| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 4°F | 21°F | 12°F | 3.3" |
| February | 6°F | 25°F | 15°F | 0.8" |
| March | 24°F | 41°F | 31°F | 7.8" |
| April | 36°F | 57°F | 45°F | 4.5" |
| May | 46°F | 70°F | 57°F | 8.4" |
| June | 56°F | 77°F | 66°F | 7.9" |
| July | 61°F | 83°F | 72°F | 8.0" |
| August | 57°F | 79°F | 68°F | 10.9" |
| September | 48°F | 71°F | 59°F | 5.3" |
| October | 38°F | 57°F | 46°F | 8.4" |
| November | 25°F | 42°F | 33°F | 2.2" |
| December | 10°F | 26°F | 18°F | 2.4" |
| Index | Kerkhoven | Minnesota | National |
| Air quality index | 32 | 35 | 42 |
| Pollution index | 179,440 | 1,854,519 | 2,726,193 |
| Measurement | Total |
| Days measured | 362 |
| Days with good air quality | 327 |
| Days with moderate air quality | 35 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.002% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Pennock, MN | 495 | 32 | 36.0% |
| Sunburg, MN | 67 | 32 | 36.0% |
| Willmar, MN | 20,156 | 32 | 36.0% |
| Raymond, MN | 796 | 32 | 36.0% |
| De Graff, MN | 102 | 32 | 36.0% |
| Kerkhoven, MN | 734 | 32 | 36.0% |
| City | Population | Air Quality Index | National Avg. |
| Tyronza, AR | 734 | 45 | 10.0% |
| Mendocino, CA | 734 | 33 | 34.0% |
| Onaga, KS | 734 | 32 | 36.0% |
| Chestertown, NY | 734 | 36 | 28.0% |
| Mountainhome, PA | 734 | 34 | 32.0% |
| Kerkhoven, MN | 734 | 32 | 36.0% |