| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 29°F | 51°F | 39°F | 4.8" |
| February | 31°F | 54°F | 42°F | 3.6" |
| March | 39°F | 65°F | 51°F | 4.5" |
| April | 47°F | 75°F | 61°F | 5.5" |
| May | 56°F | 81°F | 68°F | 3.6" |
| June | 65°F | 88°F | 76°F | 3.8" |
| July | 68°F | 90°F | 78°F | 5.6" |
| August | 67°F | 90°F | 78°F | 4.0" |
| September | 61°F | 84°F | 72°F | 4.4" |
| October | 48°F | 74°F | 60°F | 3.4" |
| November | 37°F | 63°F | 49°F | 4.1" |
| December | 32°F | 54°F | 42°F | 6.2" |
| Index | Philadelphia | Tennessee | National |
| Air quality index | 30 | 76 | 42 |
| Pollution index | 7,263,220 | 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 | 0.240% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.003% |
| Lead | 0.080% |
| Mercury | 0.300% |
| City | Population | Air Quality Index | National Avg. |
| Niota, TN | 837 | 30 | 40.0% |
| Sweetwater, TN | 5,894 | 30 | 40.0% |
| Vonore, TN | 1,931 | 30 | 40.0% |
| Madisonville, TN | 4,950 | 30 | 40.0% |
| Greenback, TN | 1,233 | 46 | 8.0% |
| Philadelphia, TN | 808 | 30 | 40.0% |
| City | Population | Air Quality Index | National Avg. |
| Hamel, IL | 808 | 54 | 8.0% |
| McLean, IL | 808 | 44 | 12.0% |
| Wheelwright, KY | 808 | 45 | 10.0% |
| Westphalia, MI | 808 | 36 | 28.0% |
| Pleasant Hill, NC | 808 | 45 | 10.0% |
| Philadelphia, TN | 808 | 30 | 40.0% |
Here are the best places to live in Tennessee
Check out the 10 safest cities in Tennessee
Top 10 best public schools in Philadelphia
Top 10 cities in Tennessee with the best education system