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Jamestown, WA
Full City Profile · Washington · San Juan County County
3.8
/5.0
B+
Good
409
Population
705/sq mi density
$111,111
Median Income
$51,733 per capita
$468,300
Home Value
$555,387 Zillow
49°F
Avg Temperature
274 sunny days/yr
120
Violent Crime/100K
5,507 property/100K
B+
Overall
3.8 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.9 / 5.0
$111,111 median income, 2.5% unemployment
A
Affordability
4.3 / 5.0
$468,300 home value, /mo rent
F
Safety
1.0 / 5.0
120 violent crimes/100K
A+
Education
5.0 / 5.0
64.7% bachelor's degree or higher
Jamestown experiences four distinct seasons with an average annual temperature of 49°F (9°C). Winters average 39°F in January while summers reach 61°F in July. The area gets 274 sunny days per year. Annual precipitation totals 16.9 inches. The area receives 1.4 inches of snow annually. Air quality is rated Good with a median AQI of 28.
Temperature
39°F Jan (4°C)
61°F Jul (16°C)
| Annual Average | 48.9°F |
| 9% below US avg | |
| January Average | 39°F (4°C) |
| July Average | 61°F (16°C) |
| Sunny Days | 274 days/yr |
Geography
| Elevation | 26 ft (8 m) |
| Area | 0.2 sq mi (0.6 km²) |
| Population Density | 705/sq mi |
| Coordinates | 48.1228°N, 123.0910°W |
| Timezone | America/Los_Angeles |
| County | San Juan County County |
| Nearest Airport | Jefferson County International (TWD) 14 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 28.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 35.4 / 100 |
| Social Vulnerability | 61.0 / 100 |
| Community Resilience | 95.8 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Very Low |
| Strong Wind | Very Low |
| Heat Wave | Very Low |
| Winter Weather | Relatively Low |
| Lightning | Very Low |
| Ice Storm | Very Low |
| Drought | No Rating |
| Cold Wave | Relatively Low |
| Landslide | Very Low |
| Coastal Flood | Relatively Low |
| Tsunami | Very Low |
| Volcano | 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 | 105 km |
| 1891 | WASHINGTON | Eruption + Earthquake | 2.4 m | — | 33 km |
| 1949 | PUGET SOUND, WA | Meteorological | 2.4 m | — | 101 km |
| 1949 | PUGET SOUND, WA | Eruption + Earthquake | — | 8 | 112 km |
| 1820 | CAMANO ISLAND, WA | Meteorological | — | — | 55 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Nearby Volcanoes
4 volcanoes within 200 km. Closest: Baker (119 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Baker | Stratovolcano(es) | 3,285 m (10,778 ft) | 1880 | 119 km |
| Glacier Peak | Stratovolcano | 3,213 m (10,541 ft) | 1700 | 147 km |
| Rainier | Stratovolcano | 4,392 m (14,409 ft) | 1450 | 173 km |
| Garibaldi | Stratovolcano | 2,678 m (8,786 ft) | -8060 | 192 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 39°F (4°C) | 5.2 in | |
| February | 41°F (5°C) | 3.9 in | |
| March | 43°F (6°C) | 3.5 in | |
| April | 47°F (8°C) | 2.3 in | |
| May | 52°F (11°C) | 1.9 in | |
| June | 56°F (14°C) | 1.5 in | |
| July | 61°F (16°C) | 0.9 in | Driest |
| August | 61°F (16°C) | 1.1 in | Warmest |
| September | 57°F (14°C) | 1.4 in | |
| October | 50°F (10°C) | 3.0 in | |
| November | 43°F (6°C) | 5.6 in | |
| December | 39°F (4°C) | 5.9 in | Coldest, Wettest |
Jamestown has a seasonal temperature swing of 23°F / from 39°F in December to 61°F in August. Total annual precipitation is 36.3 inches, with December being the wettest month (5.9") and July the driest (0.9").