Plum Branch, SC
Full City Profile · South Carolina · McCormick County County
4.8
/5.0
A+
Excellent
95
Population
128/sq mi density
$145,833
Median Income
$56,321 per capita
$121,900
Home Value
$384,538 Zillow
63°F
Avg Temperature
A+
Overall
4.8 / 5.0
Strong
A+
Economy
4.5 / 5.0
$145,833 median income, 2.0% unemployment
A+
Affordability
5.0 / 5.0
$121,900 home value, /mo rent
A+
Education
5.0 / 5.0
58.4% bachelor's degree or higher
Plum Branch enjoys a temperate climate with an average annual temperature of 63°F (17°C). Winters average 44°F in January while summers reach 81°F in July. Annual precipitation totals 47.3 inches. The area receives 0.3 inches of snow annually.
Temperature
44°F Jan (7°C)
81°F Jul (27°C)
| Annual Average | 62.5°F |
| 16% above US avg | |
| January Average | 44°F (7°C) |
| July Average | 81°F (27°C) |
Geography
| Elevation | 428 ft (130 m) |
| Area | 0.4 sq mi (0.9 km²) |
| Population Density | 128/sq mi |
| Coordinates | 33.8490°N, 82.2638°W |
| Timezone | America/New_York |
| County | McCormick County County |
| Nearest Airport | Aiken Regional (AIK) 36 miles away |
Precipitation & Snow
Air Quality
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 9.5 / 100 |
| Social Vulnerability | 95.7 / 100 |
| Community Resilience | 18.2 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Relatively Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Very Low |
| Hail | Very Low |
| Strong Wind | Relatively Low |
| Heat Wave | Very Low |
| Winter Weather | Very Low |
| Lightning | Very Low |
| Ice Storm | Relatively Low |
| Drought | No Rating |
| Cold Wave | Relatively Low |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 44°F (7°C) | 4.2 in | Coldest |
| February | 46°F (8°C) | 4.0 in | |
| March | 54°F (12°C) | 4.5 in | |
| April | 62°F (17°C) | 3.2 in | |
| May | 70°F (21°C) | 3.2 in | |
| June | 78°F (25°C) | 4.6 in | Wettest |
| July | 81°F (27°C) | 4.5 in | Warmest |
| August | 80°F (27°C) | 4.5 in | |
| September | 74°F (24°C) | 3.6 in | |
| October | 64°F (18°C) | 3.1 in | Driest |
| November | 52°F (11°C) | 3.6 in | |
| December | 46°F (8°C) | 4.3 in |
Plum Branch has a seasonal temperature swing of 37°F / from 44°F in January to 81°F in July. Total annual precipitation is 47.3 inches, with June being the wettest month (4.6") and October the driest (3.1").