| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 34°F | 57°F | 44°F | 4.7" |
| February | 36°F | 60°F | 47°F | 4.5" |
| March | 44°F | 68°F | 55°F | 4.6" |
| April | 51°F | 76°F | 64°F | 4.6" |
| May | 60°F | 82°F | 71°F | 3.7" |
| June | 68°F | 89°F | 78°F | 4.3" |
| July | 71°F | 91°F | 80°F | 5.2" |
| August | 71°F | 90°F | 79°F | 5.3" |
| September | 65°F | 85°F | 74°F | 3.3" |
| October | 53°F | 76°F | 64°F | 3.4" |
| November | 42°F | 67°F | 54°F | 3.4" |
| December | 38°F | 59°F | 48°F | 6.2" |
| Index | Lake City | Georgia | National |
| Air quality index | 52 | 41 | 42 |
| Pollution index | 531,544 | 1,874,972 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 162 |
| Days with moderate air quality | 184 |
| Days w/ poor A.Q. for sensitive groups | 18 |
| Days with unhealthy air quality | 1 |
| Pollutant | Total |
| Arsenic | 0.020% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.060% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Candler-McAfee, GA | 24,419 | 52 | 4.0% |
| Forest Park, GA | 19,884 | 52 | 4.0% |
| North Decatur, GA | 15,833 | 52 | 4.0% |
| Union City, GA | 21,976 | 52 | 4.0% |
| Lithonia, GA | 2,488 | 52 | 4.0% |
| Lake City, GA | 2,794 | 52 | 4.0% |
| City | Population | Air Quality Index | National Avg. |
| Sublimity, OR | 2,794 | 32 | 36.0% |
| Mosheim, TN | 2,794 | 44 | 12.0% |
| Versailles, OH | 2,793 | 47 | 6.0% |
| Quail Ridge, FL | 2,795 | 43 | 14.0% |
| Tilton Northfield, NH | 2,795 | 31 | 38.0% |
| Lake City, GA | 2,794 | 52 | 4.0% |
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