| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 36°F | 60°F | 47°F | 4.9" |
| February | 37°F | 62°F | 49°F | 5.9" |
| March | 44°F | 69°F | 56°F | 5.1" |
| April | 52°F | 77°F | 64°F | 4.3" |
| May | 59°F | 82°F | 70°F | 6.7" |
| June | 69°F | 89°F | 78°F | 7.2" |
| July | 72°F | 92°F | 81°F | 6.9" |
| August | 72°F | 90°F | 80°F | 8.8" |
| September | 66°F | 85°F | 75°F | 12.9" |
| October | 54°F | 77°F | 65°F | 10.5" |
| November | 44°F | 69°F | 55°F | 8.6" |
| December | 39°F | 63°F | 50°F | 7.0" |
| Index | Wilmington | North Carolina | National |
| Air quality index | 34 | 35 | 42 |
| Pollution index | 4,252,890 | 2,789,538 | 2,726,193 |
| Measurement | Total |
| Days measured | 348 |
| Days with good air quality | 319 |
| Days with moderate air quality | 29 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.010% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.090% |
| Lead | 0.020% |
| Mercury | 0.004% |
| City | Population | Air Quality Index | National Avg. |
| Myrtle Grove, NC | 11,921 | 34 | 32.0% |
| Belville, NC | 2,696 | 34 | 32.0% |
| Hightsville, NC | 823 | 34 | 32.0% |
| Navassa, NC | 2,135 | 34 | 32.0% |
| Porters Neck, NC | 7,693 | 34 | 32.0% |
| Wilmington, NC | 122,162 | 34 | 32.0% |
| City | Population | Air Quality Index | National Avg. |
| Hartford, CT | 122,549 | 41 | 18.0% |
| Odessa, TX | 122,630 | 28 | 44.0% |
| Columbia, MO | 122,659 | 38 | 24.0% |
| Victorville, CA | 122,958 | 89 | 78.0% |
| Vallejo, CA | 121,275 | 40 | 20.0% |
| Wilmington, NC | 122,162 | 34 | 32.0% |
Here are the best places to live in North Carolina
See the best places to live in Wilmington
Check out the 10 safest cities in North Carolina
These are the largest cities in North Carolina