| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 35°F | 58°F | 46°F | 2.4" |
| February | 36°F | 61°F | 48°F | 3.7" |
| March | 43°F | 69°F | 55°F | 3.2" |
| April | 52°F | 78°F | 64°F | 3.5" |
| May | 60°F | 84°F | 71°F | 4.7" |
| June | 69°F | 90°F | 79°F | 4.8" |
| July | 72°F | 92°F | 81°F | 6.4" |
| August | 71°F | 91°F | 80°F | 4.5" |
| September | 66°F | 86°F | 75°F | 5.1" |
| October | 54°F | 77°F | 64°F | 4.2" |
| November | 42°F | 68°F | 54°F | 2.8" |
| December | 39°F | 62°F | 50°F | 4.0" |
| Index | Lynchburg | South Carolina | National |
| Air quality index | 40 | 37 | 42 |
| Pollution index | 1,817,360 | 3,620,438 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 288 |
| Days with moderate air quality | 77 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.010% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.020% |
| Mercury | 0.001% |
| City | Population | Air Quality Index | National Avg. |
| Timmonsville, SC | 2,464 | 40 | 20.0% |
| Bishopville, SC | 3,043 | 40 | 20.0% |
| Oswego, SC | 197 | 40 | 20.0% |
| Turbeville, SC | 990 | 40 | 20.0% |
| East Sumter, SC | 1,208 | 40 | 20.0% |
| Lynchburg, SC | 430 | 40 | 20.0% |
| City | Population | Air Quality Index | National Avg. |
| Bellflower, IL | 430 | 42 | 16.0% |
| Chandlerville, IL | 430 | 40 | 20.0% |
| Hope, KS | 430 | 32 | 36.0% |
| Friendsville, MD | 430 | 36 | 28.0% |
| Gunnison, MS | 430 | 43 | 14.0% |
| Lynchburg, SC | 430 | 40 | 20.0% |
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