| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 24°F | 42°F | 32°F | 2.7" |
| February | 24°F | 44°F | 34°F | 2.6" |
| March | 34°F | 57°F | 44°F | 4.1" |
| April | 43°F | 69°F | 56°F | 4.9" |
| May | 52°F | 77°F | 64°F | 3.9" |
| June | 61°F | 85°F | 73°F | 4.5" |
| July | 65°F | 87°F | 75°F | 4.7" |
| August | 63°F | 87°F | 75°F | 2.7" |
| September | 56°F | 81°F | 67°F | 3.3" |
| October | 45°F | 69°F | 56°F | 3.6" |
| November | 33°F | 57°F | 44°F | 2.9" |
| December | 28°F | 46°F | 36°F | 3.7" |
| Index | Dillonvale | Ohio | National |
| Air quality index | 54 | 40 | 42 |
| Pollution index | 7,300,490 | 4,472,386 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 139 |
| Days with moderate air quality | 206 |
| Days w/ poor A.Q. for sensitive groups | 20 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.520% |
| Benzene | 0.070% |
| Carbon Tetrachloride | 0.040% |
| Lead | 0.240% |
| Mercury | 0.050% |
| City | Population | Air Quality Index | National Avg. |
| Lebanon, OH | 20,781 | 43 | 14.0% |
| Hamilton, OH | 62,162 | 54 | 8.0% |
| Evendale, OH | 2,709 | 54 | 8.0% |
| Northbrook, OH | 10,744 | 54 | 8.0% |
| Goshen, OH | 652 | 54 | 8.0% |
| Dillonvale, OH | 3,411 | 54 | 8.0% |
| City | Population | Air Quality Index | National Avg. |
| Smithville-Sanders, IN | 3,411 | 42 | 16.0% |
| Three Lakes, WA | 3,411 | 45 | 10.0% |
| Eagle Grove, IA | 3,410 | 37 | 26.0% |
| Alma, GA | 3,409 | 26 | 48.0% |
| Minden, NV | 3,409 | 13 | 74.0% |
| Dillonvale, OH | 3,411 | 54 | 8.0% |
Here are the best places to live in Ohio
Check out the 10 most dangerous cities in Ohio
These are the largest cities in Ohio
These are the 10 cheapest cities in Ohio