| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 14°F | 28°F | 21°F | 2.7" |
| February | 14°F | 27°F | 21°F | 1.6" |
| March | 24°F | 42°F | 33°F | 2.3" |
| April | 36°F | 58°F | 46°F | 3.0" |
| May | 47°F | 69°F | 58°F | 3.1" |
| June | 59°F | 82°F | 70°F | 6.0" |
| July | 61°F | 83°F | 72°F | 5.7" |
| August | 62°F | 81°F | 71°F | 7.0" |
| September | 55°F | 76°F | 65°F | 5.3" |
| October | 46°F | 64°F | 54°F | 4.7" |
| November | 29°F | 45°F | 37°F | 3.8" |
| December | 15°F | 28°F | 22°F | 2.5" |
| Index | Chilton | Wisconsin | National |
| Air quality index | 37 | 69 | 42 |
| Pollution index | 1,300,960 | 2,842,418 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 304 |
| Days with moderate air quality | 59 |
| Days w/ poor A.Q. for sensitive groups | 2 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.001% |
| Mercury | 0.001% |
| City | Population | Air Quality Index | National Avg. |
| Reedsville, WI | 1,098 | 36 | 28.0% |
| Taycheedah, WI | 652 | 36 | 28.0% |
| St. Nazianz, WI | 942 | 36 | 28.0% |
| Valders, WI | 862 | 36 | 28.0% |
| Collins, WI | 209 | 36 | 28.0% |
| Chilton, WI | 3,829 | 37 | 26.0% |
| City | Population | Air Quality Index | National Avg. |
| Grand Bay, AL | 3,829 | 32 | 36.0% |
| New Hope, MS | 3,829 | 35 | 30.0% |
| Clyde, TX | 3,828 | 33 | 34.0% |
| Dana, NC | 3,830 | 44 | 12.0% |
| Saugerties, NY | 3,827 | 36 | 28.0% |
| Chilton, WI | 3,829 | 37 | 26.0% |
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