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St. Mary's, AK
Full City Profile · Alaska · Kusilvak Census Area County
2.4
/5.0
C
Fair
788
Population
18/sq mi density
$45,000
Median Income
$21,238 per capita
$103,400
Home Value
$435,931 Zillow
$1,500
Median Rent
35.0% income on rent
31°F
Avg Temperature
274 sunny days/yr
871
Violent Crime/100K
2,348 property/100K
C
Overall
2.4 / 5.0
Fair overall score based on economy, affordability, safety and education
D
Economy
1.9 / 5.0
$45,000 median income, 13.4% unemployment
A+
Affordability
5.0 / 5.0
$103,400 home value, $1,500/mo rent
F
Safety
1.0 / 5.0
871 violent crimes/100K (129% above avg)
D
Education
1.7 / 5.0
8.8% bachelor's degree or higher
St. Mary's has a cool climate with an average annual temperature of 31°F (-1°C). Winters average 7°F in January while summers reach 56°F in July. The area gets 274 sunny days per year. Annual precipitation totals 19.7 inches. The area receives 64.0 inches of snow annually. Air quality is rated Good with a median AQI of 21.
Temperature
7°F Jan (-14°C)
56°F Jul (14°C)
| Annual Average | 31.4°F |
| 42% below US avg | |
| January Average | 7°F (-14°C) |
| July Average | 56°F (14°C) |
| Sunny Days | 274 days/yr |
Geography
| Elevation | 486 ft (148 m) |
| Area | 44.6 sq mi (115.5 km²) |
| Population Density | 18/sq mi |
| Coordinates | 62.0628°N, 163.2443°W |
| Timezone | America/Anchorage |
| County | Kusilvak Census Area County |
| Nearest Airport | Ted Stevens Anchorage International (ANC) 439 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 21.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 57.9 / 100 |
| Social Vulnerability | 100.0 / 100 |
| Community Resilience | 5.9 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | No Rating |
| Hail | Very Low |
| Strong Wind | Very Low |
| Winter Weather | Relatively Moderate |
| Lightning | Very Low |
| Ice Storm | Very Low |
| Drought | No Rating |
| Cold Wave | Relatively High |
| Landslide | Relatively Low |
| Coastal Flood | No Rating |
| Volcano | Very Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Nearby Volcanoes
1 volcano within 200 km. Closest: St. Michael (165 km).
| Name | Type | Elevation | Last Eruption | Distance |
| St. Michael | Shield(s) | 715 m (2,346 ft) | Unknown | 165 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 7°F (-14°C) | 0.9 in | Coldest |
| February | 9°F (-13°C) | 0.8 in | |
| March | 13°F (-11°C) | 0.8 in | |
| April | 24°F (-5°C) | 0.7 in | Driest |
| May | 39°F (4°C) | 1.0 in | |
| June | 51°F (10°C) | 1.7 in | |
| July | 56°F (14°C) | 2.4 in | Warmest |
| August | 53°F (12°C) | 4.2 in | Wettest |
| September | 45°F (7°C) | 3.2 in | |
| October | 31°F (-1°C) | 1.7 in | |
| November | 18°F (-8°C) | 1.4 in | |
| December | 9°F (-13°C) | 1.1 in |
St. Mary's has a seasonal temperature swing of 49°F / from 7°F in January to 56°F in July. Total annual precipitation is 19.8 inches, with August being the wettest month (4.2") and April the driest (0.7").