Average Rainfall for South Carolina in September
The tables below give monthly averages for rainfall during September at cities, towns and parks in South Carolina.
Each place has a total for the amount of precipitation it usually receives this month. There is also a count of the number of days with wet weather, when precipitation amounts to 0.01 inches (0.25 millimetres) or more.
The rainfall totals are averages based on weather data collected from 1991 to 2020 for the US National Centers for Environmental Information.
You can jump to a separate table for each region of the state: Coast & Lowcountry, Midlands and Upstate.
Coast & Lowcountry
| Days | Place | Inches | Millimetres |
|---|---|---|---|
| 10 | Beaufort | 4.0 | 102 |
| 9 | Brookgreen Gardens | 7.1 | 179 |
| 10 | Charleston | 6.0 | 153 |
| 9 | Edisto Island | 5.2 | 132 |
| 12 | McClellanville | 6.8 | 173 |
| 9 | Moncks Corner | 5.8 | 148 |
| 11 | North Myrtle Beach | 6.7 | 169 |
Midlands
| Days | Place | Inches | Millimetres |
|---|---|---|---|
| 8 | Columbia | 3.9 | 99 |
| 9 | Florence | 4.5 | 115 |
| 9 | Orangeburg | 4.5 | 114 |
| 9 | Sumter | 4.4 | 111 |
Upstate South Carolina
| Days | Place | Inches | Millimetres |
|---|---|---|---|
| 6 | Anderson | 3.8 | 96 |
| 10 | Caesars Head State Park | 6.6 | 168 |
| 7 | Calhoun Falls | 3.5 | 89 |
| 8 | Gaffney | 3.9 | 99 |
| 8 | Greenville | 3.5 | 88 |
| 9 | Greenwood | 3.4 | 85 |
| 8 | Greer | 3.7 | 95 |
| 9 | Longcreek | 4.9 | 124 |
| 7 | Ninety Nine Islands Reservoir | 3.6 | 92 |
| 7 | Spartanburg | 3.7 | 93 |
Reference
NOAA National Centers for Environmental Information (NCEI). Climate Normals.