List of All Time Record High Temperatures in Ohio, United States
| Location | Temperature | Record Date |
| Akron | 101 °F (38°C) | July 7, 2012 |
| Athens | 104 °F (40°C) | July 9, 1988 |
| Bellefontaine | 106 °F (41°C) | July 22, 1934 |
| Bowling Green | 110 °F (43°C) | July 14, 1936 |
| Bucyrus | 111 °F (44°C) | August 7, 1918 |
| Cambridge | 102 °F (39°C) | July 16, 1988 |
| Celina | 104 °F (40°C) | June 28, 2012 |
| Centerburg | 100 °F (38°C) | July 14, 1954 |
|
| Chardon | 100 °F (38°C) | June 26, 1988 |
| Cincinnati | 105 °F (41°C) | July 30, 1999 |
| Circleville | 109 °F (43°C) | July 20, 1930 |
| Cleveland | 104 °F (40°C) | June 25, 1988 |
| Columbus | 103 °F (39°C) | June 25, 1988 |
| Columbus | 104 °F (40°C) | July 14, 1954 |
| Cortland | 99 °F (37°C) | July 25, 1965 |
|
| Coshocton | 106 °F (41°C) | September 3, 1953 |
| Dayton | 102 °F (39°C) | August 17, 1988 |
| Dayton | 106 °F (41°C) | July 14, 1936 |
| Dayton | 108 °F (42°C) | July 22, 1901 |
| Defiance | 111 °F (44°C) | July 25, 1934 |
| Eaton | 102 °F (39°C) | July 16, 1988 |
| Fairfield | 106 °F (41°C) | July 7, 2012 |
|
| Findlay | 104 °F (40°C) | June 25, 1988 |
| Findlay | 108 °F (42°C) | August 6, 1918 |
| Franklin | 104 °F (40°C) | July 5, 2002 |
| Fremont | 110 °F (43°C) | July 24, 1934 |
| Gallipolis | 113 °F (45°C) | July 21, 1934 |
| Garrettsville | 102 °F (39°C) | September 2, 1953 |
| Green | 101 °F (38°C) | July 16, 1988 |
|
| Greenville | 105 °F (41°C) | July 21, 1934 |
| Hannibal | 101 °F (38°C) | July 8, 2012 |
| Hicksville | 107 °F (42°C) | June 29, 2012 |
| Hillsboro | 105 °F (41°C) | September 20, 1895 |
| Howard | 102 °F (39°C) | July 17, 1988 |
| Jackson | 104 °F (40°C) | July 12, 1914 |
| Lima | 109 °F (43°C) | July 14, 1936 |
|
| Logan | 103 °F (39°C) | July 8, 2012 |
| London | 109 °F (43°C) | July 9, 1936 |
| Mansfield | 101 °F (38°C) | June 25, 1988 |
| Marietta | 103 °F (39°C) | July 8, 2012 |
| Marion | 105 °F (41°C) | July 14, 1936 |
| Marysville | 109 °F (43°C) | July 14, 1936 |
| Mentor | 98 °F (37°C) | June 25, 1988 |
| Millersburg | 104 °F (40°C) | July 20, 1930 |
| Montpelier | 109 °F (43°C) | July 24, 1934 |
| New Lexington | 103 °F (39°C) | July 14, 1954 |
| Newark | 106 °F (41°C) | July 14, 1936 |
| Newport | 104 °F (40°C) | July 17, 1988 |
| Norwalk | 108 °F (42°C) | July 24, 1934 |
| Ontario | 105 °F (41°C) | July 21, 1934 |
| Pandora | 103 °F (39°C) | June 25, 1988 |
| Paulding | 111 °F (44°C) | July 14, 1936 |
| Portsmouth | 107 °F (42°C) | July 28, 1930 |
| Ravenna | 102 °F (39°C) | July 18, 2012 |
| Sandusky | 105 °F (41°C) | July 14, 1936 |
| Sidney | 102 °F (39°C) | June 29, 2012 |
| South Point | 105 °F (41°C) | July 26, 2005 |
| Springfield | 100 °F (38°C) | August 21, 1983 |
| Steubenville | 102 °F (39°C) | July 16, 1988 |
| Swanton | 104 °F (40°C) | July 14, 1995 |
| Uhrichsville | 103 °F (39°C) | July 16, 1988 |
| Urbana | 110 °F (43°C) | July 14, 1936 |
| Van Wert | 110 °F (43°C) | July 14, 1936 |
| Vienna | 103 °F (39°C) | July 10, 1936 |
| Warren | 105 °F (41°C) | July 9, 1936 |
| Washington Court House | 107 °F (42°C) | July 21, 1934 |
| Wauseon | 109 °F (43°C) | August 7, 1918 |
| Waverly | 107 °F (42°C) | July 28, 1930 |
| Westerville | 102 °F (39°C) | July 14, 1954 |
| Wilmington | 101 °F (38°C) | July 14, 1954 |
| Wilmington | 101 °F (38°C) | July 14, 1954 |
| Wooster | 105 °F (41°C) | August 6, 1918 |
| Xenia | 108 °F (42°C) | July 14, 1936 |
| Zanesville | 103 °F (39°C) | July 16, 1988 |
