| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 21°F | 36°F | 28°F | 5.3" |
| February | 16°F | 33°F | 24°F | 1.7" |
| March | 28°F | 49°F | 37°F | 4.0" |
| April | 37°F | 59°F | 47°F | 4.8" |
| May | 47°F | 73°F | 59°F | 5.7" |
| June | 58°F | 83°F | 70°F | 2.2" |
| July | 60°F | 83°F | 71°F | 6.1" |
| August | 61°F | 83°F | 71°F | 4.3" |
| September | 51°F | 79°F | 64°F | 2.8" |
| October | 45°F | 66°F | 55°F | 4.0" |
| November | 32°F | 53°F | 42°F | 3.8" |
| December | 23°F | 37°F | 29°F | 3.3" |
| Index | Marshallville | Ohio | National |
| Air quality index | 43 | 40 | 42 |
| Pollution index | 11,945,900 | 4,472,386 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 278 |
| Days with moderate air quality | 84 |
| Days w/ poor A.Q. for sensitive groups | 3 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.270% |
| Benzene | 0.120% |
| Carbon Tetrachloride | 0.050% |
| Lead | 0.120% |
| Mercury | 0.030% |
| City | Population | Air Quality Index | National Avg. |
| Wadsworth, OH | 23,789 | 43 | 14.0% |
| Rittman, OH | 6,439 | 43 | 14.0% |
| Burbank, OH | 256 | 43 | 14.0% |
| Smithville, OH | 1,330 | 43 | 14.0% |
| Pigeon Creek, OH | 948 | 43 | 14.0% |
| Marshallville, OH | 896 | 43 | 14.0% |
| City | Population | Air Quality Index | National Avg. |
| Courtland, AL | 896 | 41 | 18.0% |
| Clay City, IL | 896 | 40 | 20.0% |
| Buras, LA | 896 | 45 | 10.0% |
| Cankton, LA | 896 | 41 | 18.0% |
| Cass Lake, MN | 896 | 29 | 42.0% |
| Marshallville, OH | 896 | 43 | 14.0% |
Here are the best places to live in Ohio
Check out the 10 safest cities in Ohio
These are the 10 most affordable cities in Ohio
10 Best cities in Ohio for employment