| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 31°F | 52°F | 40°F | 4.1" |
| February | 31°F | 53°F | 41°F | 2.8" |
| March | 40°F | 63°F | 51°F | 4.2" |
| April | 48°F | 72°F | 60°F | 3.2" |
| May | 55°F | 78°F | 66°F | 2.9" |
| June | 65°F | 87°F | 75°F | 3.2" |
| July | 67°F | 88°F | 77°F | 4.3" |
| August | 68°F | 89°F | 77°F | 5.4" |
| September | 61°F | 81°F | 70°F | 5.1" |
| October | 50°F | 71°F | 59°F | 4.4" |
| November | 39°F | 62°F | 50°F | 4.1" |
| December | 33°F | 53°F | 42°F | 5.1" |
| Index | St. Stephens | North Carolina | National |
| Air quality index | 43 | 35 | 42 |
| Pollution index | 1,564,530 | 2,789,538 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 275 |
| Days with moderate air quality | 90 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.010% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.020% |
| Mercury | 0.010% |
| City | Population | Air Quality Index | National Avg. |
| Maiden, NC | 3,496 | 36 | 28.0% |
| Catawba, NC | 604 | 43 | 14.0% |
| Icard, NC | 2,186 | 43 | 14.0% |
| Newton, NC | 13,417 | 43 | 14.0% |
| Rutherford College, NC | 1,129 | 43 | 14.0% |
| St. Stephens, NC | 9,613 | 43 | 14.0% |
| City | Population | Air Quality Index | National Avg. |
| Greenwood, AR | 9,615 | 36 | 28.0% |
| Arnprior, ON | 9,608 | n/a | |
| Monticello, AR | 9,618 | 35 | 30.0% |
| Audubon, PA | 9,620 | 51 | 2.0% |
| Flossmoor, IL | 9,604 | 55 | 10.0% |
| St. Stephens, NC | 9,613 | 43 | 14.0% |