Porcupine, SD
Full City Profile · South Dakota · Oglala Lakota County County
1.9
/5.0
D
Poor
549
Population
57/sq mi density
$20,256
Median Income
$5,851 per capita
48°F
Avg Temperature
D
Overall
1.9 / 5.0
Below average overall score based on economy, affordability, safety and education
C
Economy
2.2 / 5.0
$20,256 median income, 0.0% unemployment
D
Education
1.6 / 5.0
7.0% bachelor's degree or higher
Porcupine experiences four distinct seasons with an average annual temperature of 48°F (9°C). Winters average 25°F in January while summers reach 74°F in July. Annual precipitation totals 19.9 inches. The area receives 45.8 inches of snow annually.
Temperature
25°F Jan (-4°C)
74°F Jul (23°C)
| Annual Average | 48.3°F |
| 11% below US avg | |
| January Average | 25°F (-4°C) |
| July Average | 74°F (23°C) |
Geography
| Elevation | 3,287 ft (1,002 m) |
| Area | 9.5 sq mi (24.7 km²) |
| Population Density | 57/sq mi |
| Coordinates | 43.2685°N, 102.3353°W |
| Timezone | America/Chicago |
| County | Oglala Lakota County County |
| Nearest Airport | Rapid City Regional (RAP) 65 miles away |
Precipitation & Snow
Air Quality
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 49.8 / 100 |
| Social Vulnerability | 99.7 / 100 |
| Community Resilience | 0.1 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Earthquake | Very Low |
| Wildfire | Relatively Moderate |
| Flood | Very Low |
| Hail | Relatively Low |
| Strong Wind | Relatively High |
| Heat Wave | Very Low |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively High |
| Ice Storm | Very 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 | 25°F (-4°C) | 0.5 in | Coldest |
| February | 27°F (-3°C) | 0.7 in | |
| March | 38°F (3°C) | 1.3 in | |
| April | 46°F (8°C) | 2.4 in | |
| May | 56°F (13°C) | 3.2 in | Wettest |
| June | 66°F (19°C) | 3.1 in | |
| July | 74°F (23°C) | 2.2 in | Warmest |
| August | 73°F (23°C) | 2.0 in | |
| September | 64°F (18°C) | 1.5 in | |
| October | 49°F (10°C) | 1.7 in | |
| November | 36°F (2°C) | 0.8 in | |
| December | 27°F (-3°C) | 0.5 in | Driest |
Porcupine has a seasonal temperature swing of 49°F / from 25°F in January to 74°F in July. Total annual precipitation is 19.9 inches, with May being the wettest month (3.2") and December the driest (0.5").