| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 37°F | 60°F | 47°F | 10.0" |
| February | 38°F | 64°F | 50°F | 9.7" |
| March | 46°F | 72°F | 58°F | 7.8" |
| April | 53°F | 79°F | 66°F | 7.6" |
| May | 60°F | 86°F | 72°F | 6.2" |
| June | 69°F | 92°F | 79°F | 10.6" |
| July | 71°F | 93°F | 81°F | 11.1" |
| August | 71°F | 92°F | 80°F | 9.4" |
| September | 65°F | 87°F | 75°F | 8.5" |
| October | 53°F | 79°F | 65°F | 5.4" |
| November | 42°F | 70°F | 54°F | 6.9" |
| December | 40°F | 64°F | 51°F | 11.6" |
| Index | Oglethorpe | Georgia | National |
| Air quality index | 39 | 41 | 42 |
| Pollution index | 333,601 | 1,874,972 | 2,726,193 |
| Measurement | Total |
| Days measured | 238 |
| Days with good air quality | 211 |
| Days with moderate air quality | 27 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Marshallville, GA | 1,284 | 38 | 24.0% |
| Ellaville, GA | 1,880 | 39 | 22.0% |
| Andersonville, GA | 142 | 39 | 22.0% |
| Ideal, GA | 495 | 39 | 22.0% |
| Byromville, GA | 529 | 39 | 22.0% |
| Oglethorpe, GA | 1,274 | 39 | 22.0% |
| City | Population | Air Quality Index | National Avg. |
| Ladoga, IN | 1,274 | 42 | 16.0% |
| Center Point, LA | 1,274 | 30 | 40.0% |
| Magnolia, NC | 1,274 | 40 | 20.0% |
| Delevan, NY | 1,274 | 39 | 22.0% |
| Brickerville, PA | 1,274 | 42 | 16.0% |
| Oglethorpe, GA | 1,274 | 39 | 22.0% |
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