| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 20°F | 39°F | 29°F | 2.9" |
| February | 20°F | 40°F | 30°F | 2.5" |
| March | 30°F | 53°F | 40°F | 3.3" |
| April | 40°F | 66°F | 53°F | 3.2" |
| May | 49°F | 75°F | 62°F | 4.1" |
| June | 59°F | 82°F | 70°F | 4.3" |
| July | 62°F | 85°F | 73°F | 4.5" |
| August | 61°F | 84°F | 72°F | 3.5" |
| September | 54°F | 78°F | 66°F | 3.0" |
| October | 44°F | 66°F | 54°F | 3.6" |
| November | 33°F | 55°F | 43°F | 2.6" |
| December | 26°F | 43°F | 34°F | 3.6" |
| Index | New Cumberland | West Virginia | National |
| Air quality index | 46 | 126 | 42 |
| Pollution index | 1,410,280 | 1,996,538 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 217 |
| Days with moderate air quality | 144 |
| Days w/ poor A.Q. for sensitive groups | 4 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.002% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.001% |
| Mercury | 0.004% |
| City | Population | Air Quality Index | National Avg. |
| Stratton, OH | 353 | 6 | 88.0% |
| Hookstown, PA | 127 | 6 | 88.0% |
| Ohioville, PA | 3,313 | 6 | 88.0% |
| La Croft, OH | 1,048 | 6 | 88.0% |
| Shippingport, PA | 199 | 6 | 88.0% |
| New Cumberland, WV | 1,089 | 46 | 8.0% |
| City | Population | Air Quality Index | National Avg. |
| Martin's Additions, MD | 1,089 | 47 | 6.0% |
| Buhl, MN | 1,089 | 35 | 30.0% |
| East Sparta, OH | 1,089 | 46 | 8.0% |
| Bowmanstown, PA | 1,089 | 42 | 16.0% |
| Pineland, TX | 1,089 | 45 | 10.0% |
| New Cumberland, WV | 1,089 | 46 | 8.0% |
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