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Cosmopolis, WA
Full City Profile · Washington · Pacific County County
3.5
/5.0
B+
Good
2,301
Population
1,655/sq mi density
$80,132
Median Income
$32,341 per capita
$280,700
Home Value
$322,552 Zillow
$913
Median Rent
30.4% income on rent
51°F
Avg Temperature
226 sunny days/yr
B+
Overall
3.5 / 5.0
Good overall score based on economy, affordability, safety and education
A
Economy
4.0 / 5.0
$80,132 median income, 5.7% unemployment
A+
Affordability
4.7 / 5.0
$280,700 home value, $913/mo rent
C+
Safety
2.5 / 5.0
0 violent crimes/100K
C+
Education
2.8 / 5.0
21.9% bachelor's degree or higher
Cosmopolis experiences four distinct seasons with an average annual temperature of 51°F (11°C). Winters average 43°F in January while summers reach 61°F in July. The area gets 226 sunny days per year. Annual precipitation totals 84.9 inches. The area receives 0.5 inches of snow annually. Air quality is rated Good with a median AQI of 28.
Temperature
43°F Jan (6°C)
61°F Jul (16°C)
| Annual Average | 51.3°F |
| 5% below US avg | |
| January Average | 43°F (6°C) |
| July Average | 61°F (16°C) |
| Sunny Days | 226 days/yr |
Geography
| Elevation | 24 ft (7 m) |
| Area | 0.6 sq mi (1.6 km²) |
| Population Density | 1,655/sq mi |
| Coordinates | 46.9543°N, 123.7729°W |
| Timezone | America/Los_Angeles |
| County | Pacific County County |
| Nearest Airport | Olympia Regional (OLM) 41 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 28.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 92.8 / 100 |
| Social Vulnerability | 64.4 / 100 |
| Community Resilience | 69.6 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Relatively Moderate |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Very Low |
| Strong Wind | Very Low |
| Heat Wave | Relatively Low |
| Winter Weather | Very Low |
| Lightning | Very Low |
| Ice Storm | Very Low |
| Drought | Very Low |
| Cold Wave | Very Low |
| Landslide | Relatively Low |
| Coastal Flood | Relatively Moderate |
| Tsunami | Very High |
| Volcano | Very Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tsunami History
5 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 | 148 km |
| 1894 | PUYALLUP RIVER DELTA, TACOMA, WA | Meteorological | 3.0 m | 2 | 107 km |
| 1891 | WASHINGTON | Eruption + Earthquake | 2.4 m | — | 118 km |
| 1949 | PUGET SOUND, WA | Meteorological | 2.4 m | — | 101 km |
| 1949 | PUGET SOUND, WA | Eruption + Earthquake | — | 8 | 91 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Nearby Volcanoes
5 volcanoes within 200 km. Closest: St. Helens (148 km).
| Name | Type | Elevation | Last Eruption | Distance |
| St. Helens | Stratovolcano | 2,549 m (8,363 ft) | 2008 | 148 km |
| Rainier | Stratovolcano | 4,392 m (14,409 ft) | 1450 | 153 km |
| West Crater | Volcanic field | 1,329 m (4,360 ft) | -5750 | 176 km |
| Indian Heaven | Shield(s) | 1,806 m (5,925 ft) | -6250 | 188 km |
| Adams | Stratovolcano | 3,742 m (12,277 ft) | 950 | 193 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 43°F (6°C) | 13.2 in | |
| February | 42°F (6°C) | 10.9 in | |
| March | 45°F (7°C) | 9.6 in | |
| April | 48°F (9°C) | 6.5 in | |
| May | 53°F (11°C) | 4.0 in | |
| June | 57°F (14°C) | 2.8 in | |
| July | 61°F (16°C) | 1.6 in | Warmest, Driest |
| August | 61°F (16°C) | 1.9 in | |
| September | 58°F (15°C) | 3.6 in | |
| October | 51°F (11°C) | 7.6 in | |
| November | 45°F (7°C) | 13.0 in | |
| December | 40°F (5°C) | 14.1 in | Coldest, Wettest |
Cosmopolis has a seasonal temperature swing of 21°F / from 40°F in December to 61°F in July. Total annual precipitation is 88.7 inches, with December being the wettest month (14.1") and July the driest (1.6").