| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 32°F | 56°F | 43°F | 3.8" |
| February | 34°F | 59°F | 45°F | 4.6" |
| March | 42°F | 69°F | 54°F | 4.4" |
| April | 49°F | 76°F | 62°F | 3.9" |
| May | 56°F | 82°F | 69°F | 3.2" |
| June | 65°F | 90°F | 77°F | 3.1" |
| July | 68°F | 91°F | 78°F | 4.5" |
| August | 68°F | 90°F | 78°F | 4.2" |
| September | 62°F | 85°F | 72°F | 3.5" |
| October | 49°F | 76°F | 61°F | 3.4" |
| November | 38°F | 66°F | 51°F | 3.5" |
| December | 37°F | 60°F | 47°F | 6.1" |
| Index | Williamson | Georgia | National |
| Air quality index | 52 | 41 | 42 |
| Pollution index | 448,589 | 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 | 0.010% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.002% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Orchard Hill, GA | 242 | 38 | 24.0% |
| Aldora, GA | 37 | 38 | 24.0% |
| Zebulon, GA | 1,427 | 38 | 24.0% |
| Barnesville, GA | 6,673 | 38 | 24.0% |
| Meansville, GA | 158 | 38 | 24.0% |
| Williamson, GA | 593 | 52 | 4.0% |
| City | Population | Air Quality Index | National Avg. |
| Napakiak, AK | 593 | 31 | 38.0% |
| Vail, IA | 593 | 35 | 30.0% |
| Hillman, MI | 593 | 36 | 28.0% |
| Havre North, MT | 593 | 21 | 58.0% |
| Canal Lewisville, OH | 593 | 41 | 18.0% |
| Williamson, GA | 593 | 52 | 4.0% |
Here are the best places to live in Georgia
These are the 10 cheapest cities in Georgia
Safest Cities In The US
Check out the 10 most dangerous cities in Georgia