Altamont, SD

Full City Profile · South Dakota · Deuel County County

1.7 /5.0
D Poor
34 Population 27/sq mi density
$263,900 Home Value $450,491 Zillow
42°F Avg Temperature
D
Overall
1.7 / 5.0
Below average overall score based on economy, affordability, safety and education
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. Annual precipitation totals 27.5 inches. The area receives 60.7 inches of snow annually.

Temperature

12°F Jan (-11°C) 70°F Jul (21°C)
Annual Average42.4°F
21% below US avg
January Average12°F (-11°C)
July Average70°F (21°C)

Geography

Elevation1,842 ft (561 m)
Area1.3 sq mi (3.2 km²)
Population Density27/sq mi
Coordinates44.8408°N, 96.6902°W
TimezoneAmerica/Chicago
CountyDeuel County County
Nearest AirportWatertown Regional (ATY)
23 miles away

Precipitation & Snow

Annual Rainfall 27.5"
28% below US avg
Snowfall 60.7"
Wettest Month (Jun) 4.46"
Driest Month (Jan) 0.72"

Air Quality

Natural Hazard Risk

Overall RiskVery Low
Risk Score6.9 / 100
Social Vulnerability10.6 / 100
Community Resilience70.1 / 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)

Earthquake History

4 earthquakes (M2.5+) within 150 km since 1990. Strongest: M4.1. Most recent: M3.1 on Jul 26, 2002.

Jun 5, 1993 11 km N of Johnson, Minnesota M4.1 98 km
Oct 20, 1995 8 km SSE of New Effington, South Dakota M3.7 106 km
Jul 26, 2002 0 km WSW of Huron, South Dakota M3.1 132 km
Feb 9, 1994 6 km NNE of Blomkest, Minnesota M3.1 134 km
Source: USGS (M2.5+, 1990-2025)

Tornado History

423 tornadoes (EF0+) within 100 km since 1950. Strongest: EF4. Total: 3 fatalities, 74 injuries.

Date Rating Distance Fatalities
Jul 25, 2000 EF4 81 km 1
Jul 7, 1955 EF4 56 km 1
May 30, 2022 EF3 12 km 0
May 17, 1996 EF3 39 km 0
Jun 7, 1993 EF3 96 km 0
Jun 16, 1992 EF3 67 km 0
Jun 16, 1992 EF3 67 km 0
Jun 16, 1992 EF3 71 km 0
May 12, 1984 EF3 82 km 0
Jul 18, 1983 EF3 38 km 0
Jun 15, 1970 EF3 80 km 0
May 30, 2022 EF2 21 km 0
May 12, 2022 EF2 20 km 0
May 12, 2022 EF2 30 km 0
May 12, 2022 EF2 32 km 0
Jul 1, 2011 EF2 76 km 0
Sep 23, 2004 EF2 96 km 0
Jun 24, 2003 EF2 89 km 0
Jun 11, 2001 EF2 100 km 0
Jun 16, 1992 EF2 92 km 0
Source: NOAA SPC (EF0+, 1950-2024)

Wildfire History

20 wildfires (100+ acres) within 100 km. Largest: LOUISBURGRADE (6,487 ac, 2004).

Year Name Acres Distance
2004 LOUISBURGRADE 6,487 55 km
2003 CHIPPEWA PRAIRIE 2,067 63 km
2004 FISH FIRE 1,799 52 km
2005 GRAND MEWS 1,245 52 km
1998 LEE 1,137 50 km
1995 UNNAMED 1,115 51 km
2003 ANDERSON 1,082 51 km
1998 ANDREASEN 1,001 53 km
1992 SPRING LK 1,001 81 km
1990 ANDERSON 988 52 km
2007 ANDERSON 797 51 km
2006 ANDERSON 764 52 km
1986 ANDERSON 746 51 km
2000 FISH 720 52 km
2007 LEE 689 50 km
2006 MOSQUITO RANCH 656 87 km
2003 LEE 560 50 km
1994 ARTICHOKE 556 71 km
2002 ARTICHOKE 548 71 km
1997 ROBIN HOOD 542 86 km
Source: NIFC/IRWIN (100+ acres)

Monthly Weather

Month Avg Temperature Precipitation Summary
January 12°F (-11°C) 0.7 in Coldest, Driest
February 16°F (-9°C) 0.8 in
March 28°F (-2°C) 1.6 in
April 42°F (6°C) 2.5 in
May 55°F (13°C) 3.4 in
June 65°F (19°C) 4.5 in Wettest
July 70°F (21°C) 3.3 in Warmest
August 68°F (20°C) 3.4 in
September 60°F (15°C) 3.0 in
October 45°F (7°C) 2.4 in
November 31°F (-1°C) 1.1 in
December 17°F (-8°C) 0.9 in

Altamont has a seasonal temperature swing of 59°F / from 12°F in January to 70°F in July. Total annual precipitation is 27.5 inches, with June being the wettest month (4.5") and January the driest (0.7").

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