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Oswego, SC
Full City Profile · South Carolina · Lee County County
3.0
/5.0
B
Good
211
Population
174/sq mi density
63°F
Avg Temperature
318 sunny days/yr
789
Violent Crime/100K
4,676 property/100K
B
Overall
3.0 / 5.0
Good overall score based on economy, affordability, safety and education
F
Safety
1.0 / 5.0
789 violent crimes/100K (108% above avg)
A+
Education
5.0 / 5.0
0.0% bachelor's degree or higher
Oswego enjoys a temperate climate with an average annual temperature of 63°F (17°C). Winters average 45°F in January while summers reach 81°F in July. The area gets 318 sunny days per year. Air quality is rated Good with a median AQI of 43.
Temperature
45°F Jan (7°C)
81°F Jul (27°C)
| Annual Average | 63.1°F |
| 17% above US avg | |
| January Average | 45°F (7°C) |
| July Average | 81°F (27°C) |
| Sunny Days | 318 days/yr |
Geography
| Elevation | 154 ft (47 m) |
| Area | 1.2 sq mi (3.1 km²) |
| Population Density | 174/sq mi |
| Coordinates | 34.0056°N, 80.2861°W |
| Timezone | America/New_York |
| County | Lee County County |
| Nearest Airport | Hartsville Regional (HVS) 29 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 36.0 / 100 |
| Social Vulnerability | 86.2 / 100 |
| Community Resilience | 18.1 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Relatively Moderate |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Very Low |
| Hail | Relatively Low |
| Strong Wind | Relatively Moderate |
| 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 | — | — | 126 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 45°F (7°C) | 4.3 in | Coldest |
| February | 47°F (8°C) | 3.5 in | |
| March | 55°F (13°C) | 4.3 in | |
| April | 62°F (17°C) | 2.9 in | |
| May | 70°F (21°C) | 3.5 in | |
| June | 77°F (25°C) | 4.8 in | |
| July | 81°F (27°C) | 5.2 in | Warmest, Wettest |
| August | 79°F (26°C) | 5.0 in | |
| September | 74°F (23°C) | 3.7 in | |
| October | 63°F (17°C) | 3.1 in | |
| November | 55°F (13°C) | 2.8 in | Driest |
| December | 47°F (8°C) | 3.3 in |
Oswego has a seasonal temperature swing of 36°F / from 45°F in January to 81°F in July. Total annual precipitation is 46.5 inches, with July being the wettest month (5.2") and November the driest (2.8").