Weather & Climate in Clark Colony, SD

Temperature, precipitation, air quality, natural hazards, and monthly weather data.

Clark Colony has a cool climate with an average annual temperature of 43°F (6°C). Winters average 12°F in January while summers reach 71°F in July. The area gets 276 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 24.0 inches (drier than the 38-inch national average). Air quality is rated Good with a median AQI of 35. The city sits at an elevation of 1,419 feet.

Temperature

12°F Jan (-11°C) 71°F Jul (21°C)

Annual Average	43.0°F
	20% below US avg
January Average	12°F (-11°C)
July Average	71°F (21°C)
Sunny Days	276 days/yr

Geography

Elevation	1,419 ft (433 m)
Area	0.3 sq mi (0.6 km²)
Population Density	252/sq mi
Coordinates	44.7914°N, 97.9815°W
Timezone	America/Chicago
County	Clark County County
Nearest Airport	Huron Regional (HON) 31 miles away

Precipitation & Snow

Annual Rainfall 24.0"

37% below US avg

Wettest Month (Jun) 3.50"

Driest Month (Dec) 0.43"

Air Quality

AQI Median	35.0
Rating	Good

Natural Hazard Risk

Overall Risk	Very Low
Risk Score	4.6 / 100
Social Vulnerability	10.6 / 100
Community Resilience	61.2 / 100

Hazard Breakdown

Tornado	Very Low
Earthquake	Very Low
Wildfire	Very Low
Flood	Very Low
Hail	Relatively Low
Strong Wind	Very Low
Heat Wave	Very Low
Winter Weather	Relatively Low
Lightning	Very Low
Ice Storm	Relatively Low
Drought	No Rating
Cold Wave	Relatively Low
Landslide	Very Low

Source: FEMA National Risk Index v1.20 (Dec 2025)

Earthquake History

5 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.7.

Oct 20, 1995	8 km SSE of New Effington, South Dakota	M3.7	141 km	5 km
Oct 25, 1990	8 km N of Plankinton, South Dakota	M3.6	118 km	5 km
Jul 26, 2002	0 km WSW of Huron, South Dakota	M3.1	51 km	5 km
Jul 3, 1995	9 km SSW of Fort Thompson, South Dakota	M2.8	149 km	5 km
Jan 16, 2022	9 km NE of Plankinton, South Dakota	M2.5	119 km	5 km

Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tornado History

448 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 5 fatalities, 78 injuries.

Date	Rating	Distance	Path	Fatalities
Jun 18, 2014	EF4	90 km	11.5 mi	0
Jun 24, 2003	EF4	59 km	10.0 mi	0
May 30, 2022	EF3	91 km	13.3 mi	0
Aug 24, 2006	EF3	75 km	24.5 mi	0
Jun 24, 2003	EF3	47 km	3.5 mi	0
Jun 24, 2003	EF3	92 km	6.0 mi	0
May 31, 1996	EF3	85 km	32.0 mi	0
Jun 7, 1993	EF3	53 km	5.0 mi	0
Jun 16, 1992	EF3	81 km	4.0 mi	0
Jun 16, 1992	EF3	87 km	3.0 mi	0
May 12, 1984	EF3	22 km	27.0 mi	0
Jul 18, 1983	EF3	65 km	0.5 mi	0
Jul 1, 1973	EF3	65 km	0.3 mi	1
Jun 25, 1969	EF3	74 km	1.5 mi	0
Jun 21, 1961	EF3	78 km	156.3 mi	1
Jun 9, 1957	EF3	94 km	1.0 mi	0
May 30, 2022	EF2	92 km	12.4 mi	0
May 12, 2022	EF2	94 km	0.4 mi	0
May 12, 2022	EF2	76 km	2.0 mi	0
Aug 30, 2020	EF2	80 km	1.6 mi	1

Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).

Wildfire History

5 wildfires (100+ acres) recorded within 100 km. Largest: GANN VALLEY (2,534 acres, 2000).

Year	Name	Acres Burned	Distance
2000	GANN VALLEY	2,534	100 km
2004	TACOMA PARK PLACE	1,336	85 km
2000	PHEASANT OPENER	1,206	60 km
2009	TAHOHPI WUI RX	1,166	56 km
1992	SPRING LK	1,001	88 km

Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	12°F (-11°C)	0.5 in	Coldest
February	19°F (-7°C)	0.6 in
March	31°F (-0°C)	1.3 in
April	46°F (8°C)	2.1 in
May	58°F (15°C)	2.9 in
June	68°F (20°C)	3.5 in	Wettest
July	71°F (21°C)	2.9 in
August	71°F (22°C)	2.4 in	Warmest
September	61°F (16°C)	1.8 in
October	48°F (9°C)	1.6 in
November	30°F (-1°C)	0.9 in
December	17°F (-8°C)	0.4 in	Driest

Clark Colony has a seasonal temperature swing of 59°F / from 12°F in January to 71°F in August. Total annual precipitation is 20.8 inches, with June being the wettest month (3.5") and December the driest (0.4").

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