Petersburg, AK
Full City Profile · Alaska · Wrangell City and Borough County
3.2
/5.0
B
Good
3,346
Population
76/sq mi density
$76,466
Median Income
$41,952 per capita
$298,500
Home Value
$392,893 Zillow
$1,208
Median Rent
29.3% income on rent
43°F
Avg Temperature
202
Violent Crime/100K
606 property/100K
B
Overall
3.2 / 5.0
Good overall score based on economy, affordability, safety and education
A
Economy
4.3 / 5.0
$76,466 median income, 3.3% unemployment
A
Affordability
4.5 / 5.0
$298,500 home value, $1,208/mo rent
F
Safety
1.0 / 5.0
202 violent crimes/100K
B
Education
3.2 / 5.0
27.1% bachelor's degree or higher
Petersburg has a cool climate with an average annual temperature of 43°F (6°C). Winters average 31°F in January while summers reach 56°F in July. Annual precipitation totals 110.2 inches. The area receives 85.6 inches of snow annually.
Temperature
31°F Jan (-1°C)
56°F Jul (14°C)
| Annual Average | 43.0°F |
| 20% below US avg | |
| January Average | 31°F (-1°C) |
| July Average | 56°F (14°C) |
Geography
| Elevation | 700 ft (213 m) |
| Area | 44.2 sq mi (114.4 km²) |
| Population Density | 76/sq mi |
| Coordinates | 56.7569°N, 132.8749°W |
| Timezone | America/Anchorage |
| County | Wrangell City and Borough County |
| Nearest Airport | Ketchikan International (KTN) 107 miles away |
Precipitation & Snow
Air Quality
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 0.1 / 100 |
| Social Vulnerability | 67.6 / 100 |
| Community Resilience | 31.6 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Very Low |
| Hail | No Rating |
| Strong Wind | No Rating |
| Winter Weather | Very Low |
| Lightning | Very Low |
| Ice Storm | Very Low |
| Drought | No Rating |
| Cold Wave | Very Low |
| Landslide | Relatively Low |
| Coastal Flood | No Rating |
| Volcano | Very Low |
| Avalanche | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tsunami History
1 tsunami recorded within 500 km. Highest wave on record: 470.0 m (1,542 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 2025 | TRACY ARM, AK | Meteorological | 470.0 m | - | 121 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Nearby Volcanoes
6 volcanoes within 200 km. Closest: Hoodoo Mountain (97 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Hoodoo Mountain | Subglacial | 1,850 m (6,070 ft) | -7050 | 97 km |
| Iskut-Unuk River Cones | Pyroclastic cone(s) | 1,880 m (6,168 ft) | 1800 | 143 km |
| Spectrum Range | Shield | 2,430 m (7,972 ft) | Unknown | 152 km |
| Tlevak Strait-Suemez Is. | Volcanic field | 50 m (164 ft) | Unknown | 170 km |
| Edziza | Stratovolcano | 2,786 m (9,140 ft) | 950 | 172 km |
| Edgecumbe | Stratovolcano(es) | 970 m (3,182 ft) | -2220 | 178 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 31°F (-1°C) | 11.4 in | Coldest |
| February | 32°F (0°C) | 7.6 in | |
| March | 35°F (2°C) | 7.6 in | |
| April | 41°F (5°C) | 6.7 in | |
| May | 49°F (9°C) | 5.9 in | |
| June | 54°F (12°C) | 5.0 in | Driest |
| July | 56°F (14°C) | 5.6 in | Warmest |
| August | 56°F (13°C) | 8.2 in | |
| September | 51°F (10°C) | 14.4 in | Wettest |
| October | 43°F (6°C) | 13.8 in | |
| November | 36°F (2°C) | 12.3 in | |
| December | 32°F (-0°C) | 11.8 in |
Petersburg has a seasonal temperature swing of 25°F / from 31°F in January to 56°F in July. Total annual precipitation is 110.2 inches, with September being the wettest month (14.4") and June the driest (5.0").