| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 33°F | 54°F | 43°F | 4.1" |
| February | 35°F | 57°F | 45°F | 4.0" |
| March | 43°F | 67°F | 54°F | 4.2" |
| April | 51°F | 75°F | 63°F | 4.1" |
| May | 59°F | 82°F | 70°F | 3.8" |
| June | 67°F | 90°F | 78°F | 3.6" |
| July | 70°F | 91°F | 79°F | 3.9" |
| August | 70°F | 90°F | 79°F | 4.7" |
| September | 64°F | 84°F | 73°F | 4.6" |
| October | 51°F | 75°F | 62°F | 3.4" |
| November | 40°F | 65°F | 52°F | 3.5" |
| December | 38°F | 58°F | 47°F | 5.1" |
| Index | Alpharetta | Georgia | National |
| Air quality index | 52 | 41 | 42 |
| Pollution index | 13,513,500 | 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 | 0.170% |
| Benzene | 0.180% |
| Carbon Tetrachloride | 0.040% |
| Lead | 0.080% |
| Mercury | 0.005% |
| City | Population | Air Quality Index | National Avg. |
| Sugar Hill, GA | 23,994 | 37 | 26.0% |
| Cumming, GA | 6,528 | 37 | 26.0% |
| Suwanee, GA | 20,444 | 37 | 26.0% |
| Lilburn, GA | 12,755 | 52 | 4.0% |
| Roswell, GA | 94,884 | 52 | 4.0% |
| Alpharetta, GA | 66,566 | 52 | 4.0% |
| City | Population | Air Quality Index | National Avg. |
| Lodi, CA | 66,562 | 45 | 10.0% |
| Port Coquitlam, BC | 66,485 | n/a | |
| Yuba City, CA | 66,660 | 44 | 12.0% |
| Redondo Beach, CA | 66,663 | 72 | 44.0% |
| Tamarac, FL | 66,432 | 41 | 18.0% |
| Alpharetta, GA | 66,566 | 52 | 4.0% |
Here are the best places to live in Georgia
These are the 10 cheapest cities in Georgia
Most Dangerous States In The US
Check out the 10 most dangerous cities in Georgia