Delmont, SD
Full City Profile · South Dakota · Douglas County County
3.5
/5.0
B+
Good
196
Population
258/sq mi density
$43,542
Median Income
$30,708 per capita
$91,300
Home Value
$233,084 Zillow
49°F
Avg Temperature
B+
Overall
3.5 / 5.0
Good overall score based on economy, affordability, safety and education
B
Economy
3.4 / 5.0
$43,542 median income, 1.2% unemployment
A+
Affordability
5.0 / 5.0
$91,300 home value, /mo rent
C
Education
2.0 / 5.0
13.0% bachelor's degree or higher
Delmont experiences four distinct seasons with an average annual temperature of 49°F (9°C). Winters average 21°F in January while summers reach 75°F in July. Annual precipitation totals 25.4 inches. The area receives 34.4 inches of snow annually.
Temperature
21°F Jan (-6°C)
75°F Jul (24°C)
| Annual Average | 48.9°F |
| 9% below US avg | |
| January Average | 21°F (-6°C) |
| July Average | 75°F (24°C) |
Geography
| Elevation | 1,482 ft (452 m) |
| Area | 0.8 sq mi (2.0 km²) |
| Population Density | 258/sq mi |
| Coordinates | 43.2666°N, 98.1592°W |
| Timezone | America/Chicago |
| County | Douglas County County |
| Nearest Airport | Mitchell Municipal (MHE) 36 miles away |
Precipitation & Snow
Air Quality
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 10.4 / 100 |
| Social Vulnerability | 17.2 / 100 |
| Community Resilience | 69.8 / 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 Low |
| Lightning | Very Low |
| Ice Storm | Relatively Moderate |
| 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 | 21°F (-6°C) | 0.6 in | Coldest, Driest |
| February | 26°F (-4°C) | 0.9 in | |
| March | 37°F (3°C) | 1.2 in | |
| April | 49°F (9°C) | 3.3 in | |
| May | 60°F (15°C) | 4.0 in | Wettest |
| June | 70°F (21°C) | 3.7 in | |
| July | 75°F (24°C) | 2.7 in | Warmest |
| August | 73°F (23°C) | 2.8 in | |
| September | 65°F (19°C) | 2.4 in | |
| October | 51°F (11°C) | 2.1 in | |
| November | 36°F (2°C) | 1.0 in | |
| December | 25°F (-4°C) | 0.7 in |
Delmont has a seasonal temperature swing of 54°F / from 21°F in January to 75°F in July. Total annual precipitation is 25.4 inches, with May being the wettest month (4.0") and January the driest (0.6").