Marrowstone, WA
Full City Profile · Washington · Island County County
4.2
/5.0
A
Great
982
Population
156/sq mi density
$93,125
Median Income
$60,419 per capita
$561,400
Home Value
$643,783 Zillow
$1,382
Median Rent
20.2% income on rent
52°F
Avg Temperature
A
Overall
4.2 / 5.0
Strong
A
Economy
4.3 / 5.0
$93,125 median income, 0.0% unemployment
B
Affordability
3.3 / 5.0
$561,400 home value, $1,382/mo rent
A+
Education
5.0 / 5.0
52.1% bachelor's degree or higher
Marrowstone experiences four distinct seasons with an average annual temperature of 52°F (11°C). Winters average 42°F in January while summers reach 63°F in July. Annual precipitation totals 19.1 inches. The area receives 0.6 inches of snow annually.
Temperature
42°F Jan (6°C)
63°F Jul (17°C)
| Annual Average | 51.9°F |
| 4% below US avg | |
| January Average | 42°F (6°C) |
| July Average | 63°F (17°C) |
Geography
| Elevation | 137 ft (42 m) |
| Area | 2.4 sq mi (6.3 km²) |
| Population Density | 156/sq mi |
| Coordinates | 48.0320°N, 122.6840°W |
| Timezone | America/Los_Angeles |
| County | Island County County |
| Nearest Airport | Jefferson County International (TWD) 6 miles away |
Precipitation & Snow
Air Quality
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 78.0 / 100 |
| Social Vulnerability | 36.8 / 100 |
| Community Resilience | 80.4 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Relatively Moderate |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Very Low |
| Strong Wind | Very Low |
| Heat Wave | Very Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively Low |
| Ice Storm | Relatively Moderate |
| Drought | No Rating |
| Cold Wave | Relatively Low |
| Landslide | Relatively High |
| Coastal Flood | Relatively Moderate |
| Tsunami | Very Low |
| Volcano | Relatively 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: 3.0 m (10 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1894 | PUYALLUP RIVER DELTA, TACOMA, WA | Meteorological | 3.0 m | 2 | 85 km |
| 1891 | WASHINGTON | Eruption + Earthquake | 2.4 m | - | 61 km |
| 1949 | PUGET SOUND, WA | Meteorological | 2.4 m | - | 82 km |
| 1949 | PUGET SOUND, WA | Eruption + Earthquake | - | 8 | 96 km |
| 1820 | CAMANO ISLAND, WA | Meteorological | - | - | 24 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Nearby Volcanoes
3 volcanoes within 200 km. Closest: Baker (105 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Baker | Stratovolcano(es) | 3,285 m (10,778 ft) | 1880 | 105 km |
| Glacier Peak | Stratovolcano | 3,213 m (10,541 ft) | 1700 | 117 km |
| Rainier | Stratovolcano | 4,392 m (14,409 ft) | 1450 | 148 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 42°F (6°C) | 2.2 in | |
| February | 43°F (6°C) | 1.6 in | |
| March | 46°F (8°C) | 1.9 in | |
| April | 50°F (10°C) | 1.5 in | |
| May | 55°F (13°C) | 1.5 in | |
| June | 59°F (15°C) | 1.4 in | |
| July | 63°F (17°C) | 0.7 in | |
| August | 63°F (17°C) | 0.5 in | Warmest, Driest |
| September | 60°F (15°C) | 1.1 in | |
| October | 52°F (11°C) | 1.6 in | |
| November | 46°F (8°C) | 2.4 in | |
| December | 42°F (5°C) | 2.6 in | Coldest, Wettest |
Marrowstone has a seasonal temperature swing of 22°F / from 42°F in December to 63°F in August. Total annual precipitation is 19.1 inches, with December being the wettest month (2.6") and August the driest (0.5").