All Countries
Tonsina, AK
Full City Profile · Alaska · Chugach Census Area County
2.4
/5.0
C
Fair
41
Population
0/sq mi density
28°F
Avg Temperature
274 sunny days/yr
349
Violent Crime/100K
1,265 property/100K
C
Overall
2.4 / 5.0
Fair overall score based on economy, affordability, safety and education
F
Safety
1.0 / 5.0
349 violent crimes/100K
B+
Education
3.8 / 5.0
34.5% bachelor's degree or higher
Tonsina has a cool climate with an average annual temperature of 28°F (-2°C). Winters average -2°F in January while summers reach 57°F in July. The area gets 274 sunny days per year. Annual precipitation totals 13.3 inches. The area receives 71.8 inches of snow annually. Air quality is rated Good with a median AQI of 21.
Temperature
-2°F Jan (-19°C)
57°F Jul (14°C)
| Annual Average | 27.6°F |
| 49% below US avg | |
| January Average | -2°F (-19°C) |
| July Average | 57°F (14°C) |
| Sunny Days | 274 days/yr |
Geography
| Elevation | 3,664 ft (1,117 m) |
| Area | 159.0 sq mi (411.8 km²) |
| Population Density | 0/sq mi |
| Coordinates | 61.5303°N, 145.1101°W |
| Timezone | America/Anchorage |
| County | Chugach Census Area County |
| Nearest Airport | Ted Stevens Anchorage International (ANC) 164 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 21.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 19.6 / 100 |
| Social Vulnerability | 10.6 / 100 |
| Community Resilience | 24.1 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Very Low |
| Hail | Very Low |
| Strong Wind | No Rating |
| Winter Weather | Relatively Low |
| Lightning | Very Low |
| Ice Storm | Very Low |
| Drought | No Rating |
| Cold Wave | Relatively Low |
| Landslide | Relatively Moderate |
| Coastal Flood | Very Low |
| Tsunami | Very Low |
| Volcano | No Rating |
| Avalanche | Very High |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tsunami History
1 tsunami recorded within 500 km. Highest wave on record: 51.8 m (170 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1964 | PRINCE WILLIAM SOUND, AK | Eruption + Earthquake | 51.8 m | 139 | 138 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Nearby Volcanoes
1 volcano within 200 km. Closest: Wrangell (78 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Wrangell | Shield | 4,278 m (14,035 ft) | 1912 | 78 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | -2°F (-19°C) | 1.1 in | Coldest |
| February | 7°F (-14°C) | 1.4 in | |
| March | 14°F (-10°C) | 0.9 in | |
| April | 27°F (-3°C) | 0.6 in | Driest |
| May | 39°F (4°C) | 0.9 in | |
| June | 49°F (9°C) | 2.1 in | |
| July | 57°F (14°C) | 2.5 in | Warmest, Wettest |
| August | 50°F (10°C) | 2.0 in | |
| September | 41°F (5°C) | 1.9 in | |
| October | 27°F (-3°C) | 1.7 in | |
| November | 9°F (-13°C) | 1.6 in | |
| December | 3°F (-16°C) | 1.7 in |
Tonsina has a seasonal temperature swing of 59°F / from -2°F in January to 57°F in July. Total annual precipitation is 18.4 inches, with July being the wettest month (2.5") and April the driest (0.6").