| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 36°F | 52°F | 43°F | 7.2" |
| February | 32°F | 52°F | 42°F | 3.3" |
| March | 43°F | 68°F | 55°F | 6.3" |
| April | 48°F | 71°F | 60°F | 4.8" |
| May | 56°F | 83°F | 71°F | 4.4" |
| June | 67°F | 91°F | 79°F | 3.3" |
| July | 71°F | 92°F | 81°F | 2.2" |
| August | 73°F | 99°F | 87°F | 1.6" |
| September | 64°F | 91°F | 78°F | 4.0" |
| October | 52°F | 77°F | 65°F | 9.6" |
| November | 41°F | 65°F | 53°F | 6.3" |
| December | 34°F | 53°F | 43°F | 6.0" |
| Index | Columbia | Tennessee | National |
| Air quality index | 31 | 76 | 42 |
| Pollution index | 3,553,420 | 2,454,916 | 2,726,193 |
| Measurement | Total |
| Days measured | 116 |
| Days with good air quality | 99 |
| Days with moderate air quality | 17 |
| Days w/ poor A.Q. for sensitive groups | |
| Days with unhealthy air quality |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.030% |
| Carbon Tetrachloride | 0.004% |
| Lead | 0.010% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Summertown, TN | 521 | 27 | 46.0% |
| Spring Hill, TN | 41,797 | 31 | 38.0% |
| Mount Pleasant, TN | 4,899 | 31 | 38.0% |
| Thompson's Station, TN | 6,116 | 31 | 38.0% |
| Lewisburg, TN | 12,150 | 31 | 38.0% |
| Columbia, TN | 39,515 | 31 | 38.0% |
| City | Population | Air Quality Index | National Avg. |
| Lake Oswego, OR | 39,476 | 38 | 24.0% |
| Carol Stream, IL | 39,447 | 55 | 10.0% |
| Los Banos, CA | 39,443 | 48 | 4.0% |
| Plant City, FL | 39,437 | 36 | 28.0% |
| Meadow Woods, FL | 39,424 | 39 | 22.0% |
| Columbia, TN | 39,515 | 31 | 38.0% |
Here are the best places to live in Tennessee
These are the largest cities in Tennessee
Check out the 10 most dangerous cities in Tennessee
These are the 10 cheapest cities in Tennessee