All Countries
Alsea, OR
Full City Profile · Oregon · Benton County County
3.0
/5.0
B
Good
129
Population
806/sq mi density
50°F
Avg Temperature
251 sunny days/yr
22
Violent Crime/100K
1,619 property/100K
B
Overall
3.0 / 5.0
Good overall score based on economy, affordability, safety and education
F
Safety
1.0 / 5.0
22 violent crimes/100K
A+
Education
5.0 / 5.0
0.0% bachelor's degree or higher
Alsea experiences four distinct seasons with an average annual temperature of 50°F (10°C). Winters average 41°F in January while summers reach 62°F in July. The area gets 251 sunny days per year. Annual precipitation totals 91.9 inches. The area receives 0.8 inches of snow annually. Air quality is rated Good with a median AQI of 32.
Temperature
41°F Jan (5°C)
62°F Jul (17°C)
| Annual Average | 50.4°F |
| 7% below US avg | |
| January Average | 41°F (5°C) |
| July Average | 62°F (17°C) |
| Sunny Days | 251 days/yr |
Geography
| Elevation | 297 ft (91 m) |
| Area | 0.2 sq mi (0.4 km²) |
| Population Density | 806/sq mi |
| Coordinates | 44.3818°N, 123.5958°W |
| Timezone | America/Los_Angeles |
| County | Benton County County |
| Nearest Airport | Mahlon Sweet Field (EUG) 26 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 32.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 84.4 / 100 |
| Social Vulnerability | 18.5 / 100 |
| Community Resilience | 97.0 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Relatively Moderate |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Very Low |
| Strong Wind | Very Low |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively Low |
| Lightning | Relatively Low |
| Ice Storm | Relatively Low |
| Drought | Very Low |
| Cold Wave | Very Low |
| Landslide | Relatively Moderate |
| Coastal Flood | No Rating |
| Volcano | Very Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tsunami History
1 tsunami recorded within 500 km.
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1700 | CASCADIA SUBDUCTION ZONE | Earthquake | — | 2 | 131 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Nearby Volcanoes
8 volcanoes within 200 km. Closest: Sand Mountain Field (132 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Sand Mountain Field | Pyroclastic cone(s) | 1,664 m (5,459 ft) | -950 | 132 km |
| Belknap | Shield(s) | 2,095 m (6,873 ft) | 480 | 140 km |
| Jefferson | Stratovolcano | 3,199 m (10,495 ft) | 950 | 146 km |
| Three Sisters | Complex | 3,159 m (10,364 ft) | 440 | 148 km |
| Bachelor | Stratovolcano | 2,763 m (9,065 ft) | -5800 | 159 km |
| Davis Lake | Volcanic field | 2,163 m (7,096 ft) | -2790 | 168 km |
| Cinnamon Butte | Pyroclastic cone(s) | 1,956 m (6,417 ft) | Unknown | 174 km |
| Hood | Stratovolcano | 3,426 m (11,240 ft) | 1866 | 186 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 41°F (5°C) | 14.3 in | |
| February | 42°F (6°C) | 11.4 in | |
| March | 44°F (7°C) | 10.4 in | |
| April | 47°F (8°C) | 6.3 in | |
| May | 51°F (11°C) | 4.0 in | |
| June | 56°F (14°C) | 2.5 in | |
| July | 62°F (17°C) | 0.9 in | Warmest, Driest |
| August | 62°F (17°C) | 1.4 in | |
| September | 59°F (15°C) | 3.0 in | |
| October | 52°F (11°C) | 6.3 in | |
| November | 44°F (7°C) | 14.0 in | |
| December | 40°F (4°C) | 15.8 in | Coldest, Wettest |
Alsea has a seasonal temperature swing of 22°F / from 40°F in December to 62°F in July. Total annual precipitation is 90.2 inches, with December being the wettest month (15.8") and July the driest (0.9").