| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 14°F | 30°F | 22°F | 2.3" |
| February | 14°F | 31°F | 23°F | 2.8" |
| March | 26°F | 45°F | 35°F | 3.7" |
| April | 36°F | 58°F | 46°F | 5.9" |
| May | 46°F | 71°F | 58°F | 4.8" |
| June | 56°F | 79°F | 67°F | 7.8" |
| July | 59°F | 82°F | 70°F | 11.4" |
| August | 57°F | 81°F | 68°F | 5.4" |
| September | 50°F | 74°F | 61°F | 7.1" |
| October | 40°F | 61°F | 50°F | 5.8" |
| November | 29°F | 48°F | 38°F | 5.2" |
| December | 19°F | 34°F | 27°F | 3.3" |
| Index | Waterford | Wisconsin | National |
| Air quality index | 39 | 69 | 42 |
| Pollution index | 3,606,380 | 2,842,418 | 2,726,193 |
| Measurement | Total |
| Days measured | 203 |
| Days with good air quality | 174 |
| Days with moderate air quality | 28 |
| Days w/ poor A.Q. for sensitive groups | 1 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.003% |
| Benzene | 0.050% |
| Carbon Tetrachloride | 0.005% |
| Lead | 0.001% |
| Mercury | 0.004% |
| City | Population | Air Quality Index | National Avg. |
| North Prairie, WI | 2,542 | 37 | 26.0% |
| East Troy, WI | 4,310 | 37 | 26.0% |
| Lake Geneva, WI | 7,872 | 37 | 26.0% |
| Potter Lake, WI | 936 | 37 | 26.0% |
| Lake Ivanhoe, WI | 398 | 37 | 26.0% |
| Waterford, WI | 5,520 | 39 | 22.0% |
| City | Population | Air Quality Index | National Avg. |
| Waterville, OH | 5,519 | 40 | 20.0% |
| Nashville, NC | 5,521 | 36 | 28.0% |
| Ulysses, KS | 5,518 | 15 | 70.0% |
| Caruthersville, MO | 5,518 | 26 | 48.0% |
| Connell, WA | 5,518 | 37 | 26.0% |
| Waterford, WI | 5,520 | 39 | 22.0% |
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