Average Rainfall for Ohio in September
The tables below give monthly averages for rainfall during September at cities, communities and other locations around Ohio.
Each place has a total for the amount of precipitation it usually receives this month. There is also a count of the number of days with wet weather, when precipitation amounts to 0.01 inches (0.25 millimetres) or more.
The rainfall totals are averages based on weather data collected from 1991 to 2020 for the US National Centers for Environmental Information.
You can jump to a separate table for Northern Ohio and Southern Ohio.
Northern Ohio
| Days | Place | Inches | Millimetres |
|---|---|---|---|
| 10 | Akron | 3.5 | 89 |
| 14 | Ashtabula | 3.9 | 98 |
| 11 | Chardon | 4.5 | 115 |
| 10 | Chippewa Lake | 3.4 | 86 |
| 10 | Cleveland | 3.9 | 100 |
| 9 | Findlay | 2.9 | 74 |
| 9 | Fremont | 3.2 | 82 |
| 9 | Lima | 3.2 | 81 |
| 10 | Mansfield | 3.4 | 85 |
| 10 | Marion | 3.3 | 85 |
| 10 | New Philadelphia | 3.4 | 87 |
| 9 | Norwalk | 3.6 | 90 |
| 8 | Ottawa National Wildlife Refuge | 3.0 | 76 |
| 9 | Painesville on the Lake | 3.9 | 99 |
| 10 | Steubenville | 3.8 | 97 |
| 9 | Tiffin | 3.3 | 84 |
| 9 | Toledo | 2.9 | 74 |
| 9 | Wooster | 3.6 | 91 |
| 10 | Youngstown | 3.8 | 98 |
Southern Ohio
| Days | Place | Inches | Millimetres |
|---|---|---|---|
| 9 | Athens | 3.2 | 81 |
| 7 | Chilo Lock Park | 2.8 | 71 |
| 8 | Cincinnati | 3.1 | 79 |
| 9 | Columbus | 3.1 | 80 |
| 8 | Dayton | 3.0 | 77 |
| 9 | Gallipolis | 3.8 | 95 |
| 8 | Greenville | 2.8 | 70 |
| 8 | Hannibal Lock & Dam | 3.7 | 94 |
| 10 | Marietta | 3.4 | 86 |
| 9 | McConnelsville Lock | 3.4 | 87 |
| 9 | Newark | 3.2 | 82 |
| 8 | Portsmouth | 3.3 | 84 |
| 9 | Springfield | 3.4 | 86 |
| 10 | Wilmington | 3.0 | 75 |
| 9 | Zanesville | 3.1 | 79 |
Reference
National Climatic Data Center. NOAA's 1981-2010 Climate Normals.