Spring Thaw Dates
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Spring Thaw Dates |
When does the last freeze of the season normally occur in your part of Ohio?
The following reference table will give an idea as to when the last freezing temperatures might occur... based on several years of climatological data... at each of the listed locations.
In the table that follows there are three columns which give the average date of the last 32 degree temperature in the spring... the date on which chances are one in ten that the last freeze will have occurred... and the date when the chances are nine in ten that the last freeze will have occurred.
location ave date last last 32f in one last 32f in nine
32f in spring year out of ten years out of ten
bowling green may 2 apr 18 may 16 defiance may 4 apr 19 may 18 findlay apr 26 apr 14 may 9 lima may 4 apr 20 may 19 montpelier may 5 apr 21 may 19 toledo apr 27 apr 14 may 10
bucyrus may 5 apr 21 may 19 elyria may 4 apr 19 may 18 norwalk may 3 apr 20 may 17 oberlin may 13 apr 27 may 30 put-in-bay apr 14 apr 4 apr 24 sandusky apr 16 apr 4 apr 29 tiffin apr 28 apr 17 may 10
ashtabula may 2 apr 17 may 17 chardon may 11 apr 25 may 27 cleveland apr 21 apr 2 may 10 hiram apr 30 apr 15 may 14 painesville apr 26 apr 11 may 11 warren may 14 apr 28 may 30 youngstown arpt may 6 apr 19 may 24
bellefontaine may 3 apr 17 may 19 greenville may 3 apr 18 may 18 kenton may 4 apr 20 may 18 sidney may 5 apr 17 may 24 springfield apr 23 apr 8 may 9 urbana may 3 apr 18 may 18
circleville apr 30 apr 15 may 15 columbus apr 16 apr 3 apr 29 delaware may 3 apr 18 may 18 lancaster may 3 apr 20 may 16 london may 2 apr 17 may 17 marion apr 29 apr 13 may 15 marysville may 2 apr 17 may 17 newark may 3 apr 18 may 19 washington c.h. apr 26 apr 11 may 10
ashland may 4 apr 17 may 21 coshocton may 6 apr 18 may 23 fredericktown may 7 apr 24 may 19 mansfield may 9 apr 25 may 23 millersburg may 8 apr 23 may 23 plymouth may 6 apr 22 may 21 wooster may 8 apr 22 may 25
akron-canton arpt may 3 apr 15 may 21 cadiz apr 28 apr 13 may 14 canfield may 14 apr 28 may 30 steubenville apr 30 apr 15 may 16
cincinnati apr 18 apr 3 may 3 dayton apr 19 apr 5 may 3 hamilton-fairfield apr 28 apr 14 may 11 hillsboro apr 23 apr 9 may 7 milford apr 30 apr 17 may 13 wilmington may 2 apr 16 may 18 xenia apr 29 apr 15 may 12
chillicothe apr 22 apr 9 may 5 gallipolis apr 30 apr 17 may 12 ironton apr 21 apr 6 may 6 jackson may 8 apr 19 may 26 portsmouth apr 14 apr 1 apr 26 waverly may 5 apr 18 may 22
athens may 16 may 1 may 31 barnesville may 12 apr 26 may 29 caldwell may 6 apr 19 may 23 cambridge may 7 apr 20 may 23 marietta apr 27 apr 13 may 12 mcconnelsville may 5 apr 19 may 21 new lexington may 7 apr 22 may 22 zanesville may 6 apr 22 may 21
while the table above concerns itself only with the last recorded freezing temperature in spring... we must add that frost can occur any time national weather service temperatures of 36 degrees or less are recorded. the reason for this apparent anomaly is that official temperature readings are taken at an elevation of five feet above ground... but the temperature at ground level may be colder.
on typical spring nights when frost occurs... the temperature at the five foot level may read 36 degrees while the temperature at ground level is actually the 32 degrees needed to form frost.