| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 26°F | 44°F | 34°F | 5.7" |
| February | 27°F | 46°F | 36°F | 5.3" |
| March | 38°F | 59°F | 48°F | 7.5" |
| April | 47°F | 71°F | 58°F | 8.0" |
| May | 56°F | 77°F | 66°F | 8.8" |
| June | 64°F | 86°F | 74°F | 6.4" |
| July | 67°F | 87°F | 77°F | 8.3" |
| August | 66°F | 87°F | 76°F | 6.3" |
| September | 59°F | 81°F | 69°F | 8.4" |
| October | 47°F | 70°F | 58°F | 8.6" |
| November | 37°F | 58°F | 47°F | 5.9" |
| December | 30°F | 48°F | 38°F | 7.8" |
| Index | Elizabethtown | Kentucky | National |
| Air quality index | 39 | 45 | 42 |
| Pollution index | 708,337 | 1,369,131 | 2,726,193 |
| Measurement | Total |
| Days measured | 363 |
| Days with good air quality | 318 |
| Days with moderate air quality | 45 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.002% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Fort Knox, KY | 8,865 | 39 | 22.0% |
| Boston, KY | 138 | 39 | 22.0% |
| Hodgenville, KY | 3,221 | 39 | 22.0% |
| Radcliff, KY | 22,796 | 39 | 22.0% |
| Lebanon Junction, KY | 2,276 | 39 | 22.0% |
| Elizabethtown, KY | 30,179 | 39 | 22.0% |
| City | Population | Air Quality Index | National Avg. |
| North Royalton, OH | 30,179 | 50 | = 100 |
| Ballwin, MO | 30,177 | 54 | 8.0% |
| Lawrenceville, GA | 30,125 | 37 | 26.0% |
| Fountain, CO | 30,240 | 45 | 10.0% |
| San Lorenzo, CA | 30,117 | 40 | 20.0% |
| Elizabethtown, KY | 30,179 | 39 | 22.0% |
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