| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 29°F | 52°F | 39°F | 4.2" |
| February | 31°F | 54°F | 42°F | 3.4" |
| March | 39°F | 65°F | 52°F | 4.1" |
| April | 49°F | 75°F | 62°F | 5.6" |
| May | 56°F | 82°F | 69°F | 5.1" |
| June | 66°F | 90°F | 78°F | 3.9" |
| July | 69°F | 92°F | 80°F | 5.0" |
| August | 69°F | 92°F | 79°F | 4.5" |
| September | 61°F | 86°F | 73°F | 4.0" |
| October | 49°F | 75°F | 61°F | 4.0" |
| November | 38°F | 64°F | 50°F | 3.8" |
| December | 33°F | 54°F | 43°F | 5.1" |
| Index | Thompson's Station | Tennessee | National |
| Air quality index | 31 | 76 | 42 |
| Pollution index | 1,219,980 | 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 | 0.000% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Spring Hill, TN | 42,910 | 31 | 38.0% |
| Columbia, TN | 40,814 | 31 | 38.0% |
| Chapel Hill, TN | 1,543 | 31 | 38.0% |
| Eagleville, TN | 979 | 31 | 38.0% |
| Fairview, TN | 9,268 | 45 | 10.0% |
| Thompson's Station, TN | 6,256 | 31 | 38.0% |
| City | Population | Air Quality Index | National Avg. |
| Theodore, AL | 6,256 | 42 | 16.0% |
| Willows, CA | 6,255 | 46 | 8.0% |
| Stewartville, MN | 6,255 | 36 | 28.0% |
| Mattydale, NY | 6,255 | 37 | 26.0% |
| Manchester, WA | 6,249 | 18 | 64.0% |
| Thompson's Station, TN | 6,256 | 31 | 38.0% |