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Kapowsin, WA
Full City Profile · Washington · Lewis County County
3.0
/5.0
B
Good
449
Population
109/sq mi density
$111,295
Median Income
$69,041 per capita
$412,900
Home Value
$591,611 Zillow
50°F
Avg Temperature
253 sunny days/yr
35
Violent Crime/100K
2,231 property/100K
B
Overall
3.0 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.9 / 5.0
$111,295 median income, 2.4% unemployment
A+
Affordability
4.6 / 5.0
$412,900 home value, /mo rent
F
Safety
1.0 / 5.0
35 violent crimes/100K
D
Education
1.7 / 5.0
8.4% bachelor's degree or higher
Kapowsin experiences four distinct seasons with an average annual temperature of 50°F (10°C). Winters average 38°F in January while summers reach 64°F in July. The area gets 253 sunny days per year. Air quality is rated Good with a median AQI of 28.
Temperature
38°F Jan (4°C)
64°F Jul (18°C)
| Annual Average | 50.0°F |
| 7% below US avg | |
| January Average | 38°F (4°C) |
| July Average | 64°F (18°C) |
| Sunny Days | 253 days/yr |
Geography
| Elevation | 644 ft (196 m) |
| Area | 4.1 sq mi (10.7 km²) |
| Population Density | 109/sq mi |
| Coordinates | 46.9684°N, 122.2230°W |
| Timezone | America/Los_Angeles |
| County | Lewis County County |
| Nearest Airport | Olympia Regional (OLM) 32 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 28.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 89.7 / 100 |
| Social Vulnerability | 58.3 / 100 |
| Community Resilience | 45.1 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Relatively Moderate |
| Wildfire | Relatively Low |
| Flood | Relatively Moderate |
| Hail | Very Low |
| Strong Wind | Relatively Low |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively Low |
| Ice Storm | Relatively Low |
| Drought | Very Low |
| Cold Wave | Very Low |
| Landslide | Relatively Moderate |
| Volcano | Relatively Moderate |
| Avalanche | Relatively High |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tsunami History
6 tsunamis recorded within 500 km. Highest wave on record: 250.0 m (820 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1980 | WASHINGTON | Explosion | 250.0 m | 61 | 86 km |
| 1894 | PUYALLUP RIVER DELTA, TACOMA, WA | Meteorological | 3.0 m | 2 | 39 km |
| 1891 | WASHINGTON | Eruption + Earthquake | 2.4 m | — | 150 km |
| 1949 | PUGET SOUND, WA | Meteorological | 2.4 m | — | 44 km |
| 1949 | PUGET SOUND, WA | Eruption + Earthquake | — | 8 | 37 km |
| 1820 | CAMANO ISLAND, WA | Meteorological | — | — | 122 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Nearby Volcanoes
7 volcanoes within 200 km. Closest: Rainier (37 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Rainier | Stratovolcano | 4,392 m (14,409 ft) | 1450 | 37 km |
| St. Helens | Stratovolcano | 2,549 m (8,363 ft) | 2008 | 86 km |
| Adams | Stratovolcano | 3,742 m (12,277 ft) | 950 | 102 km |
| Indian Heaven | Shield(s) | 1,806 m (5,925 ft) | -6250 | 120 km |
| West Crater | Volcanic field | 1,329 m (4,360 ft) | -5750 | 122 km |
| Glacier Peak | Stratovolcano | 3,213 m (10,541 ft) | 1700 | 152 km |
| Hood | Stratovolcano | 3,426 m (11,240 ft) | 1866 | 182 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 38°F (4°C) | 8.3 in | Coldest |
| February | 40°F (5°C) | 6.3 in | |
| March | 43°F (6°C) | 5.6 in | |
| April | 47°F (8°C) | 4.7 in | |
| May | 52°F (11°C) | 3.3 in | |
| June | 57°F (14°C) | 2.8 in | |
| July | 64°F (18°C) | 1.4 in | Warmest, Driest |
| August | 63°F (17°C) | 1.7 in | |
| September | 58°F (14°C) | 2.8 in | |
| October | 50°F (10°C) | 4.8 in | |
| November | 42°F (6°C) | 8.7 in | Wettest |
| December | 38°F (4°C) | 8.5 in |
Kapowsin has a seasonal temperature swing of 26°F / from 38°F in January to 64°F in July. Total annual precipitation is 58.9 inches, with November being the wettest month (8.7") and July the driest (1.4").