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Williston, SC
Full City Profile · South Carolina · Barnwell County County
2.7
/5.0
C+
Fair
2,884
Population
322/sq mi density
$35,968
Median Income
$26,948 per capita
$104,000
Home Value
$144,959 Zillow
$685
Median Rent
27.5% income on rent
64°F
Avg Temperature
308 sunny days/yr
585
Violent Crime/100K
4,988 property/100K
C+
Overall
2.7 / 5.0
Fair overall score based on economy, affordability, safety and education
C+
Economy
2.5 / 5.0
$35,968 median income, 2.6% unemployment
A+
Affordability
5.0 / 5.0
$104,000 home value, $685/mo rent
F
Safety
1.0 / 5.0
585 violent crimes/100K (54% above avg)
C
Education
2.3 / 5.0
16.7% bachelor's degree or higher
Williston enjoys a temperate climate with an average annual temperature of 64°F (18°C). Winters average 46°F in January while summers reach 81°F in July. The area gets 308 sunny days per year. Annual precipitation totals 46.2 inches. Air quality is rated Good with a median AQI of 43.
Temperature
46°F Jan (8°C)
81°F Jul (27°C)
| Annual Average | 63.9°F |
| 18% above US avg | |
| January Average | 46°F (8°C) |
| July Average | 81°F (27°C) |
| Sunny Days | 308 days/yr |
Geography
| Elevation | 349 ft (106 m) |
| Area | 9.0 sq mi (23.2 km²) |
| Population Density | 322/sq mi |
| Coordinates | 33.4017°N, 81.4219°W |
| Timezone | America/New_York |
| County | Barnwell County County |
| Nearest Airport | Barnwell Regional (BNL) 10 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 45.8 / 100 |
| Social Vulnerability | 98.9 / 100 |
| Community Resilience | 19.1 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Relatively Moderate |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Relatively Low |
| Strong Wind | Relatively Low |
| Heat Wave | Relatively Low |
| Winter Weather | Very Low |
| Lightning | Relatively Low |
| Ice Storm | Relatively Low |
| Drought | Relatively Low |
| Cold Wave | Relatively Low |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tsunami History
1 tsunami recorded within 500 km.
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1886 | CHARLESTON, SC | Earthquake | — | — | 144 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 46°F (8°C) | 4.5 in | Coldest |
| February | 48°F (9°C) | 3.9 in | |
| March | 56°F (13°C) | 4.6 in | |
| April | 63°F (17°C) | 2.9 in | |
| May | 71°F (22°C) | 3.6 in | |
| June | 77°F (25°C) | 5.1 in | Wettest |
| July | 81°F (27°C) | 4.7 in | Warmest |
| August | 79°F (26°C) | 5.0 in | |
| September | 74°F (23°C) | 3.5 in | |
| October | 64°F (18°C) | 3.1 in | |
| November | 55°F (13°C) | 2.7 in | Driest |
| December | 48°F (9°C) | 3.5 in |
Williston has a seasonal temperature swing of 34°F / from 46°F in January to 81°F in July. Total annual precipitation is 47.1 inches, with June being the wettest month (5.1") and November the driest (2.7").