| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 32°F | 52°F | 41°F | 3.1" |
| February | 32°F | 55°F | 43°F | 3.3" |
| March | 40°F | 64°F | 50°F | 5.2" |
| April | 49°F | 74°F | 61°F | 4.0" |
| May | 57°F | 80°F | 68°F | 5.1" |
| June | 66°F | 88°F | 77°F | 9.3" |
| July | 71°F | 91°F | 80°F | 8.2" |
| August | 69°F | 89°F | 78°F | 7.6" |
| September | 63°F | 84°F | 72°F | 12.2" |
| October | 51°F | 74°F | 61°F | 15.2" |
| November | 40°F | 64°F | 51°F | 4.1" |
| December | 35°F | 57°F | 45°F | 3.7" |
| Index | Franklin | Virginia | National |
| Air quality index | 40 | 58 | 42 |
| Pollution index | 1,867,130 | 1,561,881 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 317 |
| Days with moderate air quality | 48 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.030% |
| Benzene | 0.030% |
| Carbon Tetrachloride | 0.004% |
| Lead | 0.010% |
| Mercury | 0.020% |
| City | Population | Air Quality Index | National Avg. |
| Boykins, VA | 666 | 36 | 28.0% |
| Newsoms, VA | 378 | 36 | 28.0% |
| Severn, NC | 258 | 36 | 28.0% |
| Southampton Meadows, VA | 405 | 40 | 20.0% |
| Windsor, VA | 2,748 | 40 | 20.0% |
| Franklin, VA | 8,015 | 40 | 20.0% |
| City | Population | Air Quality Index | National Avg. |
| Port Jefferson, NY | 8,016 | 43 | 14.0% |
| Downingtown, PA | 8,012 | 42 | 16.0% |
| Stone Mills, ON | 8,012 | n/a | |
| Jefferson, WI | 8,011 | 37 | 26.0% |
| Whitmore Lake, MI | 8,010 | 40 | 20.0% |
| Franklin, VA | 8,015 | 40 | 20.0% |
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