| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 20°F | 37°F | 28°F | 2.1" |
| February | 21°F | 38°F | 29°F | 2.0" |
| March | 34°F | 54°F | 43°F | 3.0" |
| April | 44°F | 66°F | 55°F | 4.3" |
| May | 54°F | 74°F | 63°F | 3.7" |
| June | 64°F | 84°F | 74°F | 6.0" |
| July | 66°F | 86°F | 76°F | 4.5" |
| August | 66°F | 86°F | 75°F | 4.2" |
| September | 57°F | 79°F | 67°F | 4.3" |
| October | 45°F | 64°F | 54°F | 3.9" |
| November | 36°F | 54°F | 44°F | 2.7" |
| December | 23°F | 38°F | 29°F | 2.4" |
| Index | Kinderhook | Illinois | National |
| Air quality index | 41 | 41 | 50 |
| Pollution index | 2,458,180 | 3,347,295 | 5,066,862 |
| Measurement | Total |
| Days measured | 241 |
| Days with good air quality | 208 |
| Days with moderate air quality | 33 |
| 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 | 0.001% |
| Lead | 0.120% |
| Mercury | 0.330% |
| City, State | Population | Air Quality Index | National Avg. |
| Hull, IL | 478 | 41 | 18% |
| Ashburn, MO | 33 | 41 | 18% |
| Liberty, IL | 504 | 41 | 18% |
| Barry, IL | 1,362 | 41 | 18% |
| New Canton, IL | 356 | 41 | 18% |
| Kinderhook, IL | 315 | 41 | 18% |
| City, State | Population | Air Quality Index | National Avg. |
| Christoval, TX | 315 | 28 | 44% |
| Tununak, AK | 315 | 31 | 38% |
| Maytown, KY | 315 | 33 | 34% |
| Roxobel, NC | 315 | 36 | 28% |
| Lake Sherwood, WI | 315 | 35 | 30% |
| Kinderhook, IL | 315 | 41 | 18% |
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