| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 26°F | 41°F | 33°F | 4.8" |
| February | 28°F | 44°F | 35°F | 0.3" |
| March | 35°F | 51°F | 42°F | 1.8" |
| April | 44°F | 62°F | 53°F | 6.1" |
| May | 54°F | 71°F | 62°F | 8.3" |
| June | 63°F | 80°F | 71°F | 1.8" |
| July | 68°F | 84°F | 76°F | 7.8" |
| August | 66°F | 82°F | 74°F | 2.3" |
| September | 61°F | 76°F | 68°F | 4.8" |
| October | 50°F | 66°F | 57°F | 1.6" |
| November | 39°F | 56°F | 46°F | 1.3" |
| December | 32°F | 47°F | 39°F | 1.2" |
| Index | Manahawkin | New Jersey | National |
| Air quality index | 37 | 45 | 42 |
| Pollution index | 7,605,180 | 7,246,891 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 328 |
| Days with moderate air quality | 36 |
| Days w/ poor A.Q. for sensitive groups | 1 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.010% |
| Benzene | 0.080% |
| Carbon Tetrachloride | 0.030% |
| Lead | 0.050% |
| Mercury | 0.050% |
| City | Population | Air Quality Index | National Avg. |
| Forked River, NJ | 5,066 | 37 | 26.0% |
| Harvey Cedars, NJ | 452 | 37 | 26.0% |
| Port Republic, NJ | 1,127 | 37 | 26.0% |
| Tuckerton, NJ | 3,373 | 37 | 26.0% |
| Waretown, NJ | 2,514 | 37 | 26.0% |
| Manahawkin, NJ | 1,957 | 37 | 26.0% |
| City | Population | Air Quality Index | National Avg. |
| Pecatonica, IL | 1,957 | 42 | 16.0% |
| Mexico, ME | 1,957 | 40 | 20.0% |
| Willow, AK | 1,956 | 31 | 38.0% |
| Elberta, AL | 1,958 | 37 | 26.0% |
| Vincent, AL | 1,956 | 38 | 24.0% |
| Manahawkin, NJ | 1,957 | 37 | 26.0% |
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