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Deep River, WA
Full City Profile · Washington · Wahkiakum County County
2.7
/5.0
C+
Fair
197
Population
15/sq mi density
$41,827
Median Income
$50,672 per capita
$256,300
Home Value
$380,890 Zillow
51°F
Avg Temperature
226 sunny days/yr
111
Violent Crime/100K
1,672 property/100K
C+
Overall
2.7 / 5.0
Fair overall score based on economy, affordability, safety and education
B+
Economy
3.8 / 5.0
$41,827 median income, 0.0% unemployment
B
Affordability
3.2 / 5.0
$256,300 home value, /mo rent
F
Safety
1.0 / 5.0
111 violent crimes/100K
C+
Education
2.6 / 5.0
20.1% bachelor's degree or higher
Deep River experiences four distinct seasons with an average annual temperature of 51°F (11°C). Winters average 41°F in January while summers reach 61°F in July. The area gets 226 sunny days per year. Annual precipitation totals 112.2 inches. The area receives 1.7 inches of snow annually. Air quality is rated Good with a median AQI of 28.
Temperature
41°F Jan (5°C)
61°F Jul (16°C)
| Annual Average | 50.7°F |
| 6% below US avg | |
| January Average | 41°F (5°C) |
| July Average | 61°F (16°C) |
| Sunny Days | 226 days/yr |
Geography
| Elevation | 113 ft (34 m) |
| Area | 5.2 sq mi (13.5 km²) |
| Population Density | 15/sq mi |
| Coordinates | 46.3536°N, 123.7050°W |
| Timezone | America/Los_Angeles |
| County | Wahkiakum County County |
| Nearest Airport | Astoria Regional (AST) 14 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 28.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 19.3 / 100 |
| Social Vulnerability | 60.8 / 100 |
| Community Resilience | 40.0 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Very Low |
| Hail | Very Low |
| Strong Wind | Very Low |
| Heat Wave | Relatively Low |
| Winter Weather | Very Low |
| Lightning | Very Low |
| Ice Storm | Very Low |
| Drought | No Rating |
| Cold Wave | Very Low |
| Landslide | Relatively Low |
| Coastal Flood | Relatively Moderate |
| Tsunami | Relatively Low |
| Volcano | Very Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tsunami History
4 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 | 118 km |
| 1894 | PUYALLUP RIVER DELTA, TACOMA, WA | Meteorological | 3.0 m | 2 | 141 km |
| 1949 | PUGET SOUND, WA | Meteorological | 2.4 m | — | 138 km |
| 1949 | PUGET SOUND, WA | Eruption + Earthquake | — | 8 | 123 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Nearby Volcanoes
6 volcanoes within 200 km. Closest: St. Helens (118 km).
| Name | Type | Elevation | Last Eruption | Distance |
| St. Helens | Stratovolcano | 2,549 m (8,363 ft) | 2008 | 118 km |
| West Crater | Volcanic field | 1,329 m (4,360 ft) | -5750 | 136 km |
| Indian Heaven | Shield(s) | 1,806 m (5,925 ft) | -6250 | 153 km |
| Rainier | Stratovolcano | 4,392 m (14,409 ft) | 1450 | 159 km |
| Adams | Stratovolcano | 3,742 m (12,277 ft) | 950 | 171 km |
| Hood | Stratovolcano | 3,426 m (11,240 ft) | 1866 | 190 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 41°F (5°C) | 14.2 in | |
| February | 42°F (6°C) | 11.6 in | |
| March | 44°F (7°C) | 10.4 in | |
| April | 47°F (8°C) | 7.1 in | |
| May | 51°F (11°C) | 4.6 in | |
| June | 56°F (13°C) | 3.3 in | |
| July | 61°F (16°C) | 1.7 in | Warmest, Driest |
| August | 60°F (16°C) | 2.0 in | |
| September | 58°F (14°C) | 4.0 in | |
| October | 51°F (11°C) | 8.2 in | |
| November | 44°F (7°C) | 14.3 in | |
| December | 40°F (5°C) | 15.1 in | Coldest, Wettest |
Deep River has a seasonal temperature swing of 21°F / from 40°F in December to 61°F in July. Total annual precipitation is 96.3 inches, with December being the wettest month (15.1") and July the driest (1.7").