| 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 | Clinton | Pennsylvania | National |
| Air quality index | 46 | 45 | 42 |
| Pollution index | 1,675,060 | 4,584,805 | 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 | 0.001% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.001% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Industry, PA | 1,637 | 6 | 88.0% |
| East Rochester, PA | 539 | 6 | 88.0% |
| Rochester, PA | 3,468 | 6 | 88.0% |
| Shippingport, PA | 199 | 6 | 88.0% |
| Freedom, PA | 1,677 | 6 | 88.0% |
| Clinton, PA | 1,049 | 46 | 8.0% |
| City | Population | Air Quality Index | National Avg. |
| Skyline, AL | 1,049 | 44 | 12.0% |
| Herald, CA | 1,049 | 45 | 10.0% |
| Saybrook Manor, CT | 1,049 | 37 | 26.0% |
| Canon, GA | 1,049 | 41 | 18.0% |
| Onset, MA | 1,049 | 36 | 28.0% |
| Clinton, PA | 1,049 | 46 | 8.0% |
Here are the best places to live in Pennsylvania
See the best places to live in Clinton
These are the 10 cheapest cities in Pennsylvania
These are the largest cities in Pennsylvania