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Selby, SD
Full City Profile · South Dakota · Walworth County County
3.2
/5.0
B
Good
642
Population
904/sq mi density
$40,882
Median Income
$29,241 per capita
$104,800
Home Value
$122,187 Zillow
$532
Median Rent
27.5% income on rent
44°F
Avg Temperature
311 sunny days/yr
B
Overall
3.2 / 5.0
Good overall score based on economy, affordability, safety and education
B
Economy
3.4 / 5.0
$40,882 median income, 4.6% unemployment
A+
Affordability
5.0 / 5.0
$104,800 home value, $532/mo rent
C+
Safety
2.5 / 5.0
0 violent crimes/100K
C
Education
2.1 / 5.0
13.6% bachelor's degree or higher
Selby has a cool climate with an average annual temperature of 44°F (7°C). Winters average 14°F in January while summers reach 72°F in July. The area gets 311 sunny days per year. Annual precipitation totals 19.2 inches. The area receives 33.4 inches of snow annually. Air quality is rated Good with a median AQI of 35.
Temperature
14°F Jan (-10°C)
72°F Jul (22°C)
| Annual Average | 43.7°F |
| 19% below US avg | |
| January Average | 14°F (-10°C) |
| July Average | 72°F (22°C) |
| Sunny Days | 311 days/yr |
Geography
| Elevation | 1,895 ft (578 m) |
| Area | 0.7 sq mi (1.8 km²) |
| Population Density | 904/sq mi |
| Coordinates | 45.5057°N, 100.0329°W |
| Timezone | America/Chicago |
| County | Walworth County County |
| Nearest Airport | Aberdeen Regional (ABR) 78 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 35.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 39.5 / 100 |
| Social Vulnerability | 66.0 / 100 |
| Community Resilience | 82.3 / 100 |
Hazard Breakdown
| Tornado | Relatively 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 | Very 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 | 14°F (-10°C) | 0.3 in | Coldest, Driest |
| February | 19°F (-7°C) | 0.4 in | |
| March | 30°F (-1°C) | 1.0 in | |
| April | 45°F (7°C) | 2.1 in | |
| May | 57°F (14°C) | 2.5 in | |
| June | 67°F (19°C) | 3.2 in | Wettest |
| July | 72°F (22°C) | 2.3 in | Warmest |
| August | 71°F (21°C) | 2.0 in | |
| September | 60°F (16°C) | 1.4 in | |
| October | 47°F (8°C) | 1.1 in | |
| November | 29°F (-2°C) | 0.6 in | |
| December | 16°F (-9°C) | 0.4 in |
Selby has a seasonal temperature swing of 59°F / from 14°F in January to 72°F in July. Total annual precipitation is 17.2 inches, with June being the wettest month (3.2") and January the driest (0.3").