Lyons, SD
Full City Profile · South Dakota · Minnehaha County County
5.0
/5.0
A+
Excellent
94
Population
188/sq mi density
$134,688
Median Income
$52,466 per capita
47°F
Avg Temperature
A+
Overall
5.0 / 5.0
Strong
A+
Economy
5.0 / 5.0
$134,688 median income, 0.0% unemployment
A+
Education
5.0 / 5.0
52.3% bachelor's degree or higher
Lyons experiences four distinct seasons with an average annual temperature of 47°F (8°C). Winters average 18°F in January while summers reach 74°F in July. Annual precipitation totals 27.9 inches. The area receives 39.6 inches of snow annually. Air quality is rated Good with a median AQI of 34.
Temperature
18°F Jan (-8°C)
74°F Jul (24°C)
| Annual Average | 47.4°F |
| 12% below US avg | |
| January Average | 18°F (-8°C) |
| July Average | 74°F (24°C) |
Geography
| Elevation | 1,567 ft (478 m) |
| Area | 13.8 sq mi (35.8 km²) |
| Population Density | 188/sq mi |
| Coordinates | 43.7249°N, 96.8662°W |
| Timezone | America/Chicago |
| County | Minnehaha County County |
| Nearest Airport | Joe Foss Field (FSD) 12 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 34.0 |
| Rating | Good |
| Good Days % | 81.4% |
| Unhealthy Days | 2 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0443 ppm |
| NO₂ (Nitrogen Dioxide) | 8.4 ppb |
| SO₂ (Sulfur Dioxide) | 0.16 ppb |
| CO (Carbon Monoxide) | 0.24 ppm |
| PM2.5 (Fine Particles) | 7.7 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 89.5 / 100 |
| Social Vulnerability | 14.1 / 100 |
| Community Resilience | 86.9 / 100 |
Hazard Breakdown
| Tornado | Relatively High |
| Earthquake | Very Low |
| Wildfire | Relatively Low |
| Flood | Relatively Moderate |
| Hail | Relatively Moderate |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively High |
| Lightning | Relatively Low |
| Ice Storm | Very High |
| Drought | Relatively Moderate |
| Cold Wave | Relatively High |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 18°F (-8°C) | 0.5 in | Coldest, Driest |
| February | 22°F (-5°C) | 1.0 in | |
| March | 35°F (2°C) | 1.4 in | |
| April | 47°F (8°C) | 3.1 in | |
| May | 59°F (15°C) | 3.7 in | |
| June | 70°F (21°C) | 4.3 in | Wettest |
| July | 74°F (24°C) | 3.4 in | Warmest |
| August | 72°F (22°C) | 3.5 in | |
| September | 64°F (18°C) | 3.2 in | |
| October | 50°F (10°C) | 2.1 in | |
| November | 35°F (2°C) | 1.1 in | |
| December | 23°F (-5°C) | 0.8 in |
Lyons has a seasonal temperature swing of 57°F / from 18°F in January to 74°F in July. Total annual precipitation is 27.9 inches, with June being the wettest month (4.3") and January the driest (0.5").