All Countries
Arlington, WA
Full City Profile · Washington · Island County County
2.9
/5.0
C+
Fair
20,599
Population
2,066/sq mi density
$84,919
Median Income
$43,023 per capita
$492,600
Home Value
$658,913 Zillow
$1,764
Median Rent
31.1% income on rent
49°F
Avg Temperature
233 sunny days/yr
235
Violent Crime/100K
3,507 property/100K
C+
Overall
2.9 / 5.0
Fair overall score based on economy, affordability, safety and education
A+
Economy
4.6 / 5.0
$84,919 median income, 2.3% unemployment
B
Affordability
3.4 / 5.0
$492,600 home value, $1,764/mo rent
F
Safety
1.0 / 5.0
235 violent crimes/100K
C+
Education
2.6 / 5.0
20.3% bachelor's degree or higher
Arlington experiences four distinct seasons with an average annual temperature of 49°F (9°C). Winters average 38°F in January while summers reach 63°F in July. The area gets 233 sunny days per year. Annual precipitation totals 49.0 inches. The area receives 4.3 inches of snow annually. Air quality is rated Good with a median AQI of 28.
Temperature
38°F Jan (3°C)
63°F Jul (17°C)
| Annual Average | 49.1°F |
| 9% below US avg | |
| January Average | 38°F (3°C) |
| July Average | 63°F (17°C) |
| Sunny Days | 233 days/yr |
Geography
| Elevation | 147 ft (45 m) |
| Area | 3.8 sq mi (9.7 km²) |
| Population Density | 2,066/sq mi |
| Coordinates | 48.1704°N, 122.1446°W |
| Timezone | America/Los_Angeles |
| County | Island County County |
| Nearest Airport | Seattle Paine Field International (PAE) 20 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 28.0 |
| Rating | Good |
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
6 tsunamis recorded within 500 km. Highest wave on record: 38.0 m (125 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 2007 | CHEHALIS LAKE, CHILLIWACK | Meteorological | 38.0 m | — | 145 km |
| 1894 | PUYALLUP RIVER DELTA, TACOMA, WA | Meteorological | 3.0 m | 2 | 101 km |
| 1891 | WASHINGTON | Eruption + Earthquake | 2.4 m | — | 102 km |
| 1949 | PUGET SOUND, WA | Meteorological | 2.4 m | — | 101 km |
| 1949 | PUGET SOUND, WA | Eruption + Earthquake | — | 8 | 117 km |
| 1820 | CAMANO ISLAND, WA | Meteorological | — | — | 20 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Nearby Volcanoes
4 volcanoes within 200 km. Closest: Baker (72 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Baker | Stratovolcano(es) | 3,285 m (10,778 ft) | 1880 | 72 km |
| Glacier Peak | Stratovolcano | 3,213 m (10,541 ft) | 1700 | 77 km |
| Rainier | Stratovolcano | 4,392 m (14,409 ft) | 1450 | 149 km |
| Garibaldi | Stratovolcano | 2,678 m (8,786 ft) | -8060 | 197 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 38°F (3°C) | 7.1 in | |
| February | 41°F (5°C) | 5.2 in | |
| March | 43°F (6°C) | 5.4 in | |
| April | 47°F (9°C) | 4.4 in | |
| May | 53°F (12°C) | 3.4 in | |
| June | 58°F (14°C) | 2.8 in | |
| July | 63°F (17°C) | 1.7 in | Driest |
| August | 63°F (17°C) | 1.8 in | Warmest |
| September | 58°F (14°C) | 3.0 in | |
| October | 50°F (10°C) | 4.8 in | |
| November | 43°F (6°C) | 7.8 in | Wettest |
| December | 38°F (3°C) | 7.4 in | Coldest |
Arlington has a seasonal temperature swing of 25°F / from 38°F in December to 63°F in August. Total annual precipitation is 54.7 inches, with November being the wettest month (7.8") and July the driest (1.7").