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Reliance, SD
Full City Profile · South Dakota · Lyman County County
3.5
/5.0
B+
Good
196
Population
180/sq mi density
$53,594
Median Income
$29,059 per capita
$90,000
Home Value
$240,737 Zillow
48°F
Avg Temperature
291 sunny days/yr
855
Violent Crime/100K
4,599 property/100K
B+
Overall
3.5 / 5.0
Good overall score based on economy, affordability, safety and education
A
Economy
4.1 / 5.0
$53,594 median income, 0.0% unemployment
A+
Affordability
5.0 / 5.0
$90,000 home value, /mo rent
F
Safety
1.0 / 5.0
855 violent crimes/100K (125% above avg)
B+
Education
3.9 / 5.0
36.8% bachelor's degree or higher
Reliance experiences four distinct seasons with an average annual temperature of 48°F (9°C). Winters average 20°F in January while summers reach 76°F in July. The area gets 291 sunny days per year. Annual precipitation totals 20.8 inches. The area receives 39.6 inches of snow annually. Air quality is rated Good with a median AQI of 35.
Temperature
20°F Jan (-6°C)
76°F Jul (24°C)
| Annual Average | 48.1°F |
| 11% below US avg | |
| January Average | 20°F (-6°C) |
| July Average | 76°F (24°C) |
| Sunny Days | 291 days/yr |
Geography
| Elevation | 1,772 ft (540 m) |
| Area | 1.1 sq mi (3.0 km²) |
| Population Density | 180/sq mi |
| Coordinates | 43.8804°N, 99.6012°W |
| Timezone | America/Chicago |
| County | Lyman County County |
| Nearest Airport | Pierre Regional (PIR) 49 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 35.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 26.5 / 100 |
| Social Vulnerability | 86.2 / 100 |
| Community Resilience | 28.6 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Earthquake | Very Low |
| Wildfire | Relatively Low |
| Flood | Very Low |
| Hail | Relatively Low |
| Strong Wind | Very 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 | 20°F (-6°C) | 0.3 in | Coldest, Driest |
| February | 23°F (-5°C) | 0.4 in | |
| March | 33°F (0°C) | 1.3 in | |
| April | 46°F (8°C) | 2.2 in | |
| May | 58°F (14°C) | 2.9 in | |
| June | 68°F (20°C) | 3.1 in | Wettest |
| July | 76°F (24°C) | 2.7 in | Warmest |
| August | 73°F (23°C) | 2.1 in | |
| September | 63°F (17°C) | 1.6 in | |
| October | 50°F (10°C) | 1.5 in | |
| November | 33°F (1°C) | 0.6 in | |
| December | 22°F (-6°C) | 0.4 in |
Reliance has a seasonal temperature swing of 55°F / from 20°F in January to 76°F in July. Total annual precipitation is 19.1 inches, with June being the wettest month (3.1") and January the driest (0.3").