Long Lake, SD
Full City Profile · South Dakota · McPherson County County
4.6
/5.0
A+
Excellent
17
Population
61/sq mi density
$58,438
Median Income
$32,641 per capita
$28,800
Home Value
$236,161 Zillow
42°F
Avg Temperature
A+
Overall
4.6 / 5.0
Strong
A
Economy
4.2 / 5.0
$58,438 median income, 0.0% unemployment
A+
Affordability
5.0 / 5.0
$28,800 home value, /mo rent
A
Education
4.5 / 5.0
0.0% bachelor's degree or higher
Long Lake has a cool climate with an average annual temperature of 42°F (6°C). Winters average 12°F in January while summers reach 70°F in July. Annual precipitation totals 19.9 inches. The area receives 42.4 inches of snow annually.
Temperature
12°F Jan (-11°C)
70°F Jul (21°C)
| Annual Average | 41.9°F |
| 22% below US avg | |
| January Average | 12°F (-11°C) |
| July Average | 70°F (21°C) |
Geography
| Elevation | 1,956 ft (596 m) |
| Area | 0.3 sq mi (0.7 km²) |
| Population Density | 61/sq mi |
| Coordinates | 45.8567°N, 99.2058°W |
| Timezone | America/Chicago |
| County | McPherson County County |
| Nearest Airport | Aberdeen Regional (ABR) 47 miles away |
Precipitation & Snow
Air Quality
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 11.1 / 100 |
| Social Vulnerability | 82.8 / 100 |
| Community Resilience | 55.2 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Earthquake | Very Low |
| Wildfire | Relatively Low |
| Flood | Very Low |
| Hail | Relatively Low |
| Strong Wind | Relatively 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 | 12°F (-11°C) | 0.5 in | Coldest |
| February | 15°F (-9°C) | 0.5 in | |
| March | 28°F (-2°C) | 1.4 in | |
| April | 42°F (6°C) | 1.7 in | |
| May | 54°F (12°C) | 2.9 in | |
| June | 64°F (18°C) | 3.3 in | Wettest |
| July | 70°F (21°C) | 3.0 in | Warmest |
| August | 68°F (20°C) | 2.1 in | |
| September | 59°F (15°C) | 2.0 in | |
| October | 44°F (7°C) | 1.6 in | |
| November | 29°F (-1°C) | 0.5 in | Driest |
| December | 17°F (-8°C) | 0.6 in |
Long Lake has a seasonal temperature swing of 57°F / from 12°F in January to 70°F in July. Total annual precipitation is 19.9 inches, with June being the wettest month (3.3") and November the driest (0.5").