South Carolina winter weather risk
Horry County has the highest winter weather risk in South Carolina, scoring 95.9 out of 100 — rated "Relatively High" by FEMA's National Risk Index.
| # | County | NRI score | Rating |
NOAA events 2016–2026 |
|---|---|---|---|---|
| 1 | Horry County | 95.9 | Relatively High | 0 |
| 2 | Richland County | 86.4 | Relatively High | 0 |
| 3 | Charleston County | 84.2 | Relatively Moderate | 0 |
| 4 | Florence County | 78.1 | Relatively Moderate | 0 |
| 5 | Lexington County | 76.5 | Relatively Moderate | 0 |
| 6 | Berkeley County | 76.2 | Relatively Moderate | 0 |
| 7 | Beaufort County | 69.9 | Relatively Moderate | 0 |
| 8 | Darlington County | 68.1 | Relatively Moderate | 0 |
| 9 | Dorchester County | 68 | Relatively Moderate | 0 |
| 10 | York County | 65.4 | Relatively Moderate | 0 |
| 11 | Orangeburg County | 64.9 | Relatively Moderate | 0 |
| 12 | Sumter County | 61 | Relatively Moderate | 0 |
| 13 | Spartanburg County | 60.7 | Relatively Low | 0 |
| 14 | Greenville County | 56 | Relatively Low | 0 |
| 15 | Georgetown County | 54.6 | Relatively Low | 0 |
| 16 | Aiken County | 53 | Relatively Low | 1 |
| 17 | Dillon County | 52.1 | Relatively Low | 0 |
| 18 | Colleton County | 48.2 | Relatively Low | 0 |
| 19 | Chesterfield County | 46.1 | Relatively Low | 0 |
| 20 | Marlboro County | 44.8 | Relatively Low | 0 |
| 21 | Lancaster County | 44.7 | Relatively Low | 0 |
| 22 | Marion County | 44.2 | Relatively Low | 0 |
| 23 | Kershaw County | 43.2 | Relatively Low | 0 |
| 24 | Williamsburg County | 39.6 | Relatively Low | 0 |
| 25 | Laurens County | 38.8 | Relatively Low | 0 |
| 26 | Anderson County | 36.8 | Relatively Low | 0 |
| 27 | Clarendon County | 36.1 | Relatively Low | 0 |
| 28 | Cherokee County | 29.4 | Relatively Low | 0 |
| 29 | Oconee County | 23.8 | Very Low | 0 |
| 30 | Greenwood County | 21.9 | Very Low | 0 |
| 31 | Newberry County | 21.9 | Very Low | 0 |
| 32 | Chester County | 21.2 | Very Low | 0 |
| 33 | Fairfield County | 20.9 | Very Low | 0 |
| 34 | Bamberg County | 20.4 | Very Low | 0 |
| 35 | Pickens County | 20.4 | Very Low | 0 |
| 36 | Jasper County | 20.3 | Very Low | 0 |
| 37 | Lee County | 18.3 | Very Low | 0 |
| 38 | Barnwell County | 17.3 | Very Low | 0 |
| 39 | Calhoun County | 15.6 | Very Low | 0 |
| 40 | Union County | 14.9 | Very Low | 0 |
| 41 | Hampton County | 14 | Very Low | 0 |
| 42 | Edgefield County | 13.1 | Very Low | 0 |
| 43 | Saluda County | 13.1 | Very Low | 0 |
| 44 | Allendale County | 11.3 | Very Low | 0 |
| 45 | Abbeville County | 8.6 | Very Low | 0 |
| 46 | McCormick County | 3.2 | Very Low | 0 |
Source: FEMA National Risk Index v1.20.0, December 2025. Scores are 0–100 percentile rankings among all US counties. See the methodology page for definitions. Download the full CSV for all counties.
Winter Weather risk nationally:
Other hazard risks in South Carolina:
Frequently asked questions
What is the highest winter weather risk county in South Carolina?
Horry County, SC has the highest winter weather risk in South Carolina, with a FEMA National Risk Index score of 95.9 out of 100 (rated "Relatively High").
What causes winter weather risk in South Carolina?
Winter weather risk captures expected losses from heavy snow, blizzards, and mixed precipitation. Highest scores appear in the Great Lakes snowbelt, northern Rockies, and interior Northeast, where lake-effect and orographic snowfall is frequent. Winter weather impacts transportation networks, utilities, agriculture, and population health.