| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 22°F | 42°F | 30°F | 3.2" |
| February | 24°F | 45°F | 33°F | 4.1" |
| March | 37°F | 59°F | 46°F | 5.9" |
| April | 46°F | 68°F | 56°F | 9.3" |
| May | 55°F | 76°F | 65°F | 7.4" |
| June | 65°F | 86°F | 75°F | 9.6" |
| July | 69°F | 89°F | 78°F | 12.2" |
| August | 66°F | 88°F | 76°F | 9.2" |
| September | 58°F | 80°F | 68°F | 8.8" |
| October | 47°F | 69°F | 57°F | 8.6" |
| November | 36°F | 57°F | 46°F | 7.2" |
| December | 26°F | 44°F | 34°F | 6.6" |
| Index | Creighton | Missouri | National |
| Air quality index | 47 | 97 | 42 |
| Pollution index | 1,664,220 | 1,630,255 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 210 |
| Days with moderate air quality | 154 |
| Days w/ poor A.Q. for sensitive groups | 1 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.090% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.020% |
| Mercury | 0.040% |
| City | Population | Air Quality Index | National Avg. |
| La Due, MO | 83 | 47 | 6.0% |
| East Lynne, MO | 188 | 47 | 6.0% |
| La Tour, MO | 163 | 47 | 6.0% |
| Passaic, MO | 44 | 47 | 6.0% |
| Garden City, MO | 1,552 | 47 | 6.0% |
| Creighton, MO | 327 | 47 | 6.0% |
| City | Population | Air Quality Index | National Avg. |
| Cash, AR | 327 | 45 | 10.0% |
| Woodville, GA | 327 | 44 | 12.0% |
| Frederika, IA | 327 | 39 | 22.0% |
| Kiron, IA | 327 | 35 | 30.0% |
| Ute, IA | 327 | 35 | 30.0% |
| Creighton, MO | 327 | 47 | 6.0% |