| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 23°F | 36°F | 29°F | 5.8" |
| February | 17°F | 32°F | 25°F | 2.4" |
| March | 28°F | 47°F | 36°F | 3.5" |
| April | 38°F | 58°F | 48°F | 6.9" |
| May | 47°F | 71°F | 59°F | 2.1" |
| June | 60°F | 83°F | 71°F | 4.1" |
| July | 61°F | 84°F | 72°F | 6.2" |
| August | 62°F | 83°F | 72°F | 13.1" |
| September | 55°F | 78°F | 66°F | 4.6" |
| October | 48°F | 66°F | 56°F | 4.3" |
| November | 33°F | 52°F | 43°F | 4.5" |
| December | 23°F | 36°F | 29°F | 3.6" |
| Index | Sheffield | Ohio | National |
| Air quality index | 50 | 40 | 42 |
| Pollution index | 9,912,140 | 4,472,386 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 185 |
| Days with moderate air quality | 173 |
| Days w/ poor A.Q. for sensitive groups | 7 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.120% |
| Benzene | 0.080% |
| Carbon Tetrachloride | 0.020% |
| Lead | 0.440% |
| Mercury | 0.260% |
| City | Population | Air Quality Index | National Avg. |
| Brunswick, OH | 34,902 | 50 | = 100 |
| Elyria, OH | 53,844 | 50 | = 100 |
| Bay Village, OH | 15,258 | 50 | = 100 |
| Strongsville, OH | 44,675 | 50 | = 100 |
| Westlake, OH | 32,154 | 50 | = 100 |
| Sheffield, OH | 4,299 | 50 | = 100 |
| City | Population | Air Quality Index | National Avg. |
| Beaver, PA | 4,299 | 6 | 88.0% |
| Jamestown, NC | 4,298 | 43 | 14.0% |
| Hallsville, TX | 4,297 | 37 | 26.0% |
| Sparta, IL | 4,302 | 54 | 8.0% |
| Golden Triangle, NJ | 4,302 | 51 | 2.0% |
| Sheffield, OH | 4,299 | 50 | = 100 |
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