| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 35°F | 58°F | 45°F | 3.6" |
| February | 36°F | 59°F | 47°F | 4.0" |
| March | 43°F | 66°F | 54°F | 4.1" |
| April | 52°F | 75°F | 63°F | 4.2" |
| May | 60°F | 81°F | 70°F | 4.2" |
| June | 68°F | 88°F | 77°F | 5.3" |
| July | 72°F | 90°F | 80°F | 5.7" |
| August | 71°F | 89°F | 79°F | 7.8" |
| September | 66°F | 84°F | 74°F | 7.5" |
| October | 55°F | 76°F | 64°F | 5.0" |
| November | 43°F | 67°F | 54°F | 4.3" |
| December | 39°F | 61°F | 49°F | 4.1" |
| Index | North Topsail Beach | North Carolina | National |
| Air quality index | 34 | 35 | 42 |
| Pollution index | 2,609,700 | 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 | 0.001% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.030% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Holly Ridge, NC | 2,649 | 34 | 32.0% |
| Surf City, NC | 3,187 | 34 | 32.0% |
| Sneads Ferry, NC | 2,326 | 34 | 32.0% |
| Topsail Beach, NC | 466 | 34 | 32.0% |
| North Topsail Beach, NC | 849 | 34 | 32.0% |
| City | Population | Air Quality Index | National Avg. |
| Savoonga, AK | 849 | 38 | 24.0% |
| East Tulare Villa, CA | 849 | 66 | 32.0% |
| Clark Fork, ID | 849 | 43 | 14.0% |
| Deer River, MN | 849 | 29 | 42.0% |
| Corfu, NY | 849 | 39 | 22.0% |
| North Topsail Beach, NC | 849 | 34 | 32.0% |
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