| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 33°F | 53°F | 42°F | 6.3" |
| February | 33°F | 55°F | 43°F | 5.4" |
| March | 40°F | 63°F | 51°F | 5.9" |
| April | 49°F | 73°F | 60°F | 9.5" |
| May | 57°F | 78°F | 67°F | 5.9" |
| June | 65°F | 86°F | 75°F | 8.2" |
| July | 70°F | 89°F | 78°F | 8.0" |
| August | 68°F | 87°F | 77°F | 7.9" |
| September | 63°F | 81°F | 71°F | 9.9" |
| October | 51°F | 73°F | 61°F | 11.2" |
| November | 40°F | 62°F | 50°F | 5.6" |
| December | 36°F | 56°F | 45°F | 7.7" |
| Index | Harrellsville | North Carolina | National |
| Air quality index | 0 | 35 | 42 |
| Pollution index | 1,867,130 | 2,789,538 | 2,726,193 |
| Measurement | Total |
| Days measured | 352 |
| Days with good air quality | 352 |
| Days with moderate air quality | 0 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.030% |
| Benzene | 0.030% |
| Carbon Tetrachloride | 0.004% |
| Lead | 0.010% |
| Mercury | 0.020% |
| City | Population | Air Quality Index | National Avg. |
| Askewville, NC | 182 | 0 | 100.0% |
| Ahoskie, NC | 4,819 | 0 | 100.0% |
| Cofield, NC | 421 | 0 | 100.0% |
| Colerain, NC | 270 | 0 | 100.0% |
| Powellsville, NC | 247 | 0 | 100.0% |
| Harrellsville, NC | 177 | 0 | 100.0% |
| City | Population | Air Quality Index | National Avg. |
| Linn Grove, IA | 177 | 35 | 30.0% |
| Woden, IA | 177 | 15 | 70.0% |
| Gaylord, KS | 177 | 19 | 62.0% |
| Prospect, LA | 177 | 30 | 40.0% |
| Bay View, MI | 177 | 36 | 28.0% |
| Harrellsville, NC | 177 | 0 | 100.0% |
Here are the best places to live in North Carolina
Most Dangerous States In The US
See the best places to live in Harrellsville
Check out the 10 safest cities in North Carolina