Dallas, SD
Full City Profile · South Dakota · Gregory County County
3.5
/5.0
B+
Good
102
Population
200/sq mi density
$62,813
Median Income
$27,408 per capita
$77,100
Home Value
$180,256 Zillow
47°F
Avg Temperature
B+
Overall
3.5 / 5.0
Good overall score based on economy, affordability, safety and education
A
Economy
4.2 / 5.0
$62,813 median income, 0.0% unemployment
A+
Affordability
5.0 / 5.0
$77,100 home value, /mo rent
F
Education
1.3 / 5.0
3.2% bachelor's degree or higher
Dallas experiences four distinct seasons with an average annual temperature of 47°F (8°C). Winters average 21°F in January while summers reach 74°F in July. Annual precipitation totals 26.7 inches. The area receives 45.0 inches of snow annually.
Temperature
21°F Jan (-6°C)
74°F Jul (23°C)
| Annual Average | 47.3°F |
| 12% below US avg | |
| January Average | 21°F (-6°C) |
| July Average | 74°F (23°C) |
Geography
| Elevation | 2,222 ft (677 m) |
| Area | 0.5 sq mi (1.3 km²) |
| Population Density | 200/sq mi |
| Coordinates | 43.2378°N, 99.5175°W |
| Timezone | America/Chicago |
| County | Gregory County County |
| Nearest Airport | Ainsworth Regional (ANW) 51 miles away |
Precipitation & Snow
Air Quality
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 16.2 / 100 |
| Social Vulnerability | 18.9 / 100 |
| Community Resilience | 78.3 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Earthquake | Very Low |
| Wildfire | Relatively Low |
| Flood | Very Low |
| Hail | Relatively Low |
| Strong Wind | Very 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 | 21°F (-6°C) | 0.6 in | Coldest, Driest |
| February | 25°F (-4°C) | 0.8 in | |
| March | 35°F (2°C) | 1.3 in | |
| April | 45°F (7°C) | 3.1 in | |
| May | 57°F (14°C) | 4.1 in | |
| June | 68°F (20°C) | 4.2 in | Wettest |
| July | 74°F (23°C) | 3.0 in | Warmest |
| August | 72°F (22°C) | 3.1 in | |
| September | 63°F (17°C) | 2.4 in | |
| October | 49°F (9°C) | 2.4 in | |
| November | 35°F (2°C) | 1.0 in | |
| December | 24°F (-4°C) | 0.7 in |
Dallas has a seasonal temperature swing of 53°F / from 21°F in January to 74°F in July. Total annual precipitation is 26.7 inches, with June being the wettest month (4.2") and January the driest (0.6").