| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 31°F | 49°F | 39°F | 5.9" |
| February | 31°F | 51°F | 40°F | 3.7" |
| March | 40°F | 63°F | 50°F | 4.7" |
| April | 48°F | 73°F | 60°F | 5.8" |
| May | 56°F | 79°F | 67°F | 4.7" |
| June | 65°F | 87°F | 75°F | 3.2" |
| July | 68°F | 88°F | 77°F | 6.2" |
| August | 69°F | 90°F | 78°F | 3.3" |
| September | 62°F | 83°F | 71°F | 3.9" |
| October | 49°F | 71°F | 59°F | 4.3" |
| November | 38°F | 61°F | 48°F | 4.2" |
| December | 33°F | 51°F | 41°F | 6.3" |
| Index | Elgin | Tennessee | National |
| Air quality index | 53 | 76 | 42 |
| Pollution index | 325,196 | 2,454,916 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 148 |
| Days with moderate air quality | 216 |
| Days w/ poor A.Q. for sensitive groups | 1 |
| Days with unhealthy air quality |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.002% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Oneida, TN | 3,719 | 40 | 20.0% |
| Helenwood, TN | 400 | 53 | 6.0% |
| Sunbright, TN | 601 | 53 | 6.0% |
| Huntsville, TN | 1,475 | 53 | 6.0% |
| Robbins, TN | 93 | 53 | 6.0% |
| Elgin, TN | 245 | 53 | 6.0% |
| City | Population | Air Quality Index | National Avg. |
| Knobel, AR | 245 | 26 | 48.0% |
| Kite, GA | 245 | 47 | 6.0% |
| Montour, IA | 245 | 39 | 22.0% |
| Otwell, IN | 245 | 6 | 88.0% |
| Mize, MS | 245 | 35 | 30.0% |
| Elgin, TN | 245 | 53 | 6.0% |
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