| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 38°F | 56°F | 46°F | 6.9" |
| February | 39°F | 57°F | 47°F | 6.6" |
| March | 46°F | 64°F | 55°F | 6.9" |
| April | 55°F | 72°F | 63°F | 6.9" |
| May | 63°F | 78°F | 70°F | 8.1" |
| June | 71°F | 84°F | 77°F | 6.2" |
| July | 73°F | 86°F | 79°F | 11.7" |
| August | 72°F | 86°F | 78°F | 8.1" |
| September | 68°F | 82°F | 74°F | 10.0" |
| October | 57°F | 74°F | 65°F | 13.4" |
| November | 46°F | 65°F | 55°F | 8.1" |
| December | 42°F | 60°F | 50°F | 5.0" |
| Index | Holden Beach | 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. |
| Carolina Shores, NC | 4,539 | 34 | 32.0% |
| Shallotte, NC | 4,314 | 34 | 32.0% |
| Boiling Spring Lakes, NC | 6,335 | 34 | 32.0% |
| Oak Island, NC | 8,308 | 34 | 32.0% |
| Sunset Beach, NC | 4,096 | 34 | 32.0% |
| Holden Beach, NC | 1,011 | 34 | 32.0% |
| City | Population | Air Quality Index | National Avg. |
| Rosa, AL | 1,011 | 43 | 14.0% |
| Calmar, IA | 1,011 | 39 | 22.0% |
| Correctionville, IA | 1,011 | 35 | 30.0% |
| De Soto, IA | 1,011 | 39 | 22.0% |
| Lucama, NC | 1,011 | 40 | 20.0% |
| Holden Beach, NC | 1,011 | 34 | 32.0% |