| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 26°F | 46°F | 35°F | 5.7" |
| February | 26°F | 48°F | 36°F | 4.2" |
| March | 34°F | 59°F | 46°F | 4.5" |
| April | 43°F | 70°F | 56°F | 6.3" |
| May | 52°F | 77°F | 64°F | 6.4" |
| June | 61°F | 85°F | 72°F | 6.1" |
| July | 64°F | 87°F | 75°F | 5.9" |
| August | 63°F | 86°F | 73°F | 5.4" |
| September | 56°F | 79°F | 67°F | 6.9" |
| October | 45°F | 69°F | 56°F | 5.9" |
| November | 34°F | 58°F | 45°F | 3.6" |
| December | 29°F | 50°F | 39°F | 5.0" |
| Index | Waynesboro | Virginia | National |
| Air quality index | 40 | 58 | 42 |
| Pollution index | 902,129 | 1,561,881 | 2,726,193 |
| Measurement | Total |
| Days measured | 282 |
| Days with good air quality | 264 |
| Days with moderate air quality | 18 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.040% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.010% |
| Mercury | 0.001% |
| City | Population | Air Quality Index | National Avg. |
| Jolivue, VA | 912 | 36 | 28.0% |
| Verona, VA | 4,108 | 36 | 28.0% |
| Stuarts Draft, VA | 11,723 | 36 | 28.0% |
| Churchville, VA | 259 | 36 | 28.0% |
| Fishersville, VA | 9,512 | 36 | 28.0% |
| Waynesboro, VA | 23,002 | 40 | 20.0% |
| City | Population | Air Quality Index | National Avg. |
| Hudson, OH | 22,996 | 43 | 14.0% |
| Mustang, OK | 22,986 | 48 | 4.0% |
| South Lake Tahoe, CA | 23,049 | 13 | 74.0% |
| Middletown, DE | 23,057 | 42 | 16.0% |
| Mount Pearl, NL | 23,066 | n/a | |
| Waynesboro, VA | 23,002 | 40 | 20.0% |