Iowa Frost Dates
Across Iowa, the average last spring frost ranges from Apr 10 in Keokuk to May 5 in Sheldon. Find your town below, or enter your ZIP code for the nearest station.
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Average frost dates in Iowa towns
Average (50%) dates of the last 32°F frost in spring and the first in fall, from the nearest NOAA station. Towns with 5,000+ residents.
| Town | Last frost | First frost | Season (days) |
|---|---|---|---|
| Adel | Apr 25 | Oct 10 | 166 |
| Algona | Apr 30 | Oct 6 | 160 |
| Altoona | Apr 23 | Oct 15 | 173 |
| Ames | Apr 26 | Oct 8 | 164 |
| Anamosa | May 1 | Oct 4 | 154 |
| Ankeny | Apr 23 | Oct 15 | 173 |
| Asbury | Apr 19 | Oct 21 | 184 |
| Atlantic | Apr 30 | Oct 2 | 153 |
| Bettendorf | Apr 16 | Oct 25 | 190 |
| Bondurant | Apr 23 | Oct 15 | 173 |
| Boone | Apr 28 | Oct 12 | 165 |
| Burlington | Apr 15 | Oct 20 | 187 |
| Carroll | Apr 27 | Oct 10 | 166 |
| Cedar Falls | Apr 27 | Oct 10 | 165 |
| Cedar Rapids | Apr 27 | Oct 11 | 165 |
| Centerville | Apr 28 | Oct 14 | 168 |
| Charles City | Apr 30 | Oct 6 | 157 |
| Cherokee | May 4 | Oct 4 | 152 |
| Clarinda | Apr 25 | Oct 11 | 168 |
| Clear Lake | May 3 | Oct 1 | 150 |
| Clinton | Apr 22 | Oct 16 | 175 |
| Clive | Apr 18 | Oct 20 | 184 |
| Coralville | Apr 21 | Oct 18 | 180 |
| Council Bluffs | Apr 18 | Oct 21 | 185 |
| Creston | Apr 28 | Oct 11 | 164 |
| Davenport | Apr 19 | Oct 22 | 184 |
| DeWitt | Apr 22 | Oct 16 | 175 |
| Decorah | May 3 | Oct 7 | 157 |
| Denison | Apr 27 | Oct 11 | 166 |
| Des Moines | Apr 18 | Oct 20 | 184 |
| Dubuque | Apr 19 | Oct 21 | 184 |
| Eldridge | Apr 21 | Oct 17 | 176 |
| Estherville | May 2 | Oct 3 | 153 |
| Fairfield | Apr 27 | Oct 12 | 168 |
| Fort Dodge | Apr 28 | Oct 8 | 162 |
| Fort Madison | Apr 12 | Oct 25 | 194 |
| Glenwood | Apr 23 | Oct 11 | 170 |
| Grimes | Apr 19 | Oct 18 | 179 |
| Grinnell | May 3 | Oct 6 | 155 |
| Hiawatha | Apr 28 | Oct 12 | 166 |
| Independence | Apr 30 | Oct 7 | 159 |
| Indianola | Apr 24 | Oct 12 | 168 |
| Iowa City | Apr 21 | Oct 18 | 180 |
| Johnston | Apr 19 | Oct 18 | 179 |
| Keokuk | Apr 10 | Oct 27 | 198 |
| Knoxville | Apr 20 | Oct 19 | 180 |
| Le Mars | Apr 30 | Oct 4 | 157 |
| Manchester | May 3 | Oct 4 | 154 |
| Maquoketa | Apr 25 | Oct 14 | 171 |
| Marion | Apr 28 | Oct 12 | 166 |
| Marshalltown | Apr 28 | Oct 7 | 162 |
| Mason City | Apr 29 | Oct 7 | 161 |
| Mount Pleasant | Apr 30 | Oct 10 | 163 |
| Muscatine | Apr 24 | Oct 14 | 172 |
| Nevada | Apr 26 | Oct 12 | 168 |
| Newton | Apr 22 | Oct 17 | 174 |
| North Liberty | Apr 21 | Oct 18 | 180 |
| Norwalk | Apr 18 | Oct 20 | 184 |
| Oelwein | Apr 30 | Oct 9 | 163 |
| Orange City | Apr 30 | Oct 3 | 154 |
| Osceola | Apr 29 | Oct 9 | 162 |
| Oskaloosa | Apr 21 | Oct 16 | 176 |
| Ottumwa | Apr 23 | Oct 14 | 172 |
| Pella | Apr 20 | Oct 19 | 180 |
| Perry | Apr 25 | Oct 10 | 166 |
| Pleasant Hill | Apr 18 | Oct 20 | 184 |
| Polk City | Apr 19 | Oct 18 | 179 |
| Red Oak | Apr 24 | Oct 13 | 169 |
| Sergeant Bluff | Apr 29 | Oct 7 | 161 |
| Sheldon | May 5 | Sep 28 | 145 |
| Sioux Center | Apr 30 | Oct 3 | 154 |
| Sioux City | Apr 29 | Oct 7 | 161 |
| Spencer | May 1 | Oct 3 | 154 |
| Spirit Lake | Apr 28 | Oct 11 | 164 |
| Storm Lake | Apr 25 | Oct 13 | 170 |
| Tiffin | Apr 21 | Oct 18 | 180 |
| Urbandale | Apr 19 | Oct 18 | 179 |
| Washington | Apr 28 | Oct 11 | 165 |
| Waterloo | Apr 27 | Oct 10 | 165 |
| Waukee | Apr 18 | Oct 20 | 184 |
| Waverly | Apr 27 | Oct 10 | 165 |
| Webster City | May 3 | Oct 2 | 150 |
| West Des Moines | Apr 18 | Oct 20 | 184 |
| Windsor Heights | Apr 18 | Oct 20 | 184 |
| Winterset | Apr 30 | Oct 3 | 157 |