| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 29°F | 43°F | 36°F | 4.6" |
| February | 30°F | 44°F | 36°F | 3.9" |
| March | 36°F | 52°F | 43°F | 6.1" |
| April | 46°F | 62°F | 53°F | 4.3" |
| May | 55°F | 71°F | 63°F | 5.1" |
| June | 65°F | 80°F | 72°F | 8.3" |
| July | 70°F | 85°F | 77°F | 6.9" |
| August | 68°F | 83°F | 75°F | 11.2" |
| September | 62°F | 77°F | 69°F | 9.5" |
| October | 52°F | 68°F | 59°F | 6.7" |
| November | 41°F | 57°F | 49°F | 5.5" |
| December | 35°F | 49°F | 42°F | 9.2" |
| Index | North Cape May | New Jersey | National |
| Air quality index | 42 | 45 | 42 |
| Pollution index | 5,772,270 | 7,246,891 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 293 |
| Days with moderate air quality | 72 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.030% |
| Benzene | 0.040% |
| Carbon Tetrachloride | 0.010% |
| Lead | 0.030% |
| Mercury | 0.030% |
| City | Population | Air Quality Index | National Avg. |
| Lewes, DE | 3,266 | 36 | 28.0% |
| Avalon, NJ | 1,456 | 37 | 26.0% |
| Wildwood Crest, NJ | 3,073 | 37 | 26.0% |
| Sea Isle City, NJ | 2,122 | 37 | 26.0% |
| West Wildwood, NJ | 409 | 37 | 26.0% |
| North Cape May, NJ | 3,749 | 42 | 16.0% |
| City | Population | Air Quality Index | National Avg. |
| St. Charles, MN | 3,749 | 15 | 70.0% |
| University, MS | 3,749 | 33 | 34.0% |
| Fordyce, AR | 3,748 | 32 | 36.0% |
| McGehee, AR | 3,748 | 43 | 14.0% |
| West Liberty, IA | 3,750 | 32 | 36.0% |
| North Cape May, NJ | 3,749 | 42 | 16.0% |
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