| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 29°F | 51°F | 39°F | 3.2" |
| February | 30°F | 54°F | 41°F | 2.3" |
| March | 38°F | 63°F | 50°F | 3.4" |
| April | 46°F | 73°F | 59°F | 3.6" |
| May | 54°F | 79°F | 66°F | 4.5" |
| June | 63°F | 87°F | 75°F | 4.2" |
| July | 68°F | 90°F | 78°F | 5.2" |
| August | 67°F | 89°F | 77°F | 3.7" |
| September | 60°F | 83°F | 70°F | 4.0" |
| October | 48°F | 73°F | 59°F | 3.5" |
| November | 36°F | 63°F | 48°F | 3.8" |
| December | 32°F | 54°F | 42°F | 3.6" |
| Index | Roxboro | North Carolina | National |
| Air quality index | 44 | 35 | 42 |
| Pollution index | 357,964 | 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 | 0.000% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Milton, NC | 245 | 31 | 38.0% |
| Rougemont, NC | 766 | 44 | 12.0% |
| Stem, NC | 1,207 | 44 | 12.0% |
| Cluster Springs, VA | 797 | 44 | 12.0% |
| Virgilina, VA | 109 | 44 | 12.0% |
| Roxboro, NC | 8,517 | 44 | 12.0% |
| City | Population | Air Quality Index | National Avg. |
| Plympton-Wyoming, ON | 8,517 | n/a | |
| Baxter, MN | 8,518 | 29 | 42.0% |
| Dry Run, OH | 8,514 | 54 | 8.0% |
| Spotswood, NJ | 8,512 | 41 | 18.0% |
| Mammoth Lakes, CA | 8,511 | 47 | 6.0% |
| Roxboro, NC | 8,517 | 44 | 12.0% |