| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 35°F | 61°F | 47°F | 4.1" |
| February | 36°F | 65°F | 49°F | 4.5" |
| March | 42°F | 73°F | 57°F | 3.4" |
| April | 49°F | 80°F | 64°F | 4.5" |
| May | 57°F | 86°F | 72°F | 2.5" |
| June | 67°F | 93°F | 79°F | 4.7" |
| July | 70°F | 94°F | 81°F | 5.2" |
| August | 70°F | 93°F | 80°F | 4.7" |
| September | 64°F | 89°F | 75°F | 3.6" |
| October | 51°F | 80°F | 64°F | 2.3" |
| November | 40°F | 71°F | 54°F | 3.2" |
| December | 38°F | 64°F | 50°F | 6.4" |
| Index | Roberta | Georgia | National |
| Air quality index | 38 | 41 | 50 |
| Pollution index | 760,415 | 3,237,553 | 5,066,862 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 278 |
| Days with moderate air quality | 84 |
| Days w/ poor A.Q. for sensitive groups | 3 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.010% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.010% |
| Mercury | 0.000% |
| City, State | Population | Air Quality Index | National Avg. |
| Yatesville, GA | 449 | 38 | 24% |
| Reynolds, GA | 1,388 | 38 | 24% |
| Culloden, GA | 267 | 38 | 24% |
| Fort Valley, GA | 8,975 | 38 | 24% |
| Salem, GA | 343 | 38 | 24% |
| Roberta, GA | 876 | 38 | 24% |
| City, State | Population | Air Quality Index | National Avg. |
| Chillicothe, TX | 876 | 26 | 48% |
| Sandia, TX | 876 | 30 | 40% |
| Waverly, MO | 876 | 47 | 6% |
| Colcord, OK | 876 | 36 | 28% |
| New Columbia, PA | 876 | 35 | 30% |
| Roberta, GA | 876 | 38 | 24% |
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