Indiana frost dates
Across 117 weather stations in Indiana, the median last spring frost runs from Mar 29 in Evansville Museum to May 2 in Garrett 1 mi S, and the first fall frost from Oct 9 to Nov 10.
Indiana at a glance
- Weather stations
- 117
- Earliest last frost
- Mar 29 Evansville Museum
- Latest last frost
- May 2 Garrett 1 mi S
- Longest season
- 225 days Evansville Museum
- Typical season
- about 181 frost-free days
- Hardiness zones
- Zones 5b to 7a
Frost dates by weather station
| Weather station | Last spring frost | First fall frost | Frost-free days | Zone |
|---|---|---|---|---|
| Anderson Sewage Plant | Apr 19 | Oct 23 | 186 | 6a |
| Angola | Apr 30 | Oct 16 | 167 | 6a |
| Attica | Apr 22 | Oct 17 | 176 | 6a |
| Bedford | Apr 10 | Oct 30 | 201 | 6b |
| Berne Wastewater Plant | Apr 23 | Oct 22 | 181 | 6a |
| Bloomington Indiana University | Apr 15 | Oct 26 | 192 | 6b |
| Bloomington Monroe County Airport | Apr 17 | Oct 22 | 185 | 6b |
| Bluffton | Apr 24 | Oct 20 | 179 | 6a |
| Boonville | Apr 12 | Oct 25 | 196 | 7a |
| Boswell | Apr 25 | Oct 13 | 169 | 6a |
| Brookville | Apr 20 | Oct 21 | 182 | 6a |
| Cambridge City | Apr 27 | Oct 9 | 164 | 6a |
| Cannelton | Apr 2 | Nov 7 | 218 | 7a |
| Carmel | Apr 21 | Oct 21 | 183 | 6a |
| Castleton | Apr 18 | Oct 26 | 190 | 6a |
| Chalmers | Apr 25 | Oct 17 | 173 | 6a |
| Columbia City | Apr 27 | Oct 17 | 171 | 6a |
| Columbus | Apr 11 | Oct 25 | 195 | 6b |
| Crane Nsa | Apr 9 | Oct 31 | 202 | 6b |
| Crawfordsville | Apr 27 | Oct 12 | 167 | 6a |
| Decatur | Apr 23 | Oct 19 | 178 | 6a |
| Delphi | Apr 22 | Oct 17 | 179 | 6a |
| Dubois S In Forage Farm | Apr 25 | Oct 15 | 172 | 6b |
| Elnora | Apr 9 | Oct 25 | 197 | 6b |
| Elwood | Apr 24 | Oct 18 | 175 | 6a |
| English | Apr 17 | Oct 19 | 184 | 6b |
| Evansville Museum | Mar 29 | Nov 10 | 225 | 7a |
| Evansville Regional Airport | Apr 4 | Oct 29 | 206 | 7a |
| Farmersburg Tv-2 | Apr 8 | Oct 27 | 201 | 6b |
| Farmland | Apr 25 | Oct 16 | 173 | 6a |
| Fort Wayne International Airport | Apr 24 | Oct 21 | 178 | 6a |
| Francesville | Apr 26 | Oct 17 | 173 | 5b |
| Frankfort Disposal | Apr 21 | Oct 21 | 181 | 6a |
| Franklin Wastewater Plant | Apr 20 | Oct 19 | 180 | 6b |
| Freelandville | Apr 9 | Oct 30 | 202 | 6b |
| Garrett | Apr 29 | Oct 17 | 171 | 6a |
| Garrett 1 mi S | May 2 | Oct 10 | 159 | 6a |
| Goshen | Apr 26 | Oct 21 | 175 | 6a |
| Goshen Municipal Airport | Apr 28 | Oct 19 | 171 | 6a |
| Greencastle | Apr 27 | Oct 15 | 169 | 6a |
| Greenfield | Apr 19 | Oct 22 | 185 | 6a |
| Greensburg | Apr 15 | Oct 26 | 194 | 6b |
| Hartford City | Apr 22 | Oct 22 | 181 | 6a |
| Huntington | May 1 | Oct 14 | 166 | 6a |
| Indiana Dunes Nl | Apr 22 | Oct 27 | 188 | 6a |
| Indianapolis | Apr 15 | Oct 26 | 193 | 6b |
| Indianapolis Eagle Creek Airport | Apr 12 | Oct 29 | 198 | 6a |
| Indianapolis Nwfo | Apr 12 | Oct 27 | 196 | 6b |
| Indianapolis SE Side | Apr 20 | Oct 21 | 183 | 6b |
| Jamestown | Apr 23 | Oct 19 | 178 | 6a |
| Jt Myers Locks & Dam | Apr 5 | Oct 31 | 209 | 7a |
| Kentland | Apr 23 | Oct 14 | 175 | 5b |
| Knox Wastewater Plant | Apr 26 | Oct 19 | 174 | 5b |
| Kokomo | Apr 27 | Oct 18 | 174 | 6a |
| Lafayette | Apr 20 | Oct 20 | 182 | 6a |
| Lafayette Purdue University Airport | Apr 26 | Oct 18 | 173 | 6a |
| Lagrange | Apr 26 | Oct 21 | 176 | 6a |
| Lakeville | May 1 | Oct 13 | 163 | 6a |
| Laporte | Apr 19 | Oct 27 | 191 | 6a |
| Logansport Cicott St. | Apr 20 | Oct 23 | 185 | 6a |
| Lowell | Apr 29 | Oct 16 | 171 | 5b |
| Madison Sewage Plant | Apr 11 | Oct 31 | 201 | 6b |
| Marion | Apr 26 | Oct 20 | 175 | 6a |
| Martinsville | Apr 24 | Oct 15 | 173 | 6a |
| Milan | Apr 30 | Oct 16 | 168 | 6b |
| Mount Vernon | Apr 7 | Oct 28 | 202 | 7a |
| Muncie Delaware County Airport | Apr 16 | Oct 25 | 190 | 6a |
| New Castle | Apr 27 | Oct 17 | 173 | 6a |
| Newburgh Lock and Dam | Apr 3 | Nov 2 | 214 | 7a |
| North Manchester Wastewater Plant | Apr 26 | Oct 19 | 174 | 6a |
| North Vernon | Apr 21 | Oct 21 | 180 | 6b |
| Northern Indiana | Apr 24 | Oct 24 | 182 | 6a |
| Oolitic Purdue Ex Farm | Apr 20 | Oct 20 | 181 | 6b |
| Paoli | Apr 21 | Oct 18 | 178 | 6b |
| Patoka Lake | Apr 10 | Nov 1 | 204 | 6b |
| Perrysville | Apr 23 | Oct 14 | 171 | 6a |
| Petersburg 61 Bridge | Apr 20 | Oct 22 | 186 | 6b |
| Plymouth | Apr 25 | Oct 21 | 178 | 6a |
| Portland | Apr 28 | Oct 15 | 171 | 6a |
| Princeton | Apr 13 | Oct 25 | 194 | 6b |
| Rensselaer | Apr 23 | Oct 18 | 177 | 6a |
| Richmond Water Works | Apr 24 | Oct 20 | 180 | 6a |
| Rochester | Apr 23 | Oct 21 | 180 | 6a |
| Rockville | Apr 30 | Oct 12 | 164 | 6a |
| Rushville | Apr 19 | Oct 23 | 185 | 6a |
| Saint Meinrad | Apr 11 | Oct 26 | 197 | 6b |
| Salem | Apr 17 | Oct 22 | 186 | 6b |
| Scottsburg | Apr 18 | Oct 20 | 185 | 6b |
| Seymour | Apr 16 | Oct 21 | 187 | 6b |
| Shakamak State Park | Apr 14 | Oct 26 | 193 | 6a |
| Shelbyville Municipal Airport | Apr 14 | Oct 23 | 191 | 6a |
| Shelbyville Sewage Plant | Apr 17 | Oct 22 | 187 | 6a |
| Shoals | Apr 15 | Oct 23 | 189 | 6b |
| South Bend | Apr 23 | Oct 23 | 181 | 6a |
| South Bend Michiana Regional Airport | May 1 | Oct 19 | 170 | 6a |
| Spencer | Apr 20 | Oct 20 | 180 | 6a |
| Stendal | Apr 6 | Oct 30 | 206 | 7a |
| Tell City | Apr 5 | Nov 1 | 208 | 7a |
| Terre Haute Caa Airport | Apr 14 | Oct 24 | 192 | 6a |
| Terre Haute Hulman Regional Airport | Apr 16 | Oct 18 | 183 | 6a |
| Terre Haute Indiana State | Apr 15 | Oct 19 | 187 | 6a |
| Tipton | Apr 23 | Oct 17 | 174 | 6a |
| Valparaiso Porter County Municipal Airport | Apr 20 | Oct 26 | 187 | 6a |
| Valparaiso Water Works | Apr 22 | Oct 25 | 185 | 6a |
| Vevay | Apr 9 | Nov 1 | 204 | 6b |
| Vincennes | Apr 11 | Oct 26 | 197 | 6b |
| Wabash | Apr 23 | Oct 21 | 181 | 6a |
| Wanatah | Apr 29 | Oct 13 | 166 | 5b |
| Warsaw | Apr 28 | Oct 18 | 170 | 6a |
| Washington | Apr 10 | Oct 25 | 197 | 6b |
| West Lafayette | Apr 26 | Oct 12 | 169 | 6a |
| Wheatfield | Apr 25 | Oct 17 | 173 | 5b |
| Whitestown | Apr 21 | Oct 20 | 180 | 6a |
| Winamac | Apr 25 | Oct 18 | 173 | 5b |
| Winchester Airport | Apr 20 | Oct 21 | 183 | 6a |
| Woodburn | Apr 27 | Oct 19 | 174 | 6a |
| Young America | Apr 25 | Oct 17 | 174 | 6a |
Median dates from NOAA 1991–2020 climate normals. How to read them.