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Eureka, SD
Full City Profile · South Dakota · McPherson County County
3.3
/5.0
B
Good
946
Population
1,017/sq mi density
$34,167
Median Income
$40,553 per capita
$69,800
Home Value
$213,834 Zillow
$557
Median Rent
25.6% income on rent
42°F
Avg Temperature
276 sunny days/yr
B
Overall
3.3 / 5.0
Good overall score based on economy, affordability, safety and education
B
Economy
3.2 / 5.0
$34,167 median income, 0.0% unemployment
A+
Affordability
5.0 / 5.0
$69,800 home value, $557/mo rent
C+
Safety
2.5 / 5.0
0 violent crimes/100K
C+
Education
2.6 / 5.0
20.3% bachelor's degree or higher
Eureka has a cool climate with an average annual temperature of 42°F (6°C). Winters average 11°F in January while summers reach 70°F in July. The area gets 276 sunny days per year. Annual precipitation totals 20.3 inches. The area receives 44.3 inches of snow annually. Air quality is rated Good with a median AQI of 35.
Temperature
11°F Jan (-12°C)
70°F Jul (21°C)
| Annual Average | 41.8°F |
| 23% below US avg | |
| January Average | 11°F (-12°C) |
| July Average | 70°F (21°C) |
| Sunny Days | 276 days/yr |
Geography
| Elevation | 1,885 ft (575 m) |
| Area | 1.0 sq mi (2.6 km²) |
| Population Density | 1,017/sq mi |
| Coordinates | 45.7712°N, 99.6207°W |
| Timezone | America/Chicago |
| County | McPherson County County |
| Nearest Airport | Aberdeen Regional (ABR) 62 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 35.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 11.1 / 100 |
| Social Vulnerability | 82.8 / 100 |
| Community Resilience | 55.2 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Very Low |
| Wildfire | Relatively Low |
| Flood | Very Low |
| Hail | Relatively Low |
| Strong Wind | Relatively Low |
| Heat Wave | Very Low |
| Winter Weather | Relatively Moderate |
| Lightning | Very Low |
| Ice Storm | Relatively Low |
| Drought | Relatively Low |
| Cold Wave | Relatively Moderate |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 11°F (-12°C) | 0.4 in | Coldest, Driest |
| February | 17°F (-8°C) | 0.4 in | |
| March | 29°F (-2°C) | 0.9 in | |
| April | 44°F (7°C) | 1.8 in | |
| May | 56°F (14°C) | 2.6 in | |
| June | 65°F (19°C) | 3.3 in | Wettest |
| July | 70°F (21°C) | 2.6 in | Warmest |
| August | 70°F (21°C) | 2.2 in | |
| September | 59°F (15°C) | 1.5 in | |
| October | 46°F (8°C) | 1.4 in | |
| November | 28°F (-2°C) | 0.7 in | |
| December | 15°F (-10°C) | 0.4 in |
Eureka has a seasonal temperature swing of 59°F / from 11°F in January to 70°F in July. Total annual precipitation is 18.0 inches, with June being the wettest month (3.3") and January the driest (0.4").