| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 19°F | 38°F | 28°F | 2.6" |
| February | 19°F | 40°F | 29°F | 2.6" |
| March | 28°F | 50°F | 38°F | 3.1" |
| April | 38°F | 64°F | 51°F | 3.3" |
| May | 48°F | 74°F | 60°F | 3.1" |
| June | 57°F | 80°F | 68°F | 5.7" |
| July | 62°F | 85°F | 73°F | 5.0" |
| August | 59°F | 82°F | 70°F | 5.4" |
| September | 52°F | 76°F | 63°F | 4.6" |
| October | 42°F | 66°F | 53°F | 4.4" |
| November | 32°F | 53°F | 42°F | 2.5" |
| December | 25°F | 43°F | 33°F | 3.8" |
| Index | Vernon Valley | New Jersey | National |
| Air quality index | 34 | 45 | 42 |
| Pollution index | 9,612,350 | 7,246,891 | 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 | 0.030% |
| Benzene | 0.070% |
| Carbon Tetrachloride | 0.020% |
| Lead | 0.230% |
| Mercury | 0.080% |
| City | Population | Air Quality Index | National Avg. |
| Branchville, NJ | 1,054 | 34 | 32.0% |
| Newton, NJ | 7,935 | 34 | 32.0% |
| Vernon Center, NJ | 1,462 | 34 | 32.0% |
| Port Jervis, NY | 8,541 | 34 | 32.0% |
| Franklin, NJ | 4,737 | 34 | 32.0% |
| Vernon Valley, NJ | 1,171 | 34 | 32.0% |
| City | Population | Air Quality Index | National Avg. |
| Challenge-Brownsville, CA | 1,171 | 44 | 12.0% |
| Silverado Resort, CA | 1,171 | 35 | 30.0% |
| Beloit, OH | 1,171 | 46 | 8.0% |
| McElhattan, PA | 1,171 | 35 | 30.0% |
| Frederic, WI | 1,171 | 46 | 8.0% |
| Vernon Valley, NJ | 1,171 | 34 | 32.0% |
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