Alder, WA
Full City Profile · Washington · Lewis County County
5.0
/5.0
A+
Excellent
77
Population
24/sq mi density
50°F
Avg Temperature
A+
Overall
5.0 / 5.0
Strong
A+
Education
5.0 / 5.0
0.0% bachelor's degree or higher
Alder experiences four distinct seasons with an average annual temperature of 50°F (10°C). Winters average 38°F in January while summers reach 64°F in July. Annual precipitation totals 81.6 inches. The area receives 143.0 inches of snow annually. Air quality is rated Good with a median AQI of 22.
Temperature
38°F Jan (3°C)
64°F Jul (18°C)
| Annual Average | 50.0°F |
| 7% below US avg | |
| January Average | 38°F (3°C) |
| July Average | 64°F (18°C) |
Geography
| Elevation | 1,597 ft (487 m) |
| Area | 1.3 sq mi (3.2 km²) |
| Population Density | 24/sq mi |
| Coordinates | 46.7820°N, 122.2612°W |
| Timezone | America/Los_Angeles |
| County | Lewis County County |
| Nearest Airport | Olympia Regional (OLM) 33 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 22.0 |
| Rating | Good |
| Good Days % | 93.3% |
| Unhealthy Days | 1 |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 89.7 / 100 |
| Social Vulnerability | 58.3 / 100 |
| Community Resilience | 45.1 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Relatively Moderate |
| Wildfire | Relatively Low |
| Flood | Relatively Moderate |
| Hail | Very Low |
| Strong Wind | Relatively Low |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively Low |
| Ice Storm | Relatively Low |
| Drought | Very Low |
| Cold Wave | Very Low |
| Landslide | Relatively Moderate |
| Volcano | Relatively Moderate |
| Avalanche | Relatively High |
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 | 65 km |
| 1894 | PUYALLUP RIVER DELTA, TACOMA, WA | Meteorological | 3.0 m | 2 | 58 km |
| 1949 | PUGET SOUND, WA | Meteorological | 2.4 m | - | 61 km |
| 1949 | PUGET SOUND, WA | Eruption + Earthquake | - | 8 | 51 km |
| 1820 | CAMANO ISLAND, WA | Meteorological | - | - | 142 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Nearby Volcanoes
7 volcanoes within 200 km. Closest: Rainier (39 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Rainier | Stratovolcano | 4,392 m (14,409 ft) | 1450 | 39 km |
| St. Helens | Stratovolcano | 2,549 m (8,363 ft) | 2008 | 65 km |
| Adams | Stratovolcano | 3,742 m (12,277 ft) | 950 | 87 km |
| Indian Heaven | Shield(s) | 1,806 m (5,925 ft) | -6250 | 101 km |
| West Crater | Volcanic field | 1,329 m (4,360 ft) | -5750 | 101 km |
| Hood | Stratovolcano | 3,426 m (11,240 ft) | 1866 | 163 km |
| Glacier Peak | Stratovolcano | 3,213 m (10,541 ft) | 1700 | 171 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 38°F (3°C) | 12.1 in | Wettest |
| February | 40°F (5°C) | 10.1 in | |
| March | 44°F (6°C) | 9.7 in | |
| April | 48°F (9°C) | 6.5 in | |
| May | 55°F (13°C) | 4.3 in | |
| June | 59°F (15°C) | 3.0 in | |
| July | 64°F (18°C) | 1.0 in | Warmest, Driest |
| August | 64°F (18°C) | 1.4 in | |
| September | 58°F (15°C) | 3.0 in | |
| October | 50°F (10°C) | 7.0 in | |
| November | 42°F (5°C) | 11.6 in | |
| December | 38°F (3°C) | 12.0 in | Coldest |
Alder has a seasonal temperature swing of 26°F / from 38°F in December to 64°F in July. Total annual precipitation is 81.6 inches, with January being the wettest month (12.1") and July the driest (1.0").