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Altamont, SD
Full City Profile · South Dakota · Deuel County County
2.1
/5.0
C
Fair
34
Population
27/sq mi density
$263,900
Home Value
$450,491 Zillow
42°F
Avg Temperature
276 sunny days/yr
C
Overall
2.1 / 5.0
Fair overall score based on economy, affordability, safety and education
C+
Safety
2.5 / 5.0
0 violent crimes/100K
D
Education
1.7 / 5.0
9.1% bachelor's degree or higher
Altamont has a cool climate with an average annual temperature of 42°F (6°C). Winters average 12°F in January while summers reach 70°F in July. The area gets 276 sunny days per year. Annual precipitation totals 27.5 inches. The area receives 60.7 inches of snow annually. Air quality is rated Good with a median AQI of 35.
Temperature
12°F Jan (-11°C)
70°F Jul (21°C)
| Annual Average | 42.4°F |
| 21% below US avg | |
| January Average | 12°F (-11°C) |
| July Average | 70°F (21°C) |
| Sunny Days | 276 days/yr |
Geography
| Elevation | 1,842 ft (561 m) |
| Area | 1.3 sq mi (3.2 km²) |
| Population Density | 27/sq mi |
| Coordinates | 44.8408°N, 96.6902°W |
| Timezone | America/Chicago |
| County | Deuel County County |
| Nearest Airport | Watertown Regional (ATY) 23 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 35.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 6.9 / 100 |
| Social Vulnerability | 10.6 / 100 |
| Community Resilience | 70.1 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Earthquake | Very Low |
| Wildfire | Relatively Low |
| Flood | Very Low |
| Hail | Relatively Low |
| Strong Wind | Relatively Low |
| Heat Wave | Very Low |
| Winter Weather | Relatively Low |
| Lightning | Very Low |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Low |
| Cold Wave | Relatively Low |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 12°F (-11°C) | 0.6 in | Coldest |
| February | 17°F (-8°C) | 0.6 in | |
| March | 29°F (-2°C) | 1.5 in | |
| April | 44°F (6°C) | 2.3 in | |
| May | 57°F (14°C) | 2.8 in | |
| June | 66°F (19°C) | 3.7 in | Wettest |
| July | 70°F (21°C) | 3.4 in | Warmest |
| August | 69°F (20°C) | 2.9 in | |
| September | 59°F (15°C) | 2.1 in | |
| October | 47°F (8°C) | 1.9 in | |
| November | 29°F (-2°C) | 1.0 in | |
| December | 16°F (-9°C) | 0.5 in | Driest |
Altamont has a seasonal temperature swing of 59°F / from 12°F in January to 70°F in July. Total annual precipitation is 23.2 inches, with June being the wettest month (3.7") and December the driest (0.5").