| 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 | Withamsville | Ohio | National |
| Air quality index | 54 | 40 | 42 |
| Pollution index | 23,937,200 | 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 | 0.500% |
| Benzene | 0.180% |
| Carbon Tetrachloride | 0.110% |
| Lead | 0.250% |
| Mercury | 0.060% |
| City | Population | Air Quality Index | National Avg. |
| Pleasant Plain, OH | 197 | 43 | 14.0% |
| Moscow, OH | 94 | 54 | 8.0% |
| Newport, KY | 15,045 | 54 | 8.0% |
| Forestville, OH | 10,648 | 54 | 8.0% |
| Sherwood, OH | 3,277 | 54 | 8.0% |
| Withamsville, OH | 7,754 | 54 | 8.0% |
| City | Population | Air Quality Index | National Avg. |
| Creston, IA | 7,754 | 39 | 22.0% |
| Winnemucca, NV | 7,752 | 14 | 72.0% |
| Floris, VA | 7,752 | 47 | 6.0% |
| Pomona, NJ | 7,756 | 37 | 26.0% |
| Senatobia, MS | 7,759 | 45 | 10.0% |
| Withamsville, OH | 7,754 | 54 | 8.0% |
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