| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 25°F | 41°F | 33°F | 7.5" |
| February | 18°F | 37°F | 27°F | 3.4" |
| March | 32°F | 53°F | 41°F | 6.9" |
| April | 39°F | 65°F | 51°F | 5.4" |
| May | 47°F | 76°F | 61°F | 3.1" |
| June | 59°F | 85°F | 72°F | 5.0" |
| July | 61°F | 85°F | 73°F | 5.3" |
| August | 63°F | 88°F | 74°F | 6.5" |
| September | 52°F | 83°F | 66°F | 4.5" |
| October | 46°F | 69°F | 56°F | 3.0" |
| November | 33°F | 55°F | 44°F | 6.9" |
| December | 24°F | 40°F | 32°F | 4.3" |
| Index | Rushville | Ohio | National |
| Air quality index | 46 | 40 | 42 |
| Pollution index | 21,574,800 | 4,472,386 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 237 |
| Days with moderate air quality | 127 |
| Days w/ poor A.Q. for sensitive groups | 1 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.030% |
| Benzene | 0.230% |
| Carbon Tetrachloride | 0.100% |
| Lead | 0.190% |
| Mercury | 0.010% |
| City | Population | Air Quality Index | National Avg. |
| New Straitsville, OH | 673 | 25 | 50.0% |
| Bremen, OH | 1,507 | 25 | 50.0% |
| Rockbridge, OH | 49 | 25 | 50.0% |
| Junction City, OH | 818 | 25 | 50.0% |
| Somerset, OH | 1,840 | 25 | 50.0% |
| Rushville, OH | 382 | 46 | 8.0% |
| City | Population | Air Quality Index | National Avg. |
| Potter Valley, CA | 382 | 33 | 34.0% |
| Spreckels, CA | 382 | 37 | 26.0% |
| Rollinsville, CO | 382 | 47 | 6.0% |
| Eden, ID | 382 | 20 | 60.0% |
| Lomax, IL | 382 | 29 | 42.0% |
| Rushville, OH | 382 | 46 | 8.0% |