| 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. |
| Taycheedah, WI | 666 | 36 | 28.0% |
| Reedsville, WI | 1,132 | 36 | 28.0% |
| Valders, WI | 884 | 36 | 28.0% |
| St. Nazianz, WI | 962 | 36 | 28.0% |
| St. Peter, WI | 1,390 | 36 | 28.0% |
| Chilton, WI | 3,974 | 37 | 26.0% |
| City | Population | Air Quality Index | National Avg. |
| Harbour Heights, FL | 3,973 | 36 | 28.0% |
| Austin, IN | 3,973 | 35 | 30.0% |
| Grand Bay, AL | 3,977 | 32 | 36.0% |
| Angels, CA | 3,970 | 39 | 22.0% |
| Metamora, IL | 3,970 | 41 | 18.0% |
| Chilton, WI | 3,974 | 37 | 26.0% |