| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 20°F | 37°F | 28°F | 5.3" |
| February | 17°F | 36°F | 26°F | 3.3" |
| March | 23°F | 46°F | 34°F | 5.4" |
| April | 36°F | 62°F | 48°F | 9.9" |
| May | 44°F | 72°F | 58°F | 1.8" |
| June | 57°F | 83°F | 70°F | 4.8" |
| July | 60°F | 84°F | 72°F | 5.2" |
| August | 60°F | 83°F | 71°F | 4.6" |
| September | 51°F | 79°F | 65°F | 1.2" |
| October | 45°F | 67°F | 55°F | 16.9" |
| November | 31°F | 52°F | 42°F | 5.4" |
| December | 21°F | 38°F | 29°F | 4.7" |
| Index | Birchwood Lakes | Pennsylvania | National |
| Air quality index | 34 | 45 | 42 |
| Pollution index | 2,789,290 | 4,584,805 | 2,726,193 |
| Measurement | Total |
| Days measured | 349 |
| Days with good air quality | 340 |
| Days with moderate air quality | 9 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.002% |
| Benzene | 0.040% |
| Carbon Tetrachloride | 0.010% |
| Lead | 0.020% |
| Mercury | 0.030% |
| City | Population | Air Quality Index | National Avg. |
| Newton, NJ | 8,102 | 34 | 32.0% |
| Gold Key Lake, PA | 2,073 | 34 | 32.0% |
| Saw Creek, PA | 3,947 | 34 | 32.0% |
| Sunrise Lake, PA | 789 | 34 | 32.0% |
| Ross Corner, NJ | 216 | 34 | 32.0% |
| Birchwood Lakes, PA | 1,351 | 34 | 32.0% |
| City | Population | Air Quality Index | National Avg. |
| Bethany, IL | 1,351 | 44 | 12.0% |
| Wortham, TX | 1,351 | 41 | 18.0% |
| Homer, IL | 1,352 | 42 | 16.0% |
| Guthrie, KY | 1,350 | 40 | 20.0% |
| Minneota, MN | 1,350 | 32 | 36.0% |
| Birchwood Lakes, PA | 1,351 | 34 | 32.0% |