| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 30°F | 51°F | 40°F | 4.0" |
| February | 31°F | 54°F | 42°F | 4.4" |
| March | 39°F | 63°F | 50°F | 4.2" |
| April | 48°F | 73°F | 60°F | 5.4" |
| May | 56°F | 79°F | 67°F | 7.6" |
| June | 65°F | 88°F | 76°F | 8.9" |
| July | 69°F | 90°F | 79°F | 6.9" |
| August | 68°F | 88°F | 77°F | 11.6" |
| September | 62°F | 82°F | 71°F | 7.0" |
| October | 50°F | 73°F | 61°F | 8.0" |
| November | 39°F | 63°F | 50°F | 6.2" |
| December | 35°F | 56°F | 44°F | 5.2" |
| Index | Boydton | Virginia | National |
| Air quality index | 44 | 58 | 42 |
| Pollution index | 357,964 | 1,561,881 | 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. |
| Fairview, VA | 151 | 26 | 48.0% |
| Thynedale, VA | 50 | 26 | 48.0% |
| Chase City, VA | 2,829 | 26 | 48.0% |
| Baskerville, VA | 291 | 36 | 28.0% |
| Union Level, VA | 84 | 36 | 28.0% |
| Boydton, VA | 264 | 44 | 12.0% |
| City | Population | Air Quality Index | National Avg. |
| Decker, IN | 264 | 36 | 28.0% |
| Losantville, IN | 264 | 28 | 44.0% |
| Cuba, KS | 264 | 32 | 36.0% |
| Oakland, KY | 264 | 43 | 14.0% |
| Petersham, MA | 264 | 40 | 20.0% |
| Boydton, VA | 264 | 44 | 12.0% |