Average Last Frost Dates for Iowa

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Last Frost Dates were calculated using daily climate data from the period between 1991-2020.

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List of Average Last Frost Dates for Locations in Iowa

LocationAverage Last Frost Dates
AltoonaMay 1 - May 10
AmesMay 1 - May 10
AnkenyMay 1 - May 10
BettendorfApr. 21 - Apr. 30
BurlingtonApr. 21 - Apr. 30
Cedar FallsMay 11 - May 20
Cedar RapidsMay 1 - May 10
ClintonApr. 21 - Apr. 30
CliveApr. 21 - Apr. 30
CoralvilleMay 1 - May 10
Council BluffsMay 1 - May 10
DavenportApr. 21 - Apr. 30
Des MoinesApr. 21 - Apr. 30
DubuqueApr. 21 - Apr. 30
Fort DodgeMay 1 - May 10
GrimesMay 1 - May 10
IndianolaMay 1 - May 10
Iowa CityMay 1 - May 10
JohnstonApr. 21 - Apr. 30
MarionMay 1 - May 10
MarshalltownMay 1 - May 10
Mason CityMay 11 - May 20
MuscatineApr. 21 - Apr. 30
NewtonApr. 21 - Apr. 30
North LibertyMay 1 - May 10
OttumwaApr. 21 - Apr. 30
Sioux CityMay 1 - May 10
UrbandaleApr. 21 - Apr. 30
WaterlooMay 11 - May 20
WaukeeMay 1 - May 10
West Des MoinesApr. 21 - Apr. 30

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