Last frost dates in Ohio
130 NOAA weather stations in Ohio have thirty years of frost records. The median station sees its last 32 °F night around Apr 24; across the state that ranges from Apr 8 to May 10, so pick the station nearest you rather than a state-wide figure.
| Plan sowing from this date | ||||||
|---|---|---|---|---|---|---|
| CLEVELAND BURKE AP | Apr 8 | Apr 20 | Mar 29 | Nov 12 | 217 | Plan sowing from this date → |
| SANDUSKY | Apr 10 | Apr 23 | Mar 31 | Nov 5 | 209 | Plan sowing from this date → |
| CINCINNATI-FERNBANK | Apr 13 | May 2 | Mar 31 | Oct 31 | 197 | Plan sowing from this date → |
| PAINESVILLE 4 NW | Apr 15 | Apr 27 | Apr 2 | Nov 9 | 209 | Plan sowing from this date → |
| CHEVIOT 3 W | Apr 16 | May 3 | Apr 2 | Oct 28 | 193 | Plan sowing from this date → |
| CHILO MELDAHL LOCKS & DAM | Apr 16 | May 4 | Apr 2 | Oct 31 | 196 | Plan sowing from this date → |
| CINCINNATI LUNKEN AP | Apr 16 | May 3 | Apr 2 | Oct 25 | 190 | Plan sowing from this date → |
| DAYTON INTL AP | Apr 16 | May 3 | Apr 2 | Oct 28 | 194 | Plan sowing from this date → |
| S PT | Apr 16 | May 4 | Apr 2 | Oct 30 | 196 | Plan sowing from this date → |
| CHEVIOT | Apr 17 | May 5 | Apr 2 | Oct 26 | 191 | Plan sowing from this date → |
| CIRCLEVILLE | Apr 17 | May 4 | Apr 2 | Oct 28 | 192 | Plan sowing from this date → |
| DAYTON WRIGHT BROS AP | Apr 17 | May 6 | Apr 3 | Oct 26 | 192 | Plan sowing from this date → |
| PORTSMOUTH-SCIOTOVILLE | Apr 17 | May 5 | Apr 3 | Oct 25 | 191 | Plan sowing from this date → |
| WFO WILMINGTON | Apr 17 | May 4 | Apr 3 | Oct 22 | 187 | Plan sowing from this date → |
| COLUMBUS PORT COLUMBUS INTL AP | Apr 18 | May 5 | Apr 4 | Oct 27 | 191 | Plan sowing from this date → |
| COSHOCTON AG RSCH STN | Apr 18 | May 5 | Apr 4 | Oct 28 | 190 | Plan sowing from this date → |
| DAYTON MCD | Apr 18 | May 5 | Apr 3 | Oct 25 | 189 | Plan sowing from this date → |
| GALLIPOLIS | Apr 18 | May 4 | Apr 3 | Oct 28 | 192 | Plan sowing from this date → |
| MARIETTA WWTP | Apr 18 | May 4 | Apr 5 | Oct 27 | 191 | Plan sowing from this date → |
| PIQUA WWTP | Apr 18 | May 5 | Apr 5 | Oct 23 | 186 | Plan sowing from this date → |
| XENIA 6 SSE | Apr 18 | May 4 | Apr 3 | Oct 24 | 188 | Plan sowing from this date → |
| BUCYRUS | Apr 19 | May 6 | Apr 5 | Oct 27 | 190 | Plan sowing from this date → |
| CINCINNATI | Apr 19 | May 6 | Apr 5 | Oct 22 | 185 | Plan sowing from this date → |
| FAIRFIELD | Apr 19 | May 7 | Apr 2 | Oct 22 | 186 | Plan sowing from this date → |
| FINDLAY AP | Apr 19 | May 6 | Apr 5 | Oct 23 | 185 | Plan sowing from this date → |
| MARYSVILLE | Apr 19 | May 5 | Apr 5 | Oct 26 | 188 | Plan sowing from this date → |
| PHILO 3 SW | Apr 19 | May 9 | Apr 2 | Oct 25 | 189 | Plan sowing from this date → |
| CHILLICOTHE MOUND CITY | Apr 20 | May 7 | Apr 6 | Oct 22 | 184 | Plan sowing from this date → |
| CLEVELAND | Apr 20 | May 5 | Apr 4 | Nov 3 | 198 | Plan sowing from this date → |
| COLUMBUS WCMH | Apr 20 | May 7 | Apr 5 | Oct 24 | 185 | Plan sowing from this date → |
| TOLEDO METCALF FLD | Apr 20 | May 7 | Apr 5 | Oct 27 | 188 | Plan sowing from this date → |
| WILMINGTON 3 N | Apr 20 | May 6 | Apr 6 | Oct 20 | 180 | Plan sowing from this date → |
| CADIZ | Apr 21 | May 5 | Apr 6 | Oct 25 | 186 | Plan sowing from this date → |
| FREMONT AG STN | Apr 21 | May 6 | Apr 8 | Oct 24 | 183 | Plan sowing from this date → |
| GREENVILLE WTP | Apr 21 | May 7 | Apr 7 | Oct 20 | 180 | Plan sowing from this date → |
| LUCASVILLE | Apr 21 | May 9 | Apr 6 | Oct 24 | 185 | Plan sowing from this date → |
| RAVENNA 2 S | Apr 21 | May 7 | Apr 8 | Oct 29 | 189 | Plan sowing from this date → |
| VAN WERT 1 S | Apr 21 | May 6 | Apr 7 | Oct 26 | 187 | Plan sowing from this date → |
| WAVERLY | Apr 21 | May 9 | Apr 4 | Oct 22 | 182 | Plan sowing from this date → |
| BOWLING GREEN WWTP | Apr 22 | May 7 | Apr 8 | Oct 25 | 186 | Plan sowing from this date → |
| COLUMBUS OHIO STATE UNIV AP | Apr 22 | May 9 | Apr 6 | Oct 23 | 183 | Plan sowing from this date → |
| DEFIANCE | Apr 22 | May 8 | Apr 10 | Oct 24 | 183 | Plan sowing from this date → |
| ELYRIA 3 E | Apr 22 | May 7 | Apr 6 | Nov 1 | 192 | Plan sowing from this date → |
| FINDLAY WPCC | Apr 22 | May 6 | Apr 9 | Oct 24 | 183 | Plan sowing from this date → |
| HAMILTON BUTLER CO RGNL AP | Apr 22 | May 10 | Apr 6 | Oct 18 | 178 | Plan sowing from this date → |
| HUNTSVILLE 3N | Apr 22 | May 6 | Apr 8 | Oct 27 | 188 | Plan sowing from this date → |
| JACKSON 3 NW | Apr 22 | May 11 | Apr 7 | Oct 21 | 181 | Plan sowing from this date → |
| KENTON | Apr 22 | May 7 | Apr 9 | Oct 24 | 182 | Plan sowing from this date → |
| LANCASTER | Apr 22 | May 9 | Apr 7 | Oct 24 | 183 | Plan sowing from this date → |
| LIMA ALLEN CO AP | Apr 22 | May 7 | Apr 7 | Oct 22 | 181 | Plan sowing from this date → |
| NEWARK HEATH AP | Apr 22 | May 10 | Apr 6 | Oct 18 | 178 | Plan sowing from this date → |
| TOLEDO EXPRESS AP | Apr 22 | May 7 | Apr 6 | Oct 24 | 188 | Plan sowing from this date → |
| WESTERVILLE | Apr 22 | May 10 | Apr 9 | Oct 24 | 183 | Plan sowing from this date → |
| COLUMBUS-VALLEY CROSSING | Apr 23 | May 8 | Apr 11 | Oct 19 | 177 | Plan sowing from this date → |
| MILFORD | Apr 23 | May 8 | Apr 9 | Oct 18 | 177 | Plan sowing from this date → |
| NAPOLEON 1SW | Apr 23 | May 9 | Apr 8 | Oct 24 | 183 | Plan sowing from this date → |
| NEWPORT | Apr 23 | May 10 | Apr 10 | Oct 26 | 185 | Plan sowing from this date → |
| PANDORA | Apr 23 | May 9 | Apr 10 | Oct 22 | 180 | Plan sowing from this date → |
| TIFFIN | Apr 23 | May 7 | Apr 8 | Oct 23 | 184 | Plan sowing from this date → |
| WASHINGTON COURT HOUSE | Apr 23 | May 8 | Apr 10 | Oct 21 | 181 | Plan sowing from this date → |
| AKRON CANTON RGNL AP | Apr 24 | May 11 | Apr 10 | Oct 26 | 184 | Plan sowing from this date → |
| AKRON FULTON INTL AP | Apr 24 | May 9 | Apr 10 | Oct 28 | 186 | Plan sowing from this date → |
| BEVERLY STP | Apr 24 | May 11 | Apr 11 | Oct 22 | 178 | Plan sowing from this date → |
| ELYRIA LORAIN CO AP | Apr 24 | May 10 | Apr 9 | Oct 24 | 182 | Plan sowing from this date → |
| FRANKLIN | Apr 24 | May 11 | Apr 9 | Oct 19 | 178 | Plan sowing from this date → |
| HILLSBORO | Apr 24 | May 11 | Apr 10 | Oct 20 | 178 | Plan sowing from this date → |
| HOYTVILLE 2 NE | Apr 24 | May 10 | Apr 11 | Oct 21 | 179 | Plan sowing from this date → |
| LIMA WWTP | Apr 24 | May 11 | Apr 12 | Oct 24 | 182 | Plan sowing from this date → |
| LONDON FISH HATCHERY | Apr 24 | May 10 | Apr 10 | Oct 18 | 175 | Plan sowing from this date → |
| MARION MUNI AP | Apr 24 | May 10 | Apr 11 | Oct 20 | 178 | Plan sowing from this date → |
| NAPOLEON | Apr 24 | May 7 | Apr 13 | Oct 21 | 179 | Plan sowing from this date → |
| NEW CARLISLE | Apr 24 | May 10 | Apr 10 | Oct 17 | 173 | Plan sowing from this date → |
| URBANA WWTP | Apr 24 | May 10 | Apr 10 | Oct 19 | 179 | Plan sowing from this date → |
| WOOSTER 3 SSE | Apr 24 | May 12 | Apr 10 | Oct 21 | 177 | Plan sowing from this date → |
| ATHENS OU | Apr 25 | May 12 | Apr 11 | Oct 23 | 179 | Plan sowing from this date → |
| EATON | Apr 25 | May 10 | Apr 11 | Oct 20 | 176 | Plan sowing from this date → |
| MARION 2 N | Apr 25 | May 11 | Apr 11 | Oct 20 | 178 | Plan sowing from this date → |
| NORWALK WWTP | Apr 25 | May 9 | Apr 11 | Oct 25 | 183 | Plan sowing from this date → |
| PAULDING | Apr 25 | May 10 | Apr 11 | Oct 19 | 175 | Plan sowing from this date → |
| SPRINGFIELD WTP | Apr 25 | May 12 | Apr 12 | Oct 19 | 175 | Plan sowing from this date → |
| BELLEFONTAINE | Apr 26 | May 12 | Apr 12 | Oct 20 | 175 | Plan sowing from this date → |
| BRYAN 2 SE | Apr 26 | May 11 | Apr 14 | Oct 17 | 170 | Plan sowing from this date → |
| FREMONT | Apr 26 | May 13 | Apr 11 | Oct 23 | 179 | Plan sowing from this date → |
| GALION WTR WKS | Apr 26 | May 11 | Apr 11 | Oct 20 | 176 | Plan sowing from this date → |
| HANNIBAL LOCKS & DAM | Apr 26 | May 13 | Apr 13 | Oct 26 | 182 | Plan sowing from this date → |
| KIRTLAND-HOLDEN 2 | Apr 26 | May 14 | Apr 11 | Oct 31 | 184 | Plan sowing from this date → |
| LANCASTER FAIRFIELD AP | Apr 26 | May 12 | Apr 12 | Oct 13 | 169 | Plan sowing from this date → |
| MANSFIELD LAHM MUNI AP | Apr 26 | May 12 | Apr 14 | Oct 22 | 177 | Plan sowing from this date → |
| NEW PHILADELPHIA FLD | Apr 26 | May 15 | Apr 14 | Oct 21 | 176 | Plan sowing from this date → |
| ZANESVILLE MUNI AP | Apr 26 | May 14 | Apr 11 | Oct 19 | 177 | Plan sowing from this date → |
| BARNESVILLE | Apr 27 | May 13 | Apr 14 | Oct 22 | 177 | Plan sowing from this date → |
| CARPENTER 2 S | Apr 27 | May 15 | Apr 11 | Oct 14 | 168 | Plan sowing from this date → |
| CELINA 3 NE | Apr 27 | May 10 | Apr 12 | Oct 19 | 175 | Plan sowing from this date → |
| CENTERBURG 2 SE | Apr 27 | May 13 | Apr 13 | Oct 17 | 172 | Plan sowing from this date → |
| COSHOCTON WPC PLT | Apr 27 | May 16 | Apr 13 | Oct 18 | 174 | Plan sowing from this date → |
| MC CONNELLSVILLE LK 7 | Apr 27 | May 14 | Apr 13 | Oct 21 | 176 | Plan sowing from this date → |
| OBERLIN | Apr 27 | May 14 | Apr 13 | Oct 22 | 178 | Plan sowing from this date → |
| SIDNEY 1 S | Apr 27 | May 12 | Apr 12 | Oct 20 | 175 | Plan sowing from this date → |
| CAMBRIDGE | Apr 28 | May 15 | Apr 13 | Oct 17 | 172 | Plan sowing from this date → |
| DEFIANCE MEM AP | Apr 28 | May 14 | Apr 13 | Oct 17 | 170 | Plan sowing from this date → |
| HICKSVILLE | Apr 28 | May 13 | Apr 14 | Oct 17 | 170 | Plan sowing from this date → |
| MONTPELIER | Apr 28 | May 12 | Apr 15 | Oct 18 | 173 | Plan sowing from this date → |
| CHIPPEWA LAKE | Apr 29 | May 15 | Apr 15 | Oct 19 | 172 | Plan sowing from this date → |
| DENNISON WTR WKS | Apr 29 | May 17 | Apr 17 | Oct 15 | 170 | Plan sowing from this date → |
| NEWARK WTR WKS | Apr 29 | May 17 | Apr 17 | Oct 16 | 167 | Plan sowing from this date → |
| RIPLEY EXP FARM | Apr 29 | May 16 | Apr 17 | Oct 11 | 162 | Plan sowing from this date → |
| STEUBENVILLE | Apr 29 | May 15 | Apr 16 | Oct 20 | 175 | Plan sowing from this date → |
| UPPER SANDUSKY | Apr 29 | May 14 | Apr 13 | Oct 17 | 171 | Plan sowing from this date → |
| WAUSEON WTP | Apr 29 | May 16 | Apr 14 | Oct 16 | 170 | Plan sowing from this date → |
| WOOSTER WAYNE CO AP | Apr 29 | May 15 | Apr 15 | Oct 14 | 167 | Plan sowing from this date → |
| ASHLAND 2 SW | Apr 30 | May 15 | Apr 16 | Oct 15 | 168 | Plan sowing from this date → |
| CALDWELL 3SE | Apr 30 | May 20 | Apr 15 | Oct 14 | 167 | Plan sowing from this date → |
| LOGAN | Apr 30 | May 17 | Apr 18 | Oct 14 | 167 | Plan sowing from this date → |
| MANSFIELD 5 W | Apr 30 | May 17 | Apr 16 | Oct 15 | 167 | Plan sowing from this date → |
| MOSQUITO CREEK LAKE | Apr 30 | May 16 | Apr 16 | Oct 23 | 176 | Plan sowing from this date → |
| NEW LEXINGTON 2 NW | Apr 30 | May 16 | Apr 17 | Oct 17 | 168 | Plan sowing from this date → |
| NEW PHILADELPHIA | Apr 30 | May 17 | Apr 18 | Oct 15 | 167 | Plan sowing from this date → |
| STOW 4 SE | Apr 30 | May 16 | Apr 17 | Oct 21 | 173 | Plan sowing from this date → |
| WATERLOO | Apr 30 | May 16 | Apr 15 | Oct 15 | 167 | Plan sowing from this date → |
| WOOSTER EXP STATION | Apr 30 | May 18 | Apr 17 | Oct 12 | 163 | Plan sowing from this date → |
| FREDERICKTOWN 4 S | May 1 | May 18 | Apr 18 | Oct 10 | 161 | Plan sowing from this date → |
| HIRAM | May 1 | May 18 | Apr 18 | Oct 20 | 170 | Plan sowing from this date → |
| YOUNGSTOWN RGNL AP | May 1 | May 20 | Apr 16 | Oct 17 | 167 | Plan sowing from this date → |
| ASHTABULA CO AP | May 2 | May 20 | Apr 18 | Oct 21 | 171 | Plan sowing from this date → |
| DANVILLE 2 W | May 2 | May 19 | Apr 20 | Oct 8 | 157 | Plan sowing from this date → |
| MILLERSBURG | May 2 | May 21 | Apr 18 | Oct 14 | 164 | Plan sowing from this date → |
| MILLPORT 4 NE | May 2 | May 20 | Apr 18 | Oct 13 | 165 | Plan sowing from this date → |
| CHARDON | May 5 | May 21 | Apr 22 | Oct 18 | 164 | Plan sowing from this date → |
| WARREN 3 S | May 8 | May 25 | Apr 23 | Oct 12 | 157 | Plan sowing from this date → |
| DORSET | May 10 | May 27 | Apr 25 | Oct 10 | 154 | Plan sowing from this date → |
How to read the three dates
Average is the date by which, in half of the years between 1991 and 2020, the last 32 °F night had already happened. Safe is later: only one year in ten saw a frost after it, which is the date to transplant tomatoes and peppers, both killed by a single frost. Early is the risky end, with a frost after it in nine years out of ten.
Every figure is for the weather station, not for your garden. A valley bottom, a north slope or a spot near a lake can run a week or two either way. Cities are warmer than the countryside around them.
Where the numbers come from
The dates are NOAA's U.S. Climate Normals for 1991 to 2020, computed by the National Centers for Environmental Information for every station with thirty years of daily minimum temperatures. ZIP codes are matched to the nearest such station within 150 km using U.S. Census Bureau ZIP Code Tabulation Area centroids. Stations that never see a frost, such as much of south Florida, report no date and are left out.