St. Lawrence, PA
Full City Profile · Pennsylvania · Berks County County
4.3
/5.0
A
Great
1,755
Population
1,950/sq mi density
$81,378
Median Income
$35,682 per capita
$207,600
Home Value
$256,603 Zillow
$1,180
Median Rent
34.2% income on rent
54°F
Avg Temperature
A
Overall
4.3 / 5.0
Strong
A
Economy
4.2 / 5.0
$81,378 median income, 4.3% unemployment
A+
Affordability
5.0 / 5.0
$207,600 home value, $1,180/mo rent
B+
Education
3.6 / 5.0
32.7% bachelor's degree or higher
St. Lawrence experiences four distinct seasons with an average annual temperature of 54°F (12°C). Winters average 31°F in January while summers reach 76°F in July. Annual precipitation totals 45.2 inches. The area receives 26.3 inches of snow annually. Air quality is rated Good with a median AQI of 43.
Temperature
31°F Jan (-1°C)
76°F Jul (25°C)
| Annual Average | 53.7°F |
| 1% below US avg | |
| January Average | 31°F (-1°C) |
| July Average | 76°F (25°C) |
Geography
| Elevation | 366 ft (112 m) |
| Area | 0.3 sq mi (0.9 km²) |
| Population Density | 1,950/sq mi |
| Coordinates | 40.3259°N, 75.8638°W |
| Timezone | America/New_York |
| County | Berks County County |
| Nearest Airport | Reading Regional/Carl A Spaatz Field (RDG) 6 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
| Good Days % | 69.4% |
| Unhealthy Days | 2 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0462 ppm |
| SO₂ (Sulfur Dioxide) | 0.44 ppb |
| PM2.5 (Fine Particles) | 9.2 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 92.7 / 100 |
| Social Vulnerability | 48.5 / 100 |
| Community Resilience | 85.6 / 100 |
Hazard Breakdown
| Tornado | Relatively High |
| Hurricane | Relatively Moderate |
| Earthquake | Relatively Moderate |
| Wildfire | Very Low |
| Flood | Relatively High |
| Hail | Relatively Low |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Moderate |
| Winter Weather | Very High |
| Lightning | Relatively High |
| Ice Storm | Relatively Moderate |
| Drought | Relatively High |
| Cold Wave | Relatively High |
| Landslide | Relatively Moderate |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tsunami History
2 tsunamis recorded within 500 km.
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1895 | HIGH BRIDGE, NJ | Earthquake | - | - | 91 km |
| 1840 | PHILADELPHIA, PENNSYLVANIA | Earthquake | - | - | 81 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 31°F (-1°C) | 3.0 in | Coldest |
| February | 33°F (1°C) | 2.6 in | Driest |
| March | 42°F (5°C) | 3.5 in | |
| April | 53°F (11°C) | 3.4 in | |
| May | 63°F (17°C) | 3.5 in | |
| June | 72°F (22°C) | 4.8 in | |
| July | 76°F (25°C) | 4.8 in | Warmest |
| August | 74°F (24°C) | 4.5 in | |
| September | 67°F (19°C) | 4.9 in | Wettest |
| October | 55°F (13°C) | 3.8 in | |
| November | 45°F (7°C) | 3.0 in | |
| December | 36°F (2°C) | 3.5 in |
St. Lawrence has a seasonal temperature swing of 45°F / from 31°F in January to 76°F in July. Total annual precipitation is 45.2 inches, with September being the wettest month (4.9") and February the driest (2.6").