| 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 | Hopkins | Missouri | National |
| Air quality index | 43 | 97 | 42 |
| Pollution index | 543,130 | 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 | 0.003% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Clarinda, IA | 5,371 | 40 | 20.0% |
| Bedford, IA | 1,493 | 43 | 14.0% |
| New Market, IA | 483 | 43 | 14.0% |
| Quitman, MO | 10 | 43 | 14.0% |
| Pickering, MO | 170 | 43 | 14.0% |
| Hopkins, MO | 361 | 43 | 14.0% |
| City | Population | Air Quality Index | National Avg. |
| Poyen, AR | 361 | 38 | 24.0% |
| Sadieville, KY | 361 | 42 | 16.0% |
| Casar, NC | 361 | 36 | 28.0% |
| Weston, NE | 361 | 31 | 38.0% |
| Peavine, OK | 361 | 36 | 28.0% |
| Hopkins, MO | 361 | 43 | 14.0% |
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