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Isabel, SD
Full City Profile · South Dakota · Corson County County
3.3
/5.0
B
Good
182
Population
214/sq mi density
$70,625
Median Income
$31,780 per capita
$49,300
Home Value
$277,791 Zillow
$756
Median Rent
13.2% income on rent
45°F
Avg Temperature
311 sunny days/yr
B
Overall
3.3 / 5.0
Good overall score based on economy, affordability, safety and education
B+
Economy
3.8 / 5.0
$70,625 median income, 6.4% unemployment
A+
Affordability
5.0 / 5.0
$49,300 home value, $756/mo rent
C+
Safety
2.5 / 5.0
0 violent crimes/100K
D
Education
1.9 / 5.0
11.0% bachelor's degree or higher
Isabel has a cool climate with an average annual temperature of 45°F (7°C). Winters average 17°F in January while summers reach 73°F in July. The area gets 311 sunny days per year. Annual precipitation totals 19.4 inches. The area receives 41.2 inches of snow annually. Air quality is rated Good with a median AQI of 35.
Temperature
17°F Jan (-8°C)
73°F Jul (23°C)
| Annual Average | 45.3°F |
| 16% below US avg | |
| January Average | 17°F (-8°C) |
| July Average | 73°F (23°C) |
| Sunny Days | 311 days/yr |
Geography
| Elevation | 2,393 ft (729 m) |
| Area | 0.9 sq mi (2.4 km²) |
| Population Density | 214/sq mi |
| Coordinates | 45.3937°N, 101.4315°W |
| Timezone | America/Chicago |
| County | Corson County County |
| Nearest Airport | Pierre Regional (PIR) 90 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 35.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 38.1 / 100 |
| Social Vulnerability | 91.2 / 100 |
| Community Resilience | 2.9 / 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 | Very Low |
| Cold Wave | Relatively High |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 17°F (-8°C) | 0.3 in | Coldest, Driest |
| February | 21°F (-6°C) | 0.5 in | |
| March | 31°F (-1°C) | 1.1 in | |
| April | 44°F (7°C) | 2.1 in | |
| May | 56°F (14°C) | 3.0 in | |
| June | 66°F (19°C) | 3.2 in | Wettest |
| July | 73°F (23°C) | 2.2 in | Warmest |
| August | 71°F (22°C) | 1.8 in | |
| September | 61°F (16°C) | 1.3 in | |
| October | 48°F (9°C) | 1.1 in | |
| November | 31°F (-1°C) | 0.5 in | |
| December | 19°F (-7°C) | 0.4 in |
Isabel has a seasonal temperature swing of 56°F / from 17°F in January to 73°F in July. Total annual precipitation is 17.5 inches, with June being the wettest month (3.2") and January the driest (0.3").