| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 25°F | 44°F | 34°F | 4.2" |
| February | 25°F | 47°F | 35°F | 3.4" |
| March | 35°F | 59°F | 46°F | 4.1" |
| April | 45°F | 70°F | 57°F | 5.7" |
| May | 53°F | 77°F | 65°F | 5.0" |
| June | 62°F | 86°F | 74°F | 5.2" |
| July | 65°F | 88°F | 76°F | 6.1" |
| August | 64°F | 88°F | 76°F | 4.7" |
| September | 57°F | 82°F | 69°F | 3.9" |
| October | 46°F | 71°F | 57°F | 4.0" |
| November | 35°F | 59°F | 46°F | 3.0" |
| December | 29°F | 48°F | 38°F | 5.2" |
| Index | Millersburg | Kentucky | National |
| Air quality index | 42 | 45 | 42 |
| Pollution index | 114,060 | 1,369,131 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 303 |
| Days with moderate air quality | 62 |
| 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. |
| Berry, KY | 181 | 42 | 16.0% |
| North Middletown, KY | 722 | 42 | 16.0% |
| Carlisle, KY | 2,443 | 42 | 16.0% |
| Paris, KY | 9,776 | 42 | 16.0% |
| Cynthiana, KY | 6,270 | 42 | 16.0% |
| Millersburg, KY | 798 | 42 | 16.0% |
| City | Population | Air Quality Index | National Avg. |
| Teec Nos Pos, AZ | 798 | 49 | 2.0% |
| Ossian, IA | 798 | 39 | 22.0% |
| Dulac, LA | 798 | 41 | 18.0% |
| Burr Oak, MI | 798 | 38 | 24.0% |
| Bella Villa, MO | 798 | 54 | 8.0% |
| Millersburg, KY | 798 | 42 | 16.0% |
Here are the best places to live in Kentucky
10 Best cities in Kentucky for employment
Top 10 cities in Kentucky with the best education system
Check out the 10 safest cities in Kentucky