| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 34°F | 54°F | 43°F | 4.8" |
| February | 35°F | 57°F | 45°F | 4.5" |
| March | 42°F | 66°F | 53°F | 4.6" |
| April | 52°F | 76°F | 63°F | 7.5" |
| May | 60°F | 82°F | 70°F | 8.3" |
| June | 69°F | 90°F | 78°F | 7.3" |
| July | 72°F | 92°F | 80°F | 9.8" |
| August | 71°F | 90°F | 79°F | 6.0" |
| September | 65°F | 84°F | 73°F | 10.4" |
| October | 53°F | 75°F | 62°F | 8.3" |
| November | 41°F | 64°F | 51°F | 6.7" |
| December | 38°F | 58°F | 47°F | 8.0" |
| Index | Benson | North Carolina | National |
| Air quality index | 46 | 35 | 42 |
| Pollution index | 2,919,900 | 2,789,538 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 239 |
| Days with moderate air quality | 126 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.002% |
| Benzene | 0.040% |
| Carbon Tetrachloride | 0.010% |
| Lead | 0.010% |
| Mercury | 0.001% |
| City | Population | Air Quality Index | National Avg. |
| Lillington, NC | 3,690 | 29 | 42.0% |
| Buies Creek, NC | 3,497 | 29 | 42.0% |
| Selma, NC | 7,159 | 40 | 20.0% |
| Smithfield, NC | 13,082 | 40 | 20.0% |
| Vann Crossroads, NC | 417 | 40 | 20.0% |
| Benson, NC | 3,991 | 46 | 8.0% |
| City | Population | Air Quality Index | National Avg. |
| Butte, AK | 3,990 | 31 | 38.0% |
| Carefree, AZ | 3,992 | 74 | 48.0% |
| Vandalia, MO | 3,993 | 41 | 18.0% |
| Menands, NY | 3,993 | 37 | 26.0% |
| Clearview, WA | 3,993 | 45 | 10.0% |
| Benson, NC | 3,991 | 46 | 8.0% |