Weather & Climate in Wetonka, SD

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

Wetonka has a cool climate with an average annual temperature of 42°F (6°C). Winters average 11°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 21.8 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 1,470 feet.

Temperature

11°F Jan (-12°C) 71°F Jul (22°C)

Annual Average	42.2°F
	22% below US avg
January Average	11°F (-12°C)
July Average	71°F (22°C)
Sunny Days	276 days/yr

Geography

Elevation	1,470 ft (448 m)
Area	0.3 sq mi (0.6 km²)
Population Density	56/sq mi
Coordinates	45.6242°N, 98.7717°W
Timezone	America/Chicago
County	Brown County County
Nearest Airport	Aberdeen Regional (ABR) 21 miles away

Precipitation & Snow

Annual Rainfall 21.8"

43% below US avg

Wettest Month (Jun) 3.39"

Driest Month (Dec) 0.39"

Air Quality

AQI Median	35.0
Rating	Good

Natural Hazard Risk

Overall Risk	Relatively Low
Risk Score	73.5 / 100
Social Vulnerability	24.1 / 100
Community Resilience	85.6 / 100

Hazard Breakdown

Tornado	Relatively Moderate
Earthquake	Very Low
Wildfire	Relatively Low
Flood	Relatively Low
Hail	Relatively Moderate
Strong Wind	Relatively Moderate
Heat Wave	Relatively Low
Winter Weather	Very High
Lightning	Very Low
Ice Storm	Relatively Moderate
Drought	Very Low
Cold Wave	Relatively High
Landslide	Very Low

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

Earthquake History

3 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	149 km	5 km
Jul 26, 2002	0 km WSW of Huron, South Dakota	M3.1	147 km	5 km
Aug 15, 2017	8 km E of Agar, South Dakota	M3.0	128 km	5 km

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

Tornado History

357 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 6 fatalities, 59 injuries.

Date	Rating	Distance	Path	Fatalities
May 22, 2010	EF4	79 km	5.7 mi	0
Jun 23, 2002	EF4	27 km	9.0 mi	0
Jul 17, 2011	EF3	97 km	16.2 mi	0
Aug 24, 2006	EF3	71 km	14.0 mi	0
Jun 23, 2002	EF3	17 km	10.0 mi	0
May 31, 1996	EF3	29 km	32.0 mi	0
Aug 19, 1974	EF3	86 km	0.1 mi	0
Jul 1, 1973	EF3	89 km	0.1 mi	0
Jul 1, 1973	EF3	47 km	0.3 mi	1
Jun 25, 1969	EF3	57 km	1.5 mi	0
Jun 20, 1968	EF3	99 km	0.1 mi	0
Jul 31, 1966	EF3	68 km	26.4 mi	2
May 20, 1965	EF3	40 km	3.8 mi	0
Jun 21, 1961	EF3	46 km	156.3 mi	1
Jun 9, 1957	EF3	72 km	1.0 mi	0
Jul 4, 2020	EF2	5 km	2.7 mi	0
Jul 10, 2011	EF2	84 km	26.0 mi	0
May 22, 2010	EF2	21 km	18.6 mi	0
May 22, 2010	EF2	45 km	1.3 mi	0
Jun 29, 2005	EF2	96 km	8.0 mi	0

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

Wildfire History

6 wildfires (100+ acres) recorded within 100 km. Largest: ROHRBACH (2,887 acres, 2022).

Year	Name	Acres Burned	Distance
2022	ROHRBACH	2,887	63 km
2003	JOEL BERTSCH 2	1,460	63 km
2004	TACOMA PARK PLACE	1,336	42 km
2004	ALLEN STUECKLE	1,330	74 km
2016	SLR 2016 RX MICHELL	1,242	54 km
2000	PHEASANT OPENER	1,206	77 km

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	11°F (-12°C)	0.5 in	Coldest
February	18°F (-8°C)	0.5 in
March	29°F (-1°C)	1.3 in
April	44°F (7°C)	2.2 in
May	57°F (14°C)	2.7 in
June	66°F (19°C)	3.4 in	Wettest
July	71°F (22°C)	2.7 in	Warmest
August	70°F (21°C)	2.2 in
September	59°F (15°C)	1.8 in
October	46°F (8°C)	1.3 in
November	29°F (-2°C)	0.7 in
December	16°F (-9°C)	0.4 in	Driest

Wetonka has a seasonal temperature swing of 60°F / from 11°F in January to 71°F in July. Total annual precipitation is 19.6 inches, with June being the wettest month (3.4") and December the driest (0.4").

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