| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 21°F | 41°F | 32°F | 3.4" |
| February | 21°F | 41°F | 31°F | 3.0" |
| March | 27°F | 48°F | 38°F | 3.8" |
| April | 37°F | 59°F | 48°F | 3.9" |
| May | 46°F | 67°F | 57°F | 3.8" |
| June | 56°F | 77°F | 67°F | 4.4" |
| July | 64°F | 83°F | 73°F | 3.5" |
| August | 61°F | 82°F | 72°F | 3.0" |
| September | 55°F | 76°F | 66°F | 3.9" |
| October | 44°F | 66°F | 55°F | 5.2" |
| November | 34°F | 56°F | 45°F | 3.3" |
| December | 27°F | 47°F | 37°F | 4.8" |
| Index | Jamesport | New York | National |
| Air quality index | 41 | 43 | 42 |
| Pollution index | 14,500,300 | 6,179,275 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 280 |
| Days with moderate air quality | 71 |
| Days w/ poor A.Q. for sensitive groups | 12 |
| Days with unhealthy air quality | 2 |
| Pollutant | Total |
| Arsenic | 0.030% |
| Benzene | 0.140% |
| Carbon Tetrachloride | 0.050% |
| Lead | 0.080% |
| Mercury | 0.060% |
| City | Population | Air Quality Index | National Avg. |
| Shelter Island, NY | 1,980 | 37 | 26.0% |
| East Marion, NY | 1,144 | 37 | 26.0% |
| Orient, NY | 1,023 | 37 | 26.0% |
| Baiting Hollow, NY | 2,839 | 41 | 18.0% |
| East Quogue, NY | 5,053 | 41 | 18.0% |
| Jamesport, NY | 1,046 | 41 | 18.0% |
| City | Population | Air Quality Index | National Avg. |
| Ouray, CO | 1,046 | 44 | 12.0% |
| Oxford, KS | 1,046 | 40 | 20.0% |
| La Monte, MO | 1,046 | 38 | 24.0% |
| Chicora, PA | 1,046 | 31 | 38.0% |
| Prospect, PA | 1,046 | 31 | 38.0% |
| Jamesport, NY | 1,046 | 41 | 18.0% |
Here are the best places to live in New York
These are the 10 cheapest cities in New York
Most Dangerous Cities In The US
See the best places to live in Jamesport