| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 34°F | 48°F | 40°F | 9.1" |
| February | 34°F | 51°F | 41°F | 3.8" |
| March | 43°F | 66°F | 54°F | 6.1" |
| April | 49°F | 70°F | 59°F | 9.6" |
| May | 59°F | 83°F | 70°F | 1.7" |
| June | 68°F | 91°F | 79°F | 6.4" |
| July | 71°F | 90°F | 79°F | 8.1" |
| August | 74°F | 96°F | 84°F | 8.8" |
| September | 65°F | 87°F | 75°F | 4.9" |
| October | 52°F | 75°F | 62°F | 11.5" |
| November | 42°F | 63°F | 52°F | 6.2" |
| December | 32°F | 50°F | 40°F | 6.0" |
| Index | Cardwell | Missouri | National |
| Air quality index | 26 | 97 | 42 |
| Pollution index | 933,847 | 1,630,255 | 2,726,193 |
| Measurement | Total |
| Days measured | 360 |
| Days with good air quality | 341 |
| Days with moderate air quality | 19 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.002% |
| Benzene | 0.040% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.003% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Marmaduke, AR | 1,377 | 26 | 48.0% |
| Manila, AR | 3,340 | 26 | 48.0% |
| Monette, AR | 1,514 | 26 | 48.0% |
| Oak Grove Heights, AR | 1,237 | 26 | 48.0% |
| Hornersville, MO | 523 | 26 | 48.0% |
| Cardwell, MO | 830 | 26 | 48.0% |
| City | Population | Air Quality Index | National Avg. |
| Lakeville, CT | 830 | 37 | 26.0% |
| Shalimar, FL | 830 | 31 | 38.0% |
| Rhine, GA | 830 | 26 | 48.0% |
| Stafford, KS | 830 | 40 | 20.0% |
| Loudon, NH | 830 | 27 | 46.0% |
| Cardwell, MO | 830 | 26 | 48.0% |
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