South Williamsport, PA
Full City Profile · Pennsylvania · Lycoming County County
3.2
/5.0
B
Good
6,216
Population
3,272/sq mi density
$66,810
Median Income
$39,091 per capita
$186,000
Home Value
$206,756 Zillow
$911
Median Rent
27.3% income on rent
51°F
Avg Temperature
41
Violent Crime/100K
657 property/100K
B
Overall
3.2 / 5.0
Good overall score based on economy, affordability, safety and education
B+
Economy
3.6 / 5.0
$66,810 median income, 6.0% unemployment
A+
Affordability
5.0 / 5.0
$186,000 home value, $911/mo rent
F
Safety
1.0 / 5.0
41 violent crimes/100K
B
Education
3.1 / 5.0
26.6% bachelor's degree or higher
South Williamsport experiences four distinct seasons with an average annual temperature of 51°F (11°C). Winters average 28°F in January while summers reach 74°F in July. Annual precipitation totals 43.5 inches. The area receives 35.8 inches of snow annually. Air quality is rated Good with a median AQI of 39.
Temperature
28°F Jan (-2°C)
74°F Jul (23°C)
| Annual Average | 51.3°F |
| 5% below US avg | |
| January Average | 28°F (-2°C) |
| July Average | 74°F (23°C) |
Geography
| Elevation | 530 ft (162 m) |
| Area | 2.2 sq mi (5.6 km²) |
| Population Density | 3,272/sq mi |
| Coordinates | 41.2294°N, 77.0005°W |
| Timezone | America/New_York |
| County | Lycoming County County |
| Nearest Airport | Williamsport Regional (IPT) 4 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 39.0 |
| Rating | Good |
| Good Days % | 76.8% |
| Unhealthy Days | 1 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0442 ppm |
| PM2.5 (Fine Particles) | 6.3 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 79.6 / 100 |
| Social Vulnerability | 41.9 / 100 |
| Community Resilience | 88.6 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Relatively Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Very Low |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively High |
| Lightning | Relatively Moderate |
| Ice Storm | Very Low |
| Drought | No Rating |
| Cold Wave | Relatively Low |
| Landslide | Relatively Low |
| Avalanche | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 28°F (-2°C) | 3.0 in | Coldest |
| February | 30°F (-1°C) | 2.3 in | Driest |
| March | 39°F (4°C) | 3.1 in | |
| April | 50°F (10°C) | 3.6 in | |
| May | 61°F (16°C) | 3.9 in | |
| June | 69°F (21°C) | 3.9 in | |
| July | 74°F (23°C) | 4.6 in | Warmest |
| August | 72°F (22°C) | 4.2 in | |
| September | 65°F (18°C) | 4.8 in | Wettest |
| October | 53°F (12°C) | 3.7 in | |
| November | 42°F (5°C) | 3.3 in | |
| December | 33°F (0°C) | 3.3 in |
South Williamsport has a seasonal temperature swing of 46°F / from 28°F in January to 74°F in July. Total annual precipitation is 43.5 inches, with September being the wettest month (4.8") and February the driest (2.3").