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Seneca, SD
Full City Profile · South Dakota · Faulk County County
4.4
/5.0
A
Great
26
Population
62/sq mi density
$40,750
Median Income
$23,423 per capita
$28,500
Home Value
$150,184 Zillow
44°F
Avg Temperature
276 sunny days/yr
A
Overall
4.4 / 5.0
Strong
B+
Economy
3.8 / 5.0
$40,750 median income, 0.0% unemployment
A+
Affordability
5.0 / 5.0
$28,500 home value, /mo rent
A
Education
4.4 / 5.0
0.0% bachelor's degree or higher
Seneca has a cool climate with an average annual temperature of 44°F (7°C). Winters average 15°F in January while summers reach 72°F in July. The area gets 276 sunny days per year. Annual precipitation totals 20.2 inches. The area receives 38.7 inches of snow annually. Air quality is rated Good with a median AQI of 35.
Temperature
15°F Jan (-9°C)
72°F Jul (22°C)
| Annual Average | 44.3°F |
| 18% below US avg | |
| January Average | 15°F (-9°C) |
| July Average | 72°F (22°C) |
| Sunny Days | 276 days/yr |
Geography
| Elevation | 1,904 ft (580 m) |
| Area | 0.4 sq mi (1.1 km²) |
| Population Density | 62/sq mi |
| Coordinates | 45.0608°N, 99.5092°W |
| Timezone | America/Chicago |
| County | Faulk County County |
| Nearest Airport | Aberdeen Regional (ABR) 59 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 35.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 8.0 / 100 |
| Social Vulnerability | 90.7 / 100 |
| Community Resilience | 48.4 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Very Low |
| Wildfire | Relatively Low |
| Flood | Very Low |
| Hail | Relatively Low |
| Strong Wind | Very Low |
| Heat Wave | Very Low |
| Winter Weather | Relatively Low |
| Lightning | Very Low |
| Ice Storm | Relatively Low |
| Drought | Relatively Low |
| Cold Wave | Relatively Low |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 15°F (-9°C) | 0.4 in | Coldest, Driest |
| February | 19°F (-7°C) | 0.4 in | |
| March | 30°F (-1°C) | 1.1 in | |
| April | 44°F (7°C) | 2.1 in | |
| May | 57°F (14°C) | 2.6 in | |
| June | 66°F (19°C) | 3.3 in | Wettest |
| July | 72°F (22°C) | 2.5 in | Warmest |
| August | 70°F (21°C) | 2.2 in | |
| September | 60°F (15°C) | 1.4 in | |
| October | 47°F (8°C) | 1.3 in | |
| November | 29°F (-1°C) | 0.6 in | |
| December | 17°F (-8°C) | 0.4 in |
Seneca has a seasonal temperature swing of 57°F / from 15°F in January to 72°F in July. Total annual precipitation is 18.2 inches, with June being the wettest month (3.3") and January the driest (0.4").