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New Underwood, SD
Full City Profile · South Dakota · Pennington County County
2.9
/5.0
C+
Fair
538
Population
371/sq mi density
$54,167
Median Income
$21,088 per capita
$188,700
Home Value
$431,727 Zillow
$862
Median Rent
51.0% income on rent
47°F
Avg Temperature
311 sunny days/yr
286
Violent Crime/100K
1,315 property/100K
C+
Overall
2.9 / 5.0
Fair overall score based on economy, affordability, safety and education
B+
Economy
3.8 / 5.0
$54,167 median income, 4.1% unemployment
A+
Affordability
4.7 / 5.0
$188,700 home value, $862/mo rent
F
Safety
1.0 / 5.0
286 violent crimes/100K
D
Education
1.9 / 5.0
11.8% bachelor's degree or higher
New Underwood experiences four distinct seasons with an average annual temperature of 47°F (8°C). Winters average 24°F in January while summers reach 72°F in July. The area gets 311 sunny days per year. Annual precipitation totals 17.4 inches. The area receives 48.5 inches of snow annually. Air quality is rated Good with a median AQI of 35.
Temperature
24°F Jan (-4°C)
72°F Jul (22°C)
| Annual Average | 46.7°F |
| 14% below US avg | |
| January Average | 24°F (-4°C) |
| July Average | 72°F (22°C) |
| Sunny Days | 311 days/yr |
Geography
| Elevation | 2,889 ft (881 m) |
| Area | 1.5 sq mi (3.8 km²) |
| Population Density | 371/sq mi |
| Coordinates | 44.0975°N, 102.8469°W |
| Timezone | America/Chicago |
| County | Pennington County County |
| Nearest Airport | Rapid City Regional (RAP) 11 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 35.0 |
| Rating | Good |
Air Pollutants (EPA 2023)
| NO₂ (Nitrogen Dioxide) | 9.0 ppb |
| SO₂ (Sulfur Dioxide) | 0.06 ppb |
| PM2.5 (Fine Particles) | 8.4 μg/m³ |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 78.6 / 100 |
| Social Vulnerability | 34.6 / 100 |
| Community Resilience | 70.8 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Earthquake | Very Low |
| Wildfire | Relatively Moderate |
| Flood | Relatively Moderate |
| Hail | Relatively High |
| Strong Wind | Relatively Low |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively High |
| Lightning | Relatively High |
| Ice Storm | Relatively High |
| Drought | Very Low |
| Cold Wave | Relatively Moderate |
| Landslide | Relatively Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 24°F (-4°C) | 0.4 in | Coldest, Driest |
| February | 28°F (-2°C) | 0.5 in | |
| March | 35°F (2°C) | 1.0 in | |
| April | 45°F (7°C) | 1.9 in | |
| May | 56°F (13°C) | 2.9 in | Wettest |
| June | 66°F (19°C) | 2.9 in | |
| July | 72°F (22°C) | 2.2 in | Warmest |
| August | 72°F (22°C) | 1.6 in | |
| September | 62°F (16°C) | 1.2 in | |
| October | 49°F (9°C) | 1.3 in | |
| November | 34°F (1°C) | 0.6 in | |
| December | 25°F (-4°C) | 0.4 in |
New Underwood has a seasonal temperature swing of 48°F / from 24°F in January to 72°F in July. Total annual precipitation is 16.8 inches, with May being the wettest month (2.9") and January the driest (0.4").