| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 39°F | 55°F | 47°F | 4.7" |
| February | 39°F | 55°F | 47°F | 5.1" |
| March | 45°F | 61°F | 53°F | 4.2" |
| April | 54°F | 68°F | 61°F | 4.8" |
| May | 62°F | 76°F | 69°F | 4.6" |
| June | 71°F | 83°F | 77°F | 4.1" |
| July | 75°F | 86°F | 80°F | 5.8" |
| August | 74°F | 86°F | 80°F | 6.7" |
| September | 70°F | 82°F | 76°F | 9.4" |
| October | 61°F | 75°F | 68°F | 6.9" |
| November | 50°F | 65°F | 57°F | 5.1" |
| December | 44°F | 60°F | 52°F | 5.0" |
| Index | Ocracoke | North Carolina | National |
| Air quality index | 37 | 35 | 42 |
| Pollution index | 3,449,020 | 2,789,538 | 2,726,193 |
| Measurement | Total |
| Days measured | 259 |
| Days with good air quality | 239 |
| Days with moderate air quality | 20 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.050% |
| Benzene | 0.030% |
| Carbon Tetrachloride | 0.040% |
| Lead | 0.030% |
| Mercury | 0.010% |
| City | Population | Air Quality Index | National Avg. |
| Ocracoke, NC | 1,000 | 37 | 26.0% |
| City | Population | Air Quality Index | National Avg. |
| Chatom, AL | 1,000 | 42 | 16.0% |
| Hollins, AL | 1,000 | 38 | 24.0% |
| Lakeview, AR | 1,000 | 36 | 28.0% |
| Larchwood, IA | 1,000 | 36 | 28.0% |
| Seabrook Beach, NH | 1,000 | 37 | 26.0% |
| Ocracoke, NC | 1,000 | 37 | 26.0% |