| 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 | Haralson | Georgia | National |
| Air quality index | 52 | 41 | 42 |
| Pollution index | 4,626,350 | 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 | 0.040% |
| Benzene | 0.070% |
| Carbon Tetrachloride | 0.020% |
| Lead | 0.020% |
| Mercury | 0.002% |
| City | Population | Air Quality Index | National Avg. |
| Zebulon, GA | 1,427 | 38 | 24.0% |
| Meansville, GA | 158 | 38 | 24.0% |
| Gay, GA | 122 | 42 | 16.0% |
| Greenville, GA | 1,002 | 42 | 16.0% |
| Lone Oak, GA | 77 | 42 | 16.0% |
| Haralson, GA | 203 | 52 | 4.0% |
| City | Population | Air Quality Index | National Avg. |
| Gakona, AK | 203 | 31 | 38.0% |
| La Vina, CA | 203 | 50 | = 100 |
| Glen Ridge, FL | 203 | 36 | 28.0% |
| Highland Park, FL | 203 | 36 | 28.0% |
| Whitfield CDP (Santa Rosa County), FL | 203 | 38 | 24.0% |
| Haralson, GA | 203 | 52 | 4.0% |
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