Iowa with their average date of their first frost.
Cedar Rapids October 6th
Des Moines October 11th
Waterloo September 30th
Dubuque October 6th
Burlington October 14th
Ottumwa October 16th
Sioux City October 4th
Spencer September 26th
Mason City October 2nd
Keokuk October 22nd


About Author

Jeff Wilcox serves as the Assistant Lead Forecaster for the Iowa Weather Network and is in charge of daily forecasting operations. He produces the "Iowa Weather Report" four days a week, as he has since 2008, with features including a video, graphics, discussions, and more. Weather has always fascinated him since he was young. His first memory of weather was back in 1988 during the Mother’s Day Tornado Outbreak in 1988. He vaguely remembers the cold snap the state experienced around Christmas Time in 1983, but was too young to remember that vividly. Growing up in Anamosa since moving there in 1981, he has experienced all the weather imaginable from bitter cold in early 1996 to hot and humid weather in 1995 and again in 2012, to floods in 1993, 1999, 2008 and 2013, to droughts in 1988 and 2012. After doing some other website work and other interests which included publishing a novel in 2007, he finally began the Iowa Weather Blog on June 27th 2008, right after the Flood of 2008. He worked it alone for hours on end giving out weather information that he thought was appropriate for those that wanted to know what was going on in their skies and what was to come. In 2012, the Iowa Weather Blog merged with two other Iowa weather organizations in the state to form the Iowa Weather Network.

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