| 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 | Russellville | Ohio | National |
| Air quality index | 43 | 40 | 42 |
| Pollution index | 114,060 | 4,472,386 | 2,726,193 |
| Measurement | Total |
| Days measured | 244 |
| Days with good air quality | 203 |
| Days with moderate air quality | 41 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.002% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Manchester, OH | 1,827 | 14 | 72.0% |
| West Union, OH | 3,192 | 14 | 72.0% |
| Bentonville, OH | 182 | 14 | 72.0% |
| Seaman, OH | 1,026 | 14 | 72.0% |
| Cherry Fork, OH | 62 | 14 | 72.0% |
| Russellville, OH | 731 | 43 | 14.0% |
| City | Population | Air Quality Index | National Avg. |
| Duncan, AZ | 731 | 37 | 26.0% |
| Frankford, DE | 731 | 36 | 28.0% |
| Poulan, GA | 731 | 40 | 20.0% |
| Findlay, IL | 731 | 44 | 12.0% |
| North Brentwood, MD | 731 | 47 | 6.0% |
| Russellville, OH | 731 | 43 | 14.0% |
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