| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 22°F | 39°F | 30°F | 3.1" |
| February | 23°F | 43°F | 32°F | 2.8" |
| March | 31°F | 53°F | 41°F | 4.3" |
| April | 42°F | 66°F | 54°F | 4.0" |
| May | 53°F | 76°F | 64°F | 4.5" |
| June | 62°F | 83°F | 73°F | 5.2" |
| July | 68°F | 88°F | 78°F | 5.2" |
| August | 65°F | 85°F | 74°F | 4.5" |
| September | 59°F | 80°F | 68°F | 5.7" |
| October | 47°F | 68°F | 57°F | 5.2" |
| November | 34°F | 55°F | 44°F | 2.4" |
| December | 29°F | 45°F | 37°F | 3.4" |
| Index | York Haven | Pennsylvania | National |
| Air quality index | 41 | 45 | 42 |
| Pollution index | 11,091,200 | 4,584,805 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 299 |
| Days with moderate air quality | 66 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.010% |
| Benzene | 0.140% |
| Carbon Tetrachloride | 0.030% |
| Lead | 0.310% |
| Mercury | 0.004% |
| City | Population | Air Quality Index | National Avg. |
| Elizabethtown, PA | 11,445 | 41 | 18.0% |
| Rheems, PA | 2,836 | 41 | 18.0% |
| New Salem CDP, PA | 446 | 41 | 18.0% |
| Spry, PA | 4,914 | 41 | 18.0% |
| West York, PA | 4,636 | 41 | 18.0% |
| York Haven, PA | 819 | 41 | 18.0% |
| City | Population | Air Quality Index | National Avg. |
| Rockport, AR | 819 | 38 | 24.0% |
| Milltown, IN | 819 | 49 | 2.0% |
| St. Mary of the Woods, IN | 819 | 45 | 10.0% |
| Spring Valley, KY | 819 | 49 | 2.0% |
| Aquasco, MD | 819 | 47 | 6.0% |
| York Haven, PA | 819 | 41 | 18.0% |
Here are the best places to live in Pennsylvania
Most Dangerous Cities In The US
These are the 10 cheapest cities in Pennsylvania
Check out the 10 safest cities in Pennsylvania