| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 29°F | 51°F | 38°F | 10.2" |
| February | 30°F | 53°F | 40°F | 5.8" |
| March | 38°F | 64°F | 49°F | 5.1" |
| April | 45°F | 73°F | 58°F | 7.5" |
| May | 53°F | 79°F | 65°F | 4.8" |
| June | 61°F | 85°F | 72°F | 8.0" |
| July | 64°F | 85°F | 73°F | 8.3" |
| August | 63°F | 85°F | 73°F | 7.8" |
| September | 57°F | 81°F | 67°F | 6.9" |
| October | 45°F | 72°F | 56°F | 9.0" |
| November | 35°F | 62°F | 47°F | 11.7" |
| December | 33°F | 55°F | 42°F | 12.6" |
| Index | Tellico Plains | Tennessee | National |
| Air quality index | 30 | 76 | 42 |
| Pollution index | 567,884 | 2,454,916 | 2,726,193 |
| Measurement | Total |
| Days measured | 357 |
| Days with good air quality | 316 |
| Days with moderate air quality | 41 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.010% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.001% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Niota, TN | 837 | 30 | 40.0% |
| Madisonville, TN | 4,950 | 30 | 40.0% |
| Englewood, TN | 1,513 | 30 | 40.0% |
| Etowah, TN | 3,505 | 30 | 40.0% |
| Tellico Plains, TN | 1,250 | 30 | 40.0% |
| City | Population | Air Quality Index | National Avg. |
| Altoona, AL | 1,250 | 43 | 14.0% |
| Upper Lake, CA | 1,250 | 33 | 34.0% |
| Westport, IN | 1,250 | 41 | 18.0% |
| Pandora, OH | 1,250 | 39 | 22.0% |
| Loyal, WI | 1,250 | 34 | 32.0% |
| Tellico Plains, TN | 1,250 | 30 | 40.0% |
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