St. Marys, PA
Full City Profile · Pennsylvania · Elk County County
3.0
/5.0
B
Good
12,612
Population
127/sq mi density
$64,471
Median Income
$36,888 per capita
$143,900
Home Value
$74,982 Zillow
$756
Median Rent
27.9% income on rent
45°F
Avg Temperature
122
Violent Crime/100K
651 property/100K
B
Overall
3.0 / 5.0
Good overall score based on economy, affordability, safety and education
B
Economy
3.3 / 5.0
$64,471 median income, 8.5% unemployment
A+
Affordability
5.0 / 5.0
$143,900 home value, $756/mo rent
F
Safety
1.0 / 5.0
122 violent crimes/100K
C+
Education
2.6 / 5.0
20.5% bachelor's degree or higher
St. Marys has a cool climate with an average annual temperature of 45°F (7°C). Winters average 22°F in January while summers reach 67°F in July. Annual precipitation totals 46.4 inches. The area receives 66.0 inches of snow annually. Air quality is rated Good with a median AQI of 34.
Temperature
22°F Jan (-6°C)
67°F Jul (19°C)
| Annual Average | 45.1°F |
| 16% below US avg | |
| January Average | 22°F (-6°C) |
| July Average | 67°F (19°C) |
Geography
| Elevation | 1,713 ft (522 m) |
| Area | 99.5 sq mi (257.8 km²) |
| Population Density | 127/sq mi |
| Coordinates | 41.4550°N, 78.5202°W |
| Timezone | America/New_York |
| County | Elk County County |
| Nearest Airport | Bradford Regional (BFD) 25 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 34.0 |
| Rating | Good |
| Good Days % | 95.8% |
| Unhealthy Days | 0 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0422 ppm |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 45.2 / 100 |
| Social Vulnerability | 29.6 / 100 |
| Community Resilience | 88.5 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Hurricane | Relatively Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Very Low |
| Strong Wind | Relatively Low |
| Heat Wave | Very Low |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively Moderate |
| Ice Storm | Very Low |
| Drought | No Rating |
| Cold Wave | Relatively Low |
| Landslide | Relatively Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 22°F (-6°C) | 3.5 in | Coldest |
| February | 23°F (-5°C) | 2.7 in | Driest |
| March | 32°F (-0°C) | 3.4 in | |
| April | 44°F (7°C) | 4.0 in | |
| May | 55°F (13°C) | 4.3 in | |
| June | 63°F (17°C) | 4.5 in | |
| July | 67°F (19°C) | 4.7 in | Warmest, Wettest |
| August | 66°F (19°C) | 4.3 in | |
| September | 59°F (15°C) | 4.0 in | |
| October | 48°F (9°C) | 3.9 in | |
| November | 37°F (3°C) | 3.8 in | |
| December | 27°F (-3°C) | 3.6 in |
St. Marys has a seasonal temperature swing of 45°F / from 22°F in January to 67°F in July. Total annual precipitation is 46.4 inches, with July being the wettest month (4.7") and February the driest (2.7").