Average First Frost Dates for Iowa

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

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List of Average First Frost Dates for Locations in Iowa

LocationAverage First Frost Dates
AltoonaOct. 11 - Oct. 20
AmesOct. 11 - Oct. 20
AnkenyOct. 1 - Oct. 10
BettendorfOct. 21 - Oct. 31
BurlingtonOct. 11 - Oct. 20
Cedar FallsOct. 1 - Oct. 10
Cedar RapidsOct. 1 - Oct. 10
ClintonOct. 11 - Oct. 20
CliveOct. 11 - Oct. 20
CoralvilleOct. 11 - Oct. 20
Council BluffsOct. 11 - Oct. 20
DavenportOct. 21 - Oct. 31
Des MoinesOct. 11 - Oct. 20
DubuqueOct. 11 - Oct. 20
Fort DodgeOct. 1 - Oct. 10
GrimesOct. 11 - Oct. 20
IndianolaOct. 1 - Oct. 10
Iowa CityOct. 11 - Oct. 20
JohnstonOct. 11 - Oct. 20
MarionOct. 1 - Oct. 10
MarshalltownOct. 1 - Oct. 10
Mason CityOct. 1 - Oct. 10
MuscatineOct. 11 - Oct. 20
NewtonOct. 11 - Oct. 20
North LibertyOct. 11 - Oct. 20
OttumwaOct. 11 - Oct. 20
Sioux CityOct. 1 - Oct. 10
UrbandaleOct. 11 - Oct. 20
WaterlooOct. 1 - Oct. 10
WaukeeOct. 11 - Oct. 20
West Des MoinesOct. 11 - Oct. 20

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