| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 31°F | 56°F | 42°F | 4.9" |
| February | 32°F | 59°F | 44°F | 4.0" |
| March | 40°F | 68°F | 53°F | 5.2" |
| April | 47°F | 78°F | 62°F | 5.1" |
| May | 55°F | 84°F | 69°F | 4.2" |
| June | 65°F | 91°F | 77°F | 3.3" |
| July | 68°F | 92°F | 79°F | 3.6" |
| August | 68°F | 92°F | 79°F | 3.8" |
| September | 61°F | 87°F | 73°F | 3.5" |
| October | 48°F | 77°F | 61°F | 4.0" |
| November | 37°F | 66°F | 50°F | 3.8" |
| December | 34°F | 58°F | 45°F | 6.5" |
| Index | Lyerly | Georgia | National |
| Air quality index | 33 | 41 | 50 |
| Pollution index | 2,295,500 | 3,237,553 | 5,066,862 |
| Measurement | Total |
| Days measured | 245 |
| Days with good air quality | 242 |
| Days with moderate air quality | 3 |
| Days w/ poor A.Q. for sensitive groups | |
| Days with unhealthy air quality |
| Pollutant | Total |
| Arsenic | 0.002% |
| Benzene | 0.030% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.010% |
| Mercury | 0.002% |
| City, State | Population | Air Quality Index | National Avg. |
| Summerville, GA | 4,408 | 33 | 34% |
| Trion, GA | 2,273 | 33 | 34% |
| Menlo, GA | 446 | 33 | 34% |
| Cedar Bluff, AL | 1,994 | 36 | 28% |
| Mentone, AL | 383 | 36 | 28% |
| Lyerly, GA | 443 | 33 | 34% |
| City, State | Population | Air Quality Index | National Avg. |
| Lanesboro, PA | 443 | 40 | 20% |
| Bear Creek, WI | 443 | 38 | 24% |
| Dalmatia, PA | 443 | 52 | 4% |
| Brethren, MI | 443 | 35 | 30% |
| Walnut Creek, AZ | 443 | 18 | 64% |
| Lyerly, GA | 443 | 33 | 34% |