Mount Vernon, SD
Full City Profile · South Dakota · Davison County County
3.9
/5.0
B+
Good
437
Population
1,285/sq mi density
$58,542
Median Income
$31,970 per capita
$163,100
Home Value
$289,654 Zillow
$382
Median Rent
17.6% income on rent
48°F
Avg Temperature
B+
Overall
3.9 / 5.0
Good overall score based on economy, affordability, safety and education
A
Economy
4.2 / 5.0
$58,542 median income, 0.4% unemployment
A+
Affordability
5.0 / 5.0
$163,100 home value, $382/mo rent
C+
Education
2.6 / 5.0
19.7% bachelor's degree or higher
Mount Vernon experiences four distinct seasons with an average annual temperature of 48°F (9°C). Winters average 19°F in January while summers reach 75°F in July. Annual precipitation totals 21.1 inches. The area receives 40.6 inches of snow annually.
Temperature
19°F Jan (-7°C)
75°F Jul (24°C)
| Annual Average | 47.7°F |
| 12% below US avg | |
| January Average | 19°F (-7°C) |
| July Average | 75°F (24°C) |
Geography
| Elevation | 1,406 ft (429 m) |
| Area | 0.4 sq mi (0.9 km²) |
| Population Density | 1,285/sq mi |
| Coordinates | 43.7127°N, 98.2612°W |
| Timezone | America/Chicago |
| County | Davison County County |
| Nearest Airport | Mitchell Municipal (MHE) 12 miles away |
Precipitation & Snow
Air Quality
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 39.3 / 100 |
| Social Vulnerability | 29.1 / 100 |
| Community Resilience | 81.7 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Earthquake | Very Low |
| Wildfire | Relatively Low |
| Flood | Relatively Low |
| Hail | Relatively Low |
| Strong Wind | Relatively Moderate |
| Heat Wave | Very Low |
| Winter Weather | Relatively High |
| Lightning | Relatively Low |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Moderate |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 19°F (-7°C) | 0.4 in | Coldest |
| February | 23°F (-5°C) | 0.4 in | Driest |
| March | 35°F (2°C) | 0.9 in | |
| April | 47°F (8°C) | 2.1 in | |
| May | 59°F (15°C) | 3.2 in | |
| June | 70°F (21°C) | 3.5 in | Wettest |
| July | 75°F (24°C) | 2.4 in | Warmest |
| August | 72°F (22°C) | 3.1 in | |
| September | 64°F (18°C) | 2.3 in | |
| October | 50°F (10°C) | 1.8 in | |
| November | 35°F (2°C) | 0.6 in | |
| December | 23°F (-5°C) | 0.5 in |
Mount Vernon has a seasonal temperature swing of 56°F / from 19°F in January to 75°F in July. Total annual precipitation is 21.1 inches, with June being the wettest month (3.5") and February the driest (0.4").