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Vermillion, SD
Full City Profile · South Dakota · Clay County County
3.4
/5.0
B
Good
11,800
Population
2,463/sq mi density
$52,815
Median Income
$24,675 per capita
$210,200
Home Value
$268,591 Zillow
$728
Median Rent
25.8% income on rent
49°F
Avg Temperature
291 sunny days/yr
194
Violent Crime/100K
1,929 property/100K
B
Overall
3.4 / 5.0
Good overall score based on economy, affordability, safety and education
B
Economy
3.2 / 5.0
$52,815 median income, 7.0% unemployment
A
Affordability
4.4 / 5.0
$210,200 home value, $728/mo rent
F
Safety
1.0 / 5.0
194 violent crimes/100K
A+
Education
5.0 / 5.0
50.6% bachelor's degree or higher
Vermillion experiences four distinct seasons with an average annual temperature of 49°F (9°C). Winters average 20°F in January while summers reach 74°F in July. The area gets 291 sunny days per year. Annual precipitation totals 28.0 inches. Air quality is rated Good with a median AQI of 35.
Temperature
20°F Jan (-6°C)
74°F Jul (24°C)
| Annual Average | 48.8°F |
| 10% below US avg | |
| January Average | 20°F (-6°C) |
| July Average | 74°F (24°C) |
| Sunny Days | 291 days/yr |
Geography
| Elevation | 1,233 ft (376 m) |
| Area | 4.8 sq mi (12.4 km²) |
| Population Density | 2,463/sq mi |
| Coordinates | 42.7814°N, 96.9254°W |
| Timezone | America/Chicago |
| County | Clay County County |
| Nearest Airport | Sioux Gateway/Brig General Bud Day Field (SUX) 38 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 35.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0477 ppm |
| PM2.5 (Fine Particles) | 8.7 μg/m³ |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 20.5 / 100 |
| Social Vulnerability | 10.6 / 100 |
| Community Resilience | 85.8 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Very Low |
| Hail | Relatively Low |
| Strong Wind | Relatively Low |
| Heat Wave | Very Low |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively Low |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Moderate |
| Cold Wave | Very Low |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 20°F (-6°C) | 0.4 in | Coldest, Driest |
| February | 24°F (-4°C) | 0.6 in | |
| March | 35°F (2°C) | 1.8 in | |
| April | 49°F (9°C) | 2.6 in | |
| May | 60°F (16°C) | 3.6 in | |
| June | 70°F (21°C) | 3.7 in | Wettest |
| July | 74°F (24°C) | 3.2 in | Warmest |
| August | 73°F (23°C) | 2.8 in | |
| September | 63°F (17°C) | 2.5 in | |
| October | 51°F (10°C) | 1.9 in | |
| November | 34°F (1°C) | 1.4 in | |
| December | 22°F (-6°C) | 0.6 in |
Vermillion has a seasonal temperature swing of 54°F / from 20°F in January to 74°F in July. Total annual precipitation is 25.2 inches, with June being the wettest month (3.7") and January the driest (0.4").