| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 16°F | 35°F | 24°F | 0.8" |
| February | 18°F | 37°F | 27°F | 1.3" |
| March | 32°F | 54°F | 41°F | 2.5" |
| April | 42°F | 65°F | 52°F | 4.9" |
| May | 52°F | 73°F | 62°F | 5.8" |
| June | 63°F | 83°F | 72°F | 6.1" |
| July | 66°F | 87°F | 76°F | 3.9" |
| August | 64°F | 84°F | 74°F | 6.4" |
| September | 56°F | 77°F | 66°F | 3.7" |
| October | 44°F | 65°F | 54°F | 3.3" |
| November | 33°F | 52°F | 41°F | 2.2" |
| December | 21°F | 38°F | 28°F | 2.0" |
| Index | Blythedale | Missouri | National |
| Air quality index | 43 | 97 | 42 |
| Pollution index | 1,176,900 | 1,630,255 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 283 |
| Days with moderate air quality | 82 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.002% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.010% |
| Mercury | 0.050% |
| City | Population | Air Quality Index | National Avg. |
| Lamoni, IA | 2,339 | 39 | 22.0% |
| Pleasanton, IA | 51 | 39 | 22.0% |
| Davis City, IA | 255 | 39 | 22.0% |
| Cainsville, MO | 203 | 43 | 14.0% |
| Bethany, MO | 3,135 | 43 | 14.0% |
| Blythedale, MO | 308 | 43 | 14.0% |
| City | Population | Air Quality Index | National Avg. |
| Boligee, AL | 308 | 35 | 30.0% |
| Willisville, AR | 308 | 35 | 30.0% |
| Coal Creek town, CO | 308 | 47 | 6.0% |
| Twin Lakes, IA | 308 | 37 | 26.0% |
| Alvan, IL | 308 | 42 | 16.0% |
| Blythedale, MO | 308 | 43 | 14.0% |
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