| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 34°F | 57°F | 44°F | 4.7" |
| February | 32°F | 56°F | 43°F | 4.9" |
| March | 40°F | 67°F | 53°F | 9.2" |
| April | 46°F | 73°F | 59°F | 5.1" |
| May | 54°F | 80°F | 67°F | 3.1" |
| June | 65°F | 87°F | 75°F | 7.7" |
| July | 69°F | 90°F | 78°F | 6.0" |
| August | 71°F | 93°F | 81°F | 3.6" |
| September | 63°F | 88°F | 75°F | 1.5" |
| October | 54°F | 77°F | 64°F | 3.9" |
| November | 39°F | 66°F | 52°F | 4.6" |
| December | 34°F | 58°F | 44°F | 7.2" |
| Index | Great Falls | South Carolina | National |
| Air quality index | 43 | 37 | 42 |
| Pollution index | 2,035,010 | 3,620,438 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 264 |
| Days with moderate air quality | 99 |
| Days w/ poor A.Q. for sensitive groups | 2 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.020% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.010% |
| Mercury | 0.004% |
| City | Population | Air Quality Index | National Avg. |
| Heath Springs, SC | 639 | 43 | 14.0% |
| Winnsboro, SC | 3,208 | 43 | 14.0% |
| Winnsboro Mills, SC | 2,099 | 43 | 14.0% |
| Fort Lawn, SC | 974 | 49 | 2.0% |
| Richburg, SC | 349 | 49 | 2.0% |
| Great Falls, SC | 1,806 | 43 | 14.0% |
| City | Population | Air Quality Index | National Avg. |
| South Charleston, OH | 1,806 | 45 | 10.0% |
| Division No. 8, Subd. H, NL | 1,806 | n/a | |
| Stewartville, AL | 1,805 | 38 | 24.0% |
| Hamilton, GA | 1,805 | 42 | 16.0% |
| Teutopolis, IL | 1,807 | 40 | 20.0% |
| Great Falls, SC | 1,806 | 43 | 14.0% |
Here are the best places to live in South Carolina
These are the largest cities in South Carolina
See the best places to live in Great Falls
Check out the 10 safest cities in South Carolina