| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 25°F | 49°F | 35°F | 0.9" |
| February | 28°F | 52°F | 38°F | 1.3" |
| March | 40°F | 64°F | 51°F | 3.7" |
| April | 49°F | 72°F | 59°F | 4.6" |
| May | 57°F | 79°F | 67°F | 7.0" |
| June | 68°F | 89°F | 78°F | 5.4" |
| July | 71°F | 94°F | 82°F | 3.6" |
| August | 69°F | 93°F | 80°F | 4.6" |
| September | 61°F | 84°F | 71°F | 4.6" |
| October | 49°F | 74°F | 60°F | 3.4" |
| November | 39°F | 62°F | 49°F | 2.3" |
| December | 28°F | 49°F | 38°F | 1.7" |
| Index | Coffeyville | Kansas | National |
| Air quality index | 38 | 47 | 42 |
| Pollution index | 261,723 | 989,153 | 2,726,193 |
| Measurement | Total |
| Days measured | 363 |
| Days with good air quality | 289 |
| Days with moderate air quality | 73 |
| Days w/ poor A.Q. for sensitive groups | 1 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.003% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| South Coffeyville, OK | 851 | 38 | 24.0% |
| Liberty, KS | 81 | 38 | 24.0% |
| Lenapah, OK | 368 | 38 | 24.0% |
| Mound Valley, KS | 294 | 38 | 24.0% |
| Wann, OK | 150 | 38 | 24.0% |
| Coffeyville, KS | 9,687 | 38 | 24.0% |
| City | Population | Air Quality Index | National Avg. |
| Bloomingdale, TN | 9,688 | 45 | 10.0% |
| Ecorse, MI | 9,684 | 56 | 12.0% |
| Notre-Dame-des-Prairies, QC | 9,684 | n/a | |
| Edwards, CO | 9,690 | 47 | 6.0% |
| Pryor Creek, OK | 9,692 | 36 | 28.0% |
| Coffeyville, KS | 9,687 | 38 | 24.0% |