Willow Lake, SD
Full City Profile · South Dakota · Clark County County
3.9
/5.0
B+
Good
455
Population
1,230/sq mi density
$63,929
Median Income
$15,916 per capita
$150,000
Home Value
$248,681 Zillow
$810
Median Rent
14.3% income on rent
44°F
Avg Temperature
B+
Overall
3.9 / 5.0
Good overall score based on economy, affordability, safety and education
A
Economy
4.3 / 5.0
$63,929 median income, 0.0% unemployment
A+
Affordability
5.0 / 5.0
$150,000 home value, $810/mo rent
C
Education
2.3 / 5.0
16.2% bachelor's degree or higher
Willow Lake has a cool climate with an average annual temperature of 44°F (7°C). Winters average 14°F in January while summers reach 71°F in July. Annual precipitation totals 26.5 inches. The area receives 47.7 inches of snow annually.
Temperature
14°F Jan (-10°C)
71°F Jul (22°C)
| Annual Average | 44.0°F |
| 19% below US avg | |
| January Average | 14°F (-10°C) |
| July Average | 71°F (22°C) |
Geography
| Elevation | 1,778 ft (542 m) |
| Area | 0.4 sq mi (1.0 km²) |
| Population Density | 1,230/sq mi |
| Coordinates | 44.6279°N, 97.6381°W |
| Timezone | America/Chicago |
| County | Clark County County |
| Nearest Airport | Watertown Regional (ATY) 31 miles away |
Precipitation & Snow
Air Quality
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 4.6 / 100 |
| Social Vulnerability | 10.6 / 100 |
| Community Resilience | 61.2 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Very Low |
| Hail | Relatively Low |
| Strong Wind | Very Low |
| Heat Wave | Very Low |
| Winter Weather | Relatively Low |
| Lightning | Very Low |
| Ice Storm | Relatively Low |
| Drought | No Rating |
| Cold Wave | Relatively Low |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 14°F (-10°C) | 0.7 in | Coldest |
| February | 19°F (-7°C) | 0.7 in | Driest |
| March | 31°F (-1°C) | 1.2 in | |
| April | 44°F (7°C) | 2.4 in | |
| May | 56°F (13°C) | 3.3 in | |
| June | 67°F (19°C) | 4.4 in | Wettest |
| July | 71°F (22°C) | 3.5 in | Warmest |
| August | 69°F (21°C) | 3.3 in | |
| September | 61°F (16°C) | 3.0 in | |
| October | 46°F (8°C) | 2.4 in | |
| November | 31°F (-0°C) | 0.9 in | |
| December | 19°F (-7°C) | 0.8 in |
Willow Lake has a seasonal temperature swing of 57°F / from 14°F in January to 71°F in July. Total annual precipitation is 26.5 inches, with June being the wettest month (4.4") and February the driest (0.7").