| 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. |
| Branchville, NJ | 1,054 | 34 | 32.0% |
| Port Jervis, NY | 8,541 | 34 | 32.0% |
| Pine Ridge, PA | 2,544 | 34 | 32.0% |
| Milford, PA | 1,390 | 34 | 32.0% |
| Crandon Lakes, NJ | 1,221 | 34 | 32.0% |
| Birchwood Lakes, PA | 1,321 | 34 | 32.0% |
| City | Population | Air Quality Index | National Avg. |
| Ecru, MS | 1,321 | 39 | 22.0% |
| Rosenhayn, NJ | 1,321 | 40 | 20.0% |
| Sulphur Springs, AR | 1,320 | 45 | 10.0% |
| Moody AFB, GA | 1,320 | 35 | 30.0% |
| Woodbine, GA | 1,322 | 36 | 28.0% |
| Birchwood Lakes, PA | 1,321 | 34 | 32.0% |
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