| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 34°F | 54°F | 43°F | 5.9" |
| February | 36°F | 59°F | 46°F | 5.5" |
| March | 43°F | 67°F | 54°F | 5.3" |
| April | 52°F | 76°F | 63°F | 6.6" |
| May | 60°F | 83°F | 71°F | 7.1" |
| June | 67°F | 91°F | 78°F | 7.7" |
| July | 71°F | 91°F | 80°F | 5.5" |
| August | 70°F | 90°F | 79°F | 7.1" |
| September | 64°F | 85°F | 74°F | 10.4" |
| October | 52°F | 75°F | 63°F | 8.3" |
| November | 41°F | 64°F | 52°F | 8.4" |
| December | 38°F | 59°F | 47°F | 7.7" |
| Index | Wallace | South Carolina | National |
| Air quality index | 40 | 37 | 42 |
| Pollution index | 691,074 | 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 | 0.001% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.003% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Old Hundred, NC | 545 | 30 | 40.0% |
| Tatum, SC | 276 | 30 | 40.0% |
| Hamlet, NC | 6,366 | 30 | 40.0% |
| Gibson, NC | 680 | 30 | 40.0% |
| Cheraw, SC | 5,596 | 40 | 20.0% |
| Wallace, SC | 713 | 40 | 20.0% |
| City | Population | Air Quality Index | National Avg. |
| Caddo Valley, AR | 713 | 32 | 36.0% |
| Round Valley, AZ | 713 | 60 | 20.0% |
| Hanover, IL | 713 | 42 | 16.0% |
| Parkway Village, KY | 713 | 49 | 2.0% |
| North Brentwood, MD | 713 | 47 | 6.0% |
| Wallace, SC | 713 | 40 | 20.0% |
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