| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 24°F | 43°F | 33°F | 3.7" |
| February | 26°F | 46°F | 35°F | 3.3" |
| March | 36°F | 59°F | 47°F | 4.3" |
| April | 45°F | 70°F | 57°F | 5.9" |
| May | 54°F | 77°F | 65°F | 5.1" |
| June | 62°F | 85°F | 73°F | 4.7" |
| July | 66°F | 87°F | 76°F | 6.3" |
| August | 64°F | 87°F | 75°F | 2.8" |
| September | 57°F | 81°F | 69°F | 3.8" |
| October | 45°F | 70°F | 57°F | 4.0" |
| November | 35°F | 58°F | 45°F | 3.1" |
| December | 29°F | 48°F | 38°F | 4.7" |
| Index | Shelbyville | Kentucky | National |
| Air quality index | 49 | 45 | 42 |
| Pollution index | 10,162,700 | 1,369,131 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 195 |
| Days with moderate air quality | 166 |
| Days w/ poor A.Q. for sensitive groups | 4 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.010% |
| Benzene | 0.060% |
| Carbon Tetrachloride | 0.010% |
| Lead | 0.050% |
| Mercury | 0.140% |
| City | Population | Air Quality Index | National Avg. |
| La Grange, KY | 8,938 | 49 | 2.0% |
| Pleasureville, KY | 1,409 | 49 | 2.0% |
| Elk Creek, KY | 1,848 | 49 | 2.0% |
| Pewee Valley, KY | 1,553 | 49 | 2.0% |
| Simpsonville, KY | 2,868 | 49 | 2.0% |
| Shelbyville, KY | 16,244 | 49 | 2.0% |
| City | Population | Air Quality Index | National Avg. |
| Fort Carson, CO | 16,243 | 45 | 10.0% |
| Beckley, WV | 16,240 | 295 | 490.0% |
| Southchase, FL | 16,250 | 39 | 22.0% |
| Westchester, IL | 16,255 | 55 | 10.0% |
| Port Washington, NY | 16,232 | 51 | 2.0% |
| Shelbyville, KY | 16,244 | 49 | 2.0% |
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