Frankfort, SD

Full City Profile · South Dakota · Spink County County

3.2 /5.0

B Good

142 Population 180/sq mi density

$61,875 Median Income $38,224 per capita

$54,600 Home Value $179,301 Zillow

44°F Avg Temperature 276 sunny days/yr

386 Violent Crime/100K 2,427 property/100K

Overall

3.2 / 5.0

Good overall score based on economy, affordability, safety and education

Economy

4.2 / 5.0

$61,875 median income, 2.5% unemployment

A+

Affordability

5.0 / 5.0

$54,600 home value, /mo rent

Safety

1.0 / 5.0

386 violent crimes/100K (1% above avg)

Education

2.4 / 5.0

18.0% bachelor's degree or higher

Frankfort has a cool climate with an average annual temperature of 44°F (7°C). Winters average 13°F in January while summers reach 72°F in July. The area gets 276 sunny days per year. Annual precipitation totals 22.8 inches. Air quality is rated Good with a median AQI of 35.

Temperature

13°F Jan (-11°C) 72°F Jul (22°C)

Annual Average	44.0°F
	19% below US avg
January Average	13°F (-11°C)
July Average	72°F (22°C)
Sunny Days	276 days/yr

Geography

Elevation	1,297 ft (395 m)
Area	0.8 sq mi (2.0 km²)
Population Density	180/sq mi
Coordinates	44.8777°N, 98.3092°W
Timezone	America/Chicago
County	Spink County County
Nearest Airport	Huron Regional (HON) 34 miles away

Precipitation & Snow

Annual Rainfall 22.8"

40% below US avg

Wettest Month (Jun) 3.23"

Driest Month (Jan) 0.35"

Air Quality

AQI Median	35.0
Rating	Good

Natural Hazard Risk

Overall Risk	Very Low
Risk Score	17.7 / 100
Social Vulnerability	10.6 / 100
Community Resilience	61.7 / 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)

Earthquake History

5 earthquakes (M2.5+) within 150 km since 1990. Strongest: M3.6. Most recent: M2.5 on Jan 16, 2022.

Oct 25, 1990	8 km N of Plankinton, South Dakota	M3.6	121 km
Jul 26, 2002	0 km WSW of Huron, South Dakota	M3.1	58 km
Aug 15, 2017	8 km E of Agar, South Dakota	M3.0	130 km
Jul 3, 1995	9 km SSW of Fort Thompson, South Dakota	M2.8	136 km
Jan 16, 2022	9 km NE of Plankinton, South Dakota	M2.5	124 km

Source: USGS (M2.5+, 1990–2025)

Tornado History

414 tornadoes (EF0+) within 100 km since 1950. Strongest: EF4. Total: 5 fatalities, 59 injuries.

Date	Rating	Distance	Fatalities
Jun 18, 2014	EF4	94 km	0
Jun 24, 2003	EF4	79 km	0
Jun 23, 2002	EF4	90 km	0
Aug 24, 2006	EF3	62 km	0
Jun 24, 2003	EF3	98 km	0
Jun 24, 2003	EF3	61 km	0
Jun 23, 2002	EF3	98 km	0
May 31, 1996	EF3	67 km	0
Jun 7, 1993	EF3	35 km	0
May 12, 1984	EF3	46 km	0
Jul 18, 1983	EF3	90 km	0
Jul 1, 1973	EF3	44 km	1
Jul 3, 1971	EF3	99 km	0
Jun 25, 1969	EF3	66 km	0
Jun 21, 1961	EF3	66 km	1
Jun 9, 1957	EF3	67 km	0
Aug 30, 2020	EF2	57 km	1
Jul 4, 2020	EF2	96 km	0
Jun 18, 2014	EF2	92 km	0
Jun 18, 2014	EF2	99 km	0

Source: NOAA SPC (EF0+, 1950–2024)

Wildfire History

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

Year	Name	Acres	Distance
2000	GANN VALLEY	2,534	90 km
2004	TACOMA PARK PLACE	1,336	72 km
2000	PHEASANT OPENER	1,206	60 km
2005	N HYDE	1,204	91 km
2009	TAHOHPI WUI RX	1,166	56 km
1992	SPRING LK	1,001	99 km

Source: NIFC/IRWIN (100+ acres)

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	13°F (-11°C)	0.4 in	Coldest, Driest
February	19°F (-7°C)	0.6 in
March	31°F (-1°C)	1.2 in
April	46°F (8°C)	2.0 in
May	58°F (15°C)	2.8 in
June	68°F (20°C)	3.2 in	Wettest
July	72°F (22°C)	2.7 in	Warmest
August	71°F (22°C)	2.3 in
September	61°F (16°C)	1.7 in
October	48°F (9°C)	1.4 in
November	30°F (-1°C)	0.7 in
December	17°F (-9°C)	0.4 in

Frankfort has a seasonal temperature swing of 59°F / from 13°F in January to 72°F in July. Total annual precipitation is 19.4 inches, with June being the wettest month (3.2") and January the driest (0.4").

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