| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 33°F | 48°F | 40°F | 5.9" |
| February | 33°F | 50°F | 41°F | 3.9" |
| March | 40°F | 58°F | 48°F | 8.0" |
| April | 49°F | 68°F | 58°F | 4.6" |
| May | 58°F | 76°F | 66°F | 11.8" |
| June | 67°F | 84°F | 75°F | 6.6" |
| July | 72°F | 88°F | 79°F | 7.6" |
| August | 69°F | 86°F | 77°F | 7.9" |
| September | 64°F | 80°F | 71°F | 9.6" |
| October | 53°F | 72°F | 62°F | 8.0" |
| November | 43°F | 60°F | 51°F | 3.5" |
| December | 37°F | 53°F | 45°F | 7.3" |
| Index | Lee Mont | Virginia | National |
| Air quality index | 41 | 58 | 42 |
| Pollution index | 2,109,850 | 1,561,881 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 304 |
| Days with moderate air quality | 58 |
| Days w/ poor A.Q. for sensitive groups | 3 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.003% |
| Benzene | 0.001% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.001% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Horntown, VA | 261 | 36 | 28.0% |
| Hallwood, VA | 272 | 36 | 28.0% |
| Modest Town, VA | 232 | 36 | 28.0% |
| Temperanceville, VA | 171 | 36 | 28.0% |
| New Church, VA | 182 | 36 | 28.0% |
| Lee Mont, VA | 29 | 41 | 18.0% |
| City | Population | Air Quality Index | National Avg. |
| Portland, IA | 29 | 15 | 70.0% |
| Annapolis, IL | 29 | 45 | 10.0% |
| Cobden, MN | 29 | 32 | 36.0% |
| Louisburg, MN | 29 | 25 | 50.0% |
| Biehle, MO | 29 | 43 | 14.0% |
| Lee Mont, VA | 29 | 41 | 18.0% |