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Ohio frost dates by weather station

Ohio has 130 NOAA weather stations with 1991–2020 freeze statistics. Median last spring frost dates run from Apr 8 at Cleveland Burke Airport to May 10 at Dorset.

130Stations
Apr 8Earliest last frostCleveland Burke Airport
May 10Latest last frostDorset
217 daysLongest growing seasonCleveland Burke Airport

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Ohio stations: median (50%) frost dates at 32°F
Station	Last spring frost	First fall frost	Growing season	Elevation
Akron Canton Regional Airport	Apr 24	Oct 26	184 days	1,208 ft
Akron Fulton Intl Airport	Apr 24	Oct 28	186 days	1,044 ft
Ashland 2 SW	Apr 30	Oct 15	168 days	1,265 ft
Ashtabula Co Airport	May 2	Oct 21	171 days	924 ft
Athens Ou	Apr 25	Oct 23	179 days	684 ft
Barnesville	Apr 27	Oct 22	177 days	1,280 ft
Bellefontaine	Apr 26	Oct 20	175 days	1,176 ft
Beverly Stp	Apr 24	Oct 22	178 days	624 ft
Bowling Green Wastewater Plant	Apr 22	Oct 25	186 days	675 ft
Bryan 2 SE	Apr 26	Oct 17	170 days	730 ft
Bucyrus	Apr 19	Oct 27	190 days	955 ft
Cadiz	Apr 21	Oct 25	186 days	1,260 ft
Caldwell 3se	Apr 30	Oct 14	167 days	880 ft
Cambridge	Apr 28	Oct 17	172 days	800 ft
Carpenter 2 S	Apr 27	Oct 14	168 days	822 ft
Celina 3 NE	Apr 27	Oct 19	175 days	866 ft
Centerburg 2 SE	Apr 27	Oct 17	172 days	1,205 ft
Chardon	May 5	Oct 18	164 days	1,130 ft
Cheviot	Apr 17	Oct 26	191 days	891 ft
Cheviot 3 W	Apr 16	Oct 28	193 days	853 ft
Chillicothe Mound City	Apr 20	Oct 22	184 days	650 ft
Chilo Meldahl Locks & Dam	Apr 16	Oct 31	196 days	480 ft
Chippewa Lake	Apr 29	Oct 19	172 days	1,180 ft
Cincinnati	Apr 19	Oct 22	185 days	1,056 ft
Cincinnati Lunken Airport	Apr 16	Oct 25	190 days	490 ft
Cincinnati-Fernbank	Apr 13	Oct 31	197 days	500 ft
Circleville	Apr 17	Oct 28	192 days	675 ft
Cleveland	Apr 20	Nov 3	198 days	763 ft
Cleveland Burke Airport	Apr 8	Nov 12	217 days	584 ft
Columbus Ohio State Univ Airport	Apr 22	Oct 23	183 days	905 ft
Columbus Port Columbus Intl Airport	Apr 18	Oct 27	191 days	810 ft
Columbus Wcmh	Apr 20	Oct 24	185 days	740 ft
Columbus-Valley Crossing	Apr 23	Oct 19	177 days	760 ft
Coshocton Ag Rsch Station	Apr 18	Oct 28	190 days	1,140 ft
Coshocton Wpc Plant	Apr 27	Oct 18	174 days	760 ft
Danville 2 W	May 2	Oct 8	157 days	970 ft
Dayton Intl Airport	Apr 16	Oct 28	194 days	1,000 ft
Dayton McD	Apr 18	Oct 25	189 days	720 ft
Dayton Wright Bros Airport	Apr 17	Oct 26	192 days	962 ft
Defiance	Apr 22	Oct 24	183 days	700 ft
Defiance Mem Airport	Apr 28	Oct 17	170 days	708 ft
Dennison Wtr Wks	Apr 29	Oct 15	170 days	860 ft
Dorset	May 10	Oct 10	154 days	980 ft
Eaton	Apr 25	Oct 20	176 days	1,002 ft
Elyria 3 E	Apr 22	Nov 1	192 days	730 ft
Elyria Lorain Co Airport	Apr 24	Oct 24	182 days	794 ft
Fairfield	Apr 19	Oct 22	186 days	575 ft
Findlay Airport	Apr 19	Oct 23	185 days	800 ft
Findlay Wpcc	Apr 22	Oct 24	183 days	768 ft
Franklin	Apr 24	Oct 19	178 days	679 ft
Fredericktown 4 S	May 1	Oct 10	161 days	1,050 ft
Fremont	Apr 26	Oct 23	179 days	600 ft
Fremont Ag Station	Apr 21	Oct 24	183 days	664 ft
Galion Wtr Wks	Apr 26	Oct 20	176 days	1,170 ft
Gallipolis	Apr 18	Oct 28	192 days	578 ft
Greenville Water Plant	Apr 21	Oct 20	180 days	1,030 ft
Hamilton Butler Co Regional Airport	Apr 22	Oct 18	178 days	634 ft
Hannibal Locks & Dam	Apr 26	Oct 26	182 days	620 ft
Hicksville	Apr 28	Oct 17	170 days	750 ft
Hillsboro	Apr 24	Oct 20	178 days	953 ft
Hiram	May 1	Oct 20	170 days	1,230 ft
Hoytville 2 NE	Apr 24	Oct 21	179 days	700 ft
Huntsville 3n	Apr 22	Oct 27	188 days	1,034 ft
Jackson 3 NW	Apr 22	Oct 21	181 days	845 ft
Kenton	Apr 22	Oct 24	182 days	997 ft
Kirtland-Holden 2	Apr 26	Oct 31	184 days	1,030 ft
Lancaster	Apr 22	Oct 24	183 days	827 ft
Lancaster Fairfield Airport	Apr 26	Oct 13	169 days	869 ft
Lima Allen Co Airport	Apr 22	Oct 22	181 days	975 ft
Lima Wastewater Plant	Apr 24	Oct 24	182 days	850 ft
Logan	Apr 30	Oct 14	167 days	722 ft
London Fish Hatchery	Apr 24	Oct 18	175 days	1,120 ft
Lucasville	Apr 21	Oct 24	185 days	568 ft
Mansfield 5 W	Apr 30	Oct 15	167 days	1,350 ft
Mansfield Lahm Muni Airport	Apr 26	Oct 22	177 days	1,295 ft
Marietta Wastewater Plant	Apr 18	Oct 27	191 days	610 ft
Marion 2 N	Apr 25	Oct 20	178 days	965 ft
Marion Muni Airport	Apr 24	Oct 20	178 days	994 ft
Marysville	Apr 19	Oct 26	188 days	970 ft
Mc Connellsville Lake 7	Apr 27	Oct 21	176 days	760 ft
Milford	Apr 23	Oct 18	177 days	520 ft
Millersburg	May 2	Oct 14	164 days	819 ft
Millport 4 NE	May 2	Oct 13	165 days	1,170 ft
Montpelier	Apr 28	Oct 18	173 days	860 ft
Mosquito Creek Lake	Apr 30	Oct 23	176 days	910 ft
Napoleon	Apr 24	Oct 21	179 days	682 ft
Napoleon 1sw	Apr 23	Oct 24	183 days	670 ft
New Carlisle	Apr 24	Oct 17	173 days	874 ft
New Lexington 2 NW	Apr 30	Oct 17	168 days	877 ft
New Philadelphia	Apr 30	Oct 15	167 days	925 ft
New Philadelphia Field	Apr 26	Oct 21	176 days	895 ft
Newark Heath Airport	Apr 22	Oct 18	178 days	884 ft
Newark Wtr Wks	Apr 29	Oct 16	167 days	835 ft
Newport	Apr 23	Oct 26	185 days	676 ft
Norwalk Wastewater Plant	Apr 25	Oct 25	183 days	670 ft
Oberlin	Apr 27	Oct 22	178 days	816 ft
Painesville 4 NW	Apr 15	Nov 9	209 days	600 ft
Pandora	Apr 23	Oct 22	180 days	770 ft
Paulding	Apr 25	Oct 19	175 days	725 ft
Philo 3 SW	Apr 19	Oct 25	189 days	1,020 ft
Piqua Wastewater Plant	Apr 18	Oct 23	186 days	853 ft
Portsmouth-Sciotoville	Apr 17	Oct 25	191 days	540 ft
Ravenna 2 S	Apr 21	Oct 29	189 days	1,107 ft
Ripley Exp. Farm	Apr 29	Oct 11	162 days	880 ft
S Point	Apr 16	Oct 30	196 days	553 ft
Sandusky	Apr 10	Nov 5	209 days	584 ft
Sidney 1 S	Apr 27	Oct 20	175 days	940 ft
Springfield Water Plant	Apr 25	Oct 19	175 days	951 ft
Steubenville	Apr 29	Oct 20	175 days	992 ft
Stow 4 SE	Apr 30	Oct 21	173 days	1,060 ft
Tiffin	Apr 23	Oct 23	184 days	740 ft
Toledo Express Airport	Apr 22	Oct 24	188 days	669 ft
Toledo Metcalf Field	Apr 20	Oct 27	188 days	622 ft
Upper Sandusky	Apr 29	Oct 17	171 days	854 ft
Urbana Wastewater Plant	Apr 24	Oct 19	179 days	1,019 ft
Van Wert 1 S	Apr 21	Oct 26	187 days	790 ft
WFO Wilmington	Apr 17	Oct 22	187 days	1,053 ft
Warren 3 S	May 8	Oct 12	157 days	900 ft
Washington Court House	Apr 23	Oct 21	181 days	957 ft
Waterloo	Apr 30	Oct 15	167 days	625 ft
Wauseon Water Plant	Apr 29	Oct 16	170 days	750 ft
Waverly	Apr 21	Oct 22	182 days	572 ft
Westerville	Apr 22	Oct 24	183 days	802 ft
Wilmington 3 N	Apr 20	Oct 20	180 days	1,033 ft
Wooster 3 SSE	Apr 24	Oct 21	177 days	1,102 ft
Wooster Exp. Station	Apr 30	Oct 12	163 days	1,020 ft
Wooster Wayne Co Airport	Apr 29	Oct 14	167 days	1,137 ft
Xenia 6 SSE	Apr 18	Oct 24	188 days	997 ft
Youngstown Regional Airport	May 1	Oct 17	167 days	1,180 ft
Zanesville Muni Airport	Apr 26	Oct 19	177 days	880 ft

Sources

NOAA National Centers for Environmental Information, U.S. Climate Normals 1991–2020, annual/seasonal normals by station (version 1.0.1), file dated June 27, 2023; documentation.

Freeze dates are 30-year probabilities, not forecasts. Check your local forecast before planting tender plants.