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St. Lawrence, PA
Full City Profile · Pennsylvania · Berks County County
3.5
/5.0
B+
Good
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
275 sunny days/yr
865
Violent Crime/100K
2,904 property/100K
B+
Overall
3.5 / 5.0
Good overall score based on economy, affordability, safety and education
A
Economy
4.4 / 5.0
$81,378 median income, 2.8% unemployment
A+
Affordability
5.0 / 5.0
$207,600 home value, $1,180/mo rent
F
Safety
1.0 / 5.0
865 violent crimes/100K (128% above avg)
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. The area gets 275 sunny days per year. Annual precipitation totals 45.2 inches. Air quality is rated Good with a median AQI of 40.
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) |
| Sunny Days | 275 days/yr |
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 | 40.0 |
| Rating | Good |
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) | 3.4 in | |
| February | 31°F (-1°C) | 2.8 in | Coldest, Driest |
| March | 40°F (4°C) | 3.5 in | |
| April | 50°F (10°C) | 3.7 in | |
| May | 60°F (16°C) | 4.4 in | Wettest |
| June | 69°F (20°C) | 4.3 in | |
| July | 76°F (25°C) | 4.3 in | Warmest |
| August | 72°F (22°C) | 3.9 in | |
| September | 65°F (19°C) | 4.1 in | |
| October | 54°F (12°C) | 3.3 in | |
| November | 44°F (7°C) | 3.8 in | |
| December | 34°F (1°C) | 3.5 in |
St. Lawrence has a seasonal temperature swing of 46°F / from 31°F in February to 76°F in July. Total annual precipitation is 45.0 inches, with May being the wettest month (4.4") and February the driest (2.8").