| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 33°F | 52°F | 42°F | 5.0" |
| February | 35°F | 55°F | 44°F | 4.0" |
| March | 43°F | 65°F | 54°F | 4.4" |
| April | 51°F | 74°F | 62°F | 4.5" |
| May | 59°F | 80°F | 69°F | 4.2" |
| June | 67°F | 88°F | 77°F | 3.6" |
| July | 70°F | 89°F | 78°F | 4.2" |
| August | 70°F | 88°F | 78°F | 5.2" |
| September | 64°F | 82°F | 72°F | 4.1" |
| October | 52°F | 73°F | 62°F | 4.5" |
| November | 42°F | 63°F | 52°F | 3.8" |
| December | 38°F | 56°F | 46°F | 5.8" |
| Index | Gainesville | Georgia | National |
| Air quality index | 37 | 41 | 42 |
| Pollution index | 496,082 | 1,874,972 | 2,726,193 |
| Measurement | Total |
| Days measured | 340 |
| Days with good air quality | 259 |
| Days with moderate air quality | 81 |
| 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 | 0.002% |
| Lead | 0.001% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Braselton, GA | 12,178 | 37 | 26.0% |
| Talmo, GA | 242 | 37 | 26.0% |
| Gillsville, GA | 317 | 37 | 26.0% |
| Buford, GA | 16,003 | 37 | 26.0% |
| Pendergrass, GA | 840 | 37 | 26.0% |
| Gainesville, GA | 41,464 | 37 | 26.0% |
| City | Population | Air Quality Index | National Avg. |
| Coppell, TX | 41,494 | 51 | 2.0% |
| Linton Hall, VA | 41,426 | 47 | 6.0% |
| Shakopee, MN | 41,423 | 46 | 8.0% |
| Woodlawn, MD | 41,505 | 46 | 8.0% |
| Grove City, OH | 41,394 | 46 | 8.0% |
| Gainesville, GA | 41,464 | 37 | 26.0% |
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