| City | Population | Last spring frost | First fall frost | Growing season | Zone |
|---|---|---|---|---|---|
| Milwaukee | 562,407 | Apr 26 | Oct 18 | 173 days | 6a |
| Madison | 286,233 | May 1 | Oct 9 | 161 days | 5a |
| Green Bay | 106,675 | May 7 | Oct 9 | 154 days | 5b |
| Kenosha | 99,239 | Apr 28 | Oct 19 | 174 days | 5b |
| Racine | 77,908 | Apr 20 | Oct 24 | 184 days | 6a |
| Appleton | 75,452 | May 4 | Oct 6 | 154 days | 5b |
| Eau Claire | 72,465 | Apr 24 | Oct 14 | 170 days | 4b |
| Waukesha | 70,872 | May 1 | Oct 13 | 162 days | 5b |
| Oshkosh | 67,460 | Apr 24 | Oct 20 | 178 days | 5b |
| Janesville | 66,929 | Apr 26 | Oct 15 | 170 days | 5b |
| West Allis | 60,119 | Apr 26 | Oct 22 | 177 days | 5b |
| La Crosse | 50,784 | Apr 27 | Oct 13 | 167 days | 5a |
| Sheboygan | 49,376 | Apr 25 | Oct 23 | 179 days | 6a |
| Wauwatosa | 48,649 | Apr 26 | Oct 18 | 173 days | 5b |
| Fond du Lac | 44,541 | Apr 27 | Oct 19 | 174 days | 5b |
| Brookfield | 41,448 | Apr 30 | Oct 14 | 164 days | 5b |
| Menomonee Falls | 41,291 | May 6 | Oct 8 | 154 days | 5b |
| Wausau | 40,188 | May 6 | Oct 4 | 150 days | 4b |
| New Berlin | 39,953 | May 3 | Oct 14 | 162 days | 5b |
| Sun Prairie | 39,227 | May 1 | Oct 10 | 160 days | 5a |
| Oak Creek | 38,296 | Apr 22 | Oct 26 | 184 days | 6a |
| Greenfield | 37,159 | May 3 | Oct 14 | 162 days | 5b |
| Franklin | 36,687 | May 3 | Oct 14 | 162 days | 5b |
| Beloit | 36,649 | May 1 | Oct 12 | 162 days | 5b |
| Manitowoc | 34,671 | Apr 30 | Oct 20 | 171 days | 5b |
| Fitchburg | 34,615 | May 1 | Oct 9 | 161 days | 5b |
| West Bend | 32,268 | May 1 | Oct 12 | 161 days | 5b |
| Mount Pleasant | 28,253 | Apr 20 | Oct 24 | 184 days | 5b |
| Neenah | 27,638 | May 4 | Oct 6 | 154 days | 5b |
| Superior | 26,397 | May 6 | Oct 9 | 154 days | 5a |
| Stevens Point | 26,377 | May 4 | Oct 7 | 155 days | 4b |
| Muskego | 25,602 | May 3 | Oct 14 | 162 days | 5b |
| De Pere | 25,590 | Apr 30 | Oct 9 | 161 days | 5b |
| Caledonia | 25,229 | Apr 24 | Oct 24 | 180 days | 6a |
| Mequon | 25,120 | May 6 | Oct 8 | 154 days | 5b |
| Middleton | 23,115 | Apr 28 | Oct 15 | 169 days | 5a |
| Watertown | 22,704 | Apr 28 | Oct 12 | 167 days | 5b |
| Howard | 22,233 | May 7 | Oct 9 | 154 days | 5b |
| Pleasant Prairie | 21,798 | Apr 19 | Oct 26 | 189 days | 5b |
| Germantown | 21,050 | May 6 | Oct 8 | 154 days | 5b |
| Onalaska | 20,297 | Apr 23 | Oct 17 | 177 days | 5a |
| South Milwaukee | 20,191 | Apr 22 | Oct 26 | 184 days | 6a |
| Oconomowoc | 20,119 | Apr 30 | Oct 12 | 164 days | 5b |
| Fox Crossing | 19,320 | May 4 | Oct 6 | 154 days | 5b |
| Marshfield | 18,980 | May 5 | Oct 5 | 152 days | 4b |
| Wisconsin Rapids | 18,654 | May 9 | Sep 30 | 142 days | 4b |
| Kaukauna | 18,517 | May 4 | Oct 6 | 154 days | 5b |
| Menasha | 18,385 | May 4 | Oct 6 | 154 days | 5b |
| River Falls | 17,916 | May 11 | Oct 1 | 143 days | 4b |
| Cudahy | 17,655 | Apr 19 | Oct 29 | 192 days | 6a |
| Ashwaubenon | 17,398 | Apr 30 | Oct 9 | 161 days | 5b |
| Verona | 16,821 | Apr 28 | Oct 15 | 169 days | 5a |
| Bellevue | 16,776 | Apr 30 | Oct 9 | 161 days | 5b |
| Menomonie | 16,664 | May 9 | Oct 1 | 143 days | 4b |
| Beaver Dam | 16,542 | May 2 | Oct 9 | 157 days | 5a |
| Waunakee | 16,411 | May 1 | Oct 10 | 160 days | 5a |
| Pewaukee | 16,375 | Apr 30 | Oct 14 | 164 days | 5b |
| Whitewater | 16,038 | May 2 | Oct 9 | 157 days | 5b |
| Hartford | 16,005 | May 8 | Oct 3 | 148 days | 5a |
| Weston | 15,931 | May 6 | Oct 4 | 150 days | 4b |
| Chippewa Falls | 15,293 | May 8 | Oct 4 | 149 days | 4b |
| Hudson | 15,019 | Apr 22 | Oct 19 | 178 days | 4b |
| Glendale | 14,795 | Apr 26 | Oct 18 | 173 days | 6a |
| Harrison | 14,492 | May 4 | Oct 6 | 154 days | 5b |
| Whitefish Bay | 14,489 | Apr 26 | Oct 18 | 173 days | 6a |
| Greendale | 14,426 | May 3 | Oct 14 | 162 days | 5b |
| Plover | 14,274 | May 4 | Oct 7 | 155 days | 4b |
| Salem Lakes | 14,271 | Apr 30 | Oct 15 | 167 days | 5b |
| Allouez | 13,838 | Apr 30 | Oct 9 | 161 days | 5b |
| Shorewood | 13,474 | Apr 26 | Oct 18 | 173 days | 6a |
| Grafton | 13,389 | Apr 23 | Oct 24 | 182 days | 6a |
| Greenville | 13,388 | May 4 | Oct 6 | 154 days | 5b |
| Stoughton | 13,256 | Apr 30 | Oct 11 | 163 days | 5b |
| Baraboo | 13,224 | May 5 | Oct 5 | 152 days | 5a |
| Suamico | 13,153 | May 7 | Oct 9 | 154 days | 5b |
| DeForest | 13,094 | May 4 | Oct 6 | 154 days | 5a |
| Cedarburg | 12,916 | Apr 23 | Oct 24 | 182 days | 5b |
| Brown Deer | 12,821 | Apr 26 | Oct 18 | 173 days | 6a |
| Sussex | 12,779 | Apr 30 | Oct 16 | 167 days | 5b |
| Port Washington | 12,658 | Apr 27 | Oct 22 | 176 days | 5b |
| Fort Atkinson | 12,388 | Apr 28 | Oct 13 | 166 days | 5b |
| Holmen | 12,105 | Apr 23 | Oct 17 | 177 days | 5a |
| Oregon | 12,015 | May 1 | Oct 9 | 161 days | 5a |
| Platteville | 11,815 | Apr 30 | Oct 13 | 166 days | 5a |
| Little Chute | 11,800 | May 4 | Oct 6 | 154 days | 5b |
| Richfield | 11,785 | Apr 30 | Oct 16 | 167 days | 5a |
| Hobart | 11,674 | May 1 | Oct 11 | 160 days | 5b |
| Two Rivers | 11,222 | Apr 27 | Oct 21 | 175 days | 5b |
| Marinette | 11,168 | May 4 | Oct 11 | 160 days | 5b |
| Lisbon | 11,150 | Apr 30 | Oct 16 | 167 days | 5b |
| Waupun | 11,150 | May 1 | Oct 11 | 163 days | 5a |
| New Richmond | 10,988 | Apr 22 | Oct 19 | 178 days | 4b |
| Burlington | 10,951 | May 5 | Oct 9 | 156 days | 5b |
| Hartland | 10,740 | May 1 | Oct 13 | 162 days | 5b |
| Reedsburg | 10,641 | May 2 | Oct 7 | 156 days | 5a |
| Monroe | 10,581 | Apr 27 | Oct 14 | 170 days | 5a |
| Windsor | 10,085 | May 4 | Oct 6 | 154 days | 5a |
| Elkhorn | 10,045 | Apr 28 | Oct 14 | 168 days | 5b |
| Sparta | 9,974 | May 9 | Oct 1 | 144 days | 4b |
| Portage | 9,956 | Apr 28 | Oct 10 | 164 days | 5a |
| Sturgeon Bay | 9,917 | May 8 | Oct 13 | 157 days | 5b |
| Shawano | 9,693 | May 9 | Oct 2 | 144 days | 5a |
| Tomah | 9,600 | May 6 | Oct 3 | 148 days | 4b |
| Merrill | 9,389 | May 11 | Sep 30 | 139 days | 4b |
| Altoona | 9,376 | Apr 24 | Oct 14 | 170 days | 4b |
| Delavan | 9,228 | Apr 28 | Oct 14 | 168 days | 5b |
| McFarland | 9,145 | May 1 | Oct 9 | 161 days | 5b |
| St. Francis | 8,955 | Apr 19 | Oct 29 | 192 days | 6a |
| Cottage Grove | 8,930 | May 1 | Oct 10 | 160 days | 5b |
| Rice Lake | 8,882 | May 8 | Oct 2 | 145 days | 4b |
| Plymouth | 8,821 | May 3 | Oct 10 | 159 days | 5b |
| Lake Geneva | 8,818 | Apr 25 | Oct 21 | 179 days | 5b |
| Sheboygan Falls | 8,687 | May 5 | Oct 8 | 154 days | 5b |
| Monona | 8,664 | May 1 | Oct 9 | 161 days | 5b |
| Mukwonago | 8,544 | May 5 | Oct 10 | 156 days | 5b |
| Waukesha | 8,507 | May 1 | Oct 13 | 162 days | 5b |
| Kronenwetter | 8,413 | May 6 | Oct 4 | 150 days | 5a |
| Jackson | 8,322 | Apr 30 | Oct 15 | 167 days | 5b |
| Rhinelander | 8,242 | May 26 | Sep 23 | 120 days | 4b |
| Pewaukee | 8,216 | Apr 30 | Oct 14 | 164 days | 5b |
| Somers | 8,171 | Apr 28 | Oct 19 | 174 days | 5b |
| Antigo | 8,060 | May 14 | Sep 30 | 139 days | 4b |
| Ashland | 7,927 | May 20 | Oct 2 | 133 days | 5a |
| Jefferson | 7,814 | Apr 25 | Oct 18 | 173 days | 5b |
| Hales Corners | 7,740 | May 3 | Oct 14 | 162 days | 5b |
| Ripon | 7,738 | May 1 | Oct 11 | 163 days | 5a |
| New London | 7,726 | May 4 | Oct 6 | 153 days | 5a |
| Mount Horeb | 7,725 | May 7 | Oct 1 | 148 days | 5a |
| Kimberly | 7,556 | May 4 | Oct 6 | 154 days | 5b |
| Vernon | 7,464 | May 1 | Oct 13 | 162 days | 5b |
| Lake Hallie | 7,396 | May 8 | Oct 4 | 149 days | 4b |
| Delafield | 7,314 | Apr 30 | Oct 12 | 164 days | 5b |
| Rib Mountain | 7,280 | May 6 | Oct 4 | 150 days | 5a |
| Sturtevant | 6,852 | Apr 20 | Oct 24 | 184 days | 5b |
| Lake Mills | 6,655 | Apr 29 | Oct 14 | 167 days | 5b |
| Fox Point | 6,583 | Apr 26 | Oct 18 | 173 days | 6a |
| Slinger | 6,495 | May 5 | Oct 5 | 152 days | 5a |
| Bloomfield | 6,369 | Apr 30 | Oct 13 | 164 days | 5b |
| Elm Grove | 6,354 | Apr 26 | Oct 18 | 173 days | 5b |
| Waupaca | 6,352 | May 8 | Oct 6 | 151 days | 5a |
| Twin Lakes | 6,338 | Apr 30 | Oct 13 | 164 days | 5b |
| Edgerton | 6,121 | Apr 30 | Oct 11 | 163 days | 5b |
| Waterford | 6,025 | May 5 | Oct 10 | 156 days | 5b |
| Milton | 6,024 | Apr 28 | Oct 13 | 166 days | 5b |
| Evansville | 5,837 | Apr 30 | Oct 11 | 163 days | 5b |
| Rothschild | 5,627 | May 6 | Oct 4 | 150 days | 5a |
| Berlin | 5,588 | May 1 | Oct 8 | 158 days | 5a |
| North Fond du Lac | 5,425 | May 1 | Oct 12 | 162 days | 5b |
| Prairie du Chien | 5,408 | Apr 28 | Oct 12 | 166 days | 5a |
| Columbus | 5,400 | Apr 30 | Oct 9 | 163 days | 5a |
| Union Grove | 5,370 | May 5 | Oct 8 | 156 days | 5b |
| Summit | 5,323 | Apr 30 | Oct 12 | 164 days | 5b |
| Bristol | 5,300 | Apr 30 | Oct 15 | 167 days | 5b |
| West Salem | 5,288 | Apr 27 | Oct 13 | 167 days | 5a |
| Mayville | 5,184 | May 1 | Oct 10 | 158 days | 5a |
| Dodgeville | 5,076 | May 3 | Oct 7 | 157 days | 5a |
| Richland Center | 5,020 | May 5 | Oct 6 | 154 days | 5a |