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Ortley, SD
Full City Profile · South Dakota · Day County County
2.8
/5.0
C+
Fair
62
Population
28/sq mi density
$38,750
Median Income
$28,465 per capita
$41,000
Home Value
$246,456 Zillow
43°F
Avg Temperature
276 sunny days/yr
449
Violent Crime/100K
1,142 property/100K
C+
Overall
2.8 / 5.0
Fair overall score based on economy, affordability, safety and education
B
Economy
3.0 / 5.0
$38,750 median income, 5.7% unemployment
A+
Affordability
5.0 / 5.0
$41,000 home value, /mo rent
F
Safety
1.0 / 5.0
449 violent crimes/100K (18% above avg)
C
Education
2.4 / 5.0
17.0% bachelor's degree or higher
Ortley has a cool climate with an average annual temperature of 43°F (6°C). Winters average 11°F in January while summers reach 70°F in July. The area gets 276 sunny days per year. Annual precipitation totals 25.7 inches. The area receives 58.6 inches of snow annually. Air quality is rated Good with a median AQI of 35.
Temperature
11°F Jan (-11°C)
70°F Jul (21°C)
| Annual Average | 42.6°F |
| 21% below US avg | |
| January Average | 11°F (-11°C) |
| July Average | 70°F (21°C) |
| Sunny Days | 276 days/yr |
Geography
| Elevation | 1,844 ft (562 m) |
| Area | 2.2 sq mi (5.8 km²) |
| Population Density | 28/sq mi |
| Coordinates | 45.3349°N, 97.2049°W |
| Timezone | America/Chicago |
| County | Day County County |
| Nearest Airport | Watertown Regional (ATY) 29 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 35.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 27.6 / 100 |
| Social Vulnerability | 74.7 / 100 |
| Community Resilience | 84.5 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Earthquake | Very Low |
| Wildfire | Relatively Low |
| Flood | Very Low |
| Hail | Relatively Low |
| Strong Wind | Relatively Moderate |
| Heat Wave | Very Low |
| Winter Weather | Relatively Moderate |
| Lightning | Very Low |
| Ice Storm | Relatively Moderate |
| Drought | Very 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 | 11°F (-11°C) | 0.5 in | Coldest |
| February | 16°F (-9°C) | 0.5 in | |
| March | 28°F (-2°C) | 1.2 in | |
| April | 43°F (6°C) | 1.9 in | |
| May | 57°F (14°C) | 2.9 in | |
| June | 66°F (19°C) | 3.4 in | Wettest |
| July | 70°F (21°C) | 3.2 in | Warmest |
| August | 69°F (21°C) | 2.8 in | |
| September | 59°F (15°C) | 1.9 in | |
| October | 46°F (8°C) | 1.5 in | |
| November | 28°F (-2°C) | 0.7 in | |
| December | 15°F (-10°C) | 0.4 in | Driest |
Ortley has a seasonal temperature swing of 59°F / from 11°F in January to 70°F in July. Total annual precipitation is 20.8 inches, with June being the wettest month (3.4") and December the driest (0.4").