Last Frost Dates in Iowa (2027) by City

Average last frost dates in Iowa run from April 15 in Burlington to May 1 in Spencer.

Average frost dates for 41 places in Iowa
Place	Last frost	First frost
Altoona	Apr 23	Oct 15
Ames	Apr 26	Oct 8
Ankeny	Apr 23	Oct 15
Bettendorf	Apr 16	Oct 25
Boone	Apr 28	Oct 12
Burlington	Apr 15	Oct 20
Carroll	Apr 27	Oct 10
Cedar Falls	Apr 27	Oct 10
Cedar Rapids	Apr 27	Oct 11
Clinton	Apr 22	Oct 16
Clive	Apr 18	Oct 20
Coralville	Apr 21	Oct 18
Council Bluffs	Apr 18	Oct 21
Davenport	Apr 19	Oct 22
Des Moines	Apr 18	Oct 20
Dubuque	Apr 19	Oct 21
Fort Dodge	Apr 28	Oct 8
Grimes	Apr 19	Oct 18
Indianola	Apr 24	Oct 12
Iowa City	Apr 21	Oct 18
Johnston	Apr 19	Oct 18
Le Mars	Apr 30	Oct 4
Marion	Apr 28	Oct 12
Marshalltown	Apr 28	Oct 7
Mason City	Apr 29	Oct 7
Muscatine	Apr 24	Oct 14
Newton	Apr 22	Oct 17
North Liberty	Apr 21	Oct 18
Norwalk	Apr 18	Oct 20
Oskaloosa	Apr 21	Oct 16
Ottumwa	Apr 23	Oct 14
Pella	Apr 20	Oct 19
Pleasant Hill	Apr 18	Oct 20
Sioux City	Apr 29	Oct 7
Spencer	May 1	Oct 3
Storm Lake	Apr 25	Oct 13
Urbandale	Apr 19	Oct 18
Waterloo	Apr 27	Oct 10
Waukee	Apr 18	Oct 20
Waverly	Apr 27	Oct 10
West Des Moines	Apr 18	Oct 20

Source: NOAA U.S. Climate Normals 1991–2020, nearest station to each place. Places of 10,000+ people (US Census Bureau, 2024 estimates) within 50 miles of a station.

Frost dates in Iowa

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