| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 16°F | 29°F | 22°F | 3.0" |
| February | 15°F | 29°F | 22°F | 2.9" |
| March | 25°F | 41°F | 33°F | 2.8" |
| April | 35°F | 56°F | 44°F | 4.4" |
| May | 45°F | 66°F | 55°F | 4.4" |
| June | 57°F | 80°F | 68°F | 3.0" |
| July | 59°F | 82°F | 70°F | 4.6" |
| August | 60°F | 81°F | 70°F | 4.3" |
| September | 53°F | 75°F | 64°F | 4.1" |
| October | 44°F | 63°F | 53°F | 3.4" |
| November | 29°F | 45°F | 37°F | 3.1" |
| December | 15°F | 29°F | 22°F | 2.7" |
| Index | Sheboygan | Wisconsin | National |
| Air quality index | 38 | 69 | 42 |
| Pollution index | 3,923,560 | 2,842,418 | 2,726,193 |
| Measurement | Total |
| Days measured | 206 |
| Days with good air quality | 180 |
| Days with moderate air quality | 24 |
| Days w/ poor A.Q. for sensitive groups | 2 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.040% |
| Benzene | 0.050% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.070% |
| Mercury | 0.100% |
| City | Population | Air Quality Index | National Avg. |
| Cedar Grove, WI | 2,231 | 38 | 24.0% |
| Sheboygan Falls, WI | 7,898 | 38 | 24.0% |
| Adell, WI | 541 | 38 | 24.0% |
| Gibbsville, WI | 493 | 38 | 24.0% |
| Cleveland, WI | 1,753 | 38 | 24.0% |
| Sheboygan, WI | 48,153 | 38 | 24.0% |
| City | Population | Air Quality Index | National Avg. |
| Lincoln, CA | 48,150 | 52 | 4.0% |
| Newark, CA | 48,148 | 43 | 14.0% |
| Wauwatosa, WI | 48,143 | 44 | 12.0% |
| Victoriaville, QC | 48,167 | n/a | |
| La Mirada, CA | 48,260 | 72 | 44.0% |
| Sheboygan, WI | 48,153 | 38 | 24.0% |
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