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Seneca, OR
Full City Profile · Oregon · Grant County County
3.1
/5.0
B
Good
119
Population
149/sq mi density
$76,250
Median Income
$35,875 per capita
$157,100
Home Value
$308,245 Zillow
41°F
Avg Temperature
311 sunny days/yr
59
Violent Crime/100K
2,239 property/100K
B
Overall
3.1 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.5 / 5.0
$76,250 median income, 0.0% unemployment
A+
Affordability
5.0 / 5.0
$157,100 home value, /mo rent
F
Safety
1.0 / 5.0
59 violent crimes/100K
D
Education
1.7 / 5.0
9.2% bachelor's degree or higher
Seneca has a cool climate with an average annual temperature of 41°F (5°C). Winters average 24°F in January while summers reach 60°F in July. The area gets 311 sunny days per year. Annual precipitation totals 13.7 inches. Air quality is rated Good with a median AQI of 32.
Temperature
24°F Jan (-5°C)
60°F Jul (16°C)
| Annual Average | 40.5°F |
| 25% below US avg | |
| January Average | 24°F (-5°C) |
| July Average | 60°F (16°C) |
| Sunny Days | 311 days/yr |
Geography
| Elevation | 4,661 ft (1,421 m) |
| Area | 0.8 sq mi (2.0 km²) |
| Population Density | 149/sq mi |
| Coordinates | 44.1352°N, 118.9763°W |
| Timezone | America/Los_Angeles |
| County | Grant County County |
| Nearest Airport | Grant County Regional/Ogilvie Field (JDA) 19 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 32.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 32.1 / 100 |
| Social Vulnerability | 80.0 / 100 |
| Community Resilience | 30.3 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Very Low |
| Wildfire | Relatively Moderate |
| Flood | Relatively Low |
| Hail | Very Low |
| Strong Wind | Very Low |
| Heat Wave | Very Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively Moderate |
| Ice Storm | Very Low |
| Drought | Very Low |
| Cold Wave | Very Low |
| Landslide | Relatively Low |
| Volcano | Very Low |
| Avalanche | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Nearby Volcanoes
4 volcanoes within 200 km. Closest: Diamond Craters (117 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Diamond Craters | Volcanic field | 1,435 m (4,708 ft) | -5610 | 117 km |
| Jordan Craters | Volcanic field | 1,473 m (4,833 ft) | -1250 | 164 km |
| Devils Garden | Volcanic field | 1,698 m (5,571 ft) | Unknown | 166 km |
| Newberry | Shield | 2,434 m (7,986 ft) | 690 | 186 km |
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 24°F (-5°C) | 1.6 in | Coldest |
| February | 27°F (-3°C) | 1.2 in | |
| March | 33°F (0°C) | 1.3 in | |
| April | 39°F (4°C) | 1.1 in | |
| May | 46°F (8°C) | 1.3 in | |
| June | 53°F (12°C) | 1.1 in | |
| July | 60°F (16°C) | 0.6 in | Driest |
| August | 61°F (16°C) | 0.9 in | Warmest |
| September | 53°F (12°C) | 0.7 in | |
| October | 44°F (7°C) | 1.0 in | |
| November | 34°F (1°C) | 1.7 in | |
| December | 25°F (-4°C) | 1.9 in | Wettest |
Seneca has a seasonal temperature swing of 37°F / from 24°F in January to 61°F in August. Total annual precipitation is 14.2 inches, with December being the wettest month (1.9") and July the driest (0.6").