| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 23°F | 45°F | 33°F | 1.2" |
| February | 28°F | 53°F | 39°F | 2.6" |
| March | 35°F | 60°F | 46°F | 4.0" |
| April | 42°F | 72°F | 56°F | 3.9" |
| May | 49°F | 74°F | 61°F | 2.2" |
| June | 59°F | 85°F | 71°F | 6.7" |
| July | 63°F | 84°F | 73°F | 5.9" |
| August | 62°F | 85°F | 73°F | 5.3" |
| September | 56°F | 84°F | 68°F | 3.0" |
| October | 44°F | 72°F | 57°F | 5.5" |
| November | 33°F | 61°F | 46°F | 1.2" |
| December | 30°F | 51°F | 40°F | 3.4" |
| Index | Waverly | Ohio | National |
| Air quality index | 14 | 40 | 42 |
| Pollution index | 1,306,310 | 4,472,386 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 356 |
| Days with moderate air quality | 9 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.010% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.290% |
| Mercury | 0.120% |
| City | Population | Air Quality Index | National Avg. |
| Piketon, OH | 2,139 | 14 | 72.0% |
| Beaver, OH | 513 | 14 | 72.0% |
| Richmond Dale, OH | 584 | 14 | 72.0% |
| Stockdale, OH | 0 | 14 | 72.0% |
| Rarden, OH | 144 | 14 | 72.0% |
| Waverly, OH | 4,186 | 14 | 72.0% |
| City | Population | Air Quality Index | National Avg. |
| Alexandria, AL | 4,185 | 43 | 14.0% |
| Comanche, TX | 4,187 | 33 | 34.0% |
| Sullivan City, TX | 4,187 | 42 | 16.0% |
| Greenfield, OH | 4,184 | 38 | 24.0% |
| Dawson, GA | 4,182 | 40 | 20.0% |
| Waverly, OH | 4,186 | 14 | 72.0% |
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