| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 39°F | 64°F | 50°F | 2.9" |
| February | 42°F | 69°F | 54°F | 4.2" |
| March | 48°F | 75°F | 60°F | 3.4" |
| April | 54°F | 82°F | 68°F | 3.9" |
| May | 60°F | 87°F | 74°F | 3.0" |
| June | 69°F | 92°F | 79°F | 4.8" |
| July | 72°F | 94°F | 81°F | 4.4" |
| August | 72°F | 93°F | 81°F | 5.2" |
| September | 67°F | 89°F | 76°F | 4.5" |
| October | 55°F | 82°F | 67°F | 1.8" |
| November | 45°F | 74°F | 58°F | 1.9" |
| December | 43°F | 68°F | 54°F | 2.8" |
| Index | Milan | Georgia | National |
| Air quality index | 26 | 41 | 42 |
| Pollution index | 1,649,070 | 1,874,972 | 2,726,193 |
| Measurement | Total |
| Days measured | 121 |
| Days with good air quality | 107 |
| Days with moderate air quality | 14 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.050% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.020% |
| Mercury | 0.001% |
| City | Population | Air Quality Index | National Avg. |
| Chauncey, GA | 327 | 26 | 48.0% |
| Abbeville, GA | 2,725 | 26 | 48.0% |
| Scotland, GA | 439 | 26 | 48.0% |
| McRae-Helena, GA | 8,338 | 26 | 48.0% |
| Jacksonville, GA | 97 | 26 | 48.0% |
| Milan, GA | 785 | 26 | 48.0% |
| City | Population | Air Quality Index | National Avg. |
| Greenville, CA | 785 | 46 | 8.0% |
| Paragon Estates, CO | 785 | 47 | 6.0% |
| Attapulgus, GA | 785 | 40 | 20.0% |
| Ubly, MI | 785 | 26 | 48.0% |
| Grayhawk, MO | 785 | 54 | 8.0% |
| Milan, GA | 785 | 26 | 48.0% |
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