Larchwood, IA

Full City Profile · Iowa · Lyon County County

3.4 /5.0

B Good

1,076 Population 1,035/sq mi density

$69,327 Median Income $34,668 per capita

$189,700 Home Value $317,980 Zillow

$854 Median Rent 24.9% income on rent

46°F Avg Temperature 291 sunny days/yr

78 Violent Crime/100K 940 property/100K

Overall

3.4 / 5.0

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

Economy

4.4 / 5.0

$69,327 median income, 1.2% unemployment

A+

Affordability

5.0 / 5.0

$189,700 home value, $854/mo rent

Safety

1.0 / 5.0

78 violent crimes/100K

Education

3.0 / 5.0

25.4% bachelor's degree or higher

Larchwood experiences four distinct seasons with an average annual temperature of 46°F (8°C). Winters average 16°F in January while summers reach 73°F in July. The area gets 291 sunny days per year. Annual precipitation totals 29.3 inches. The area receives 34.9 inches of snow annually. Air quality is rated Good with a median AQI of 43.

Temperature

16°F Jan (-9°C) 73°F Jul (23°C)

Annual Average	46.0°F
	15% below US avg
January Average	16°F (-9°C)
July Average	73°F (23°C)
Sunny Days	291 days/yr

Geography

Elevation	1,467 ft (447 m)
Area	1.0 sq mi (2.6 km²)
Population Density	1,035/sq mi
Coordinates	43.4546°N, 96.4363°W
Timezone	America/Chicago
County	Lyon County County
Nearest Airport	Joe Foss Field (FSD) 18 miles away

Precipitation & Snow

Annual Rainfall 29.3"

23% below US avg

Snowfall 34.9"

Wettest Month (Jun) 3.90"

Driest Month (Jan) 0.47"

Air Quality

AQI Median	43.0
Rating	Good

Natural Hazard Risk

Overall Risk	Very Low
Risk Score	19.2 / 100
Social Vulnerability	10.6 / 100
Community Resilience	79.4 / 100

Hazard Breakdown

Tornado	Relatively Low
Earthquake	Very Low
Wildfire	Very Low
Flood	Very Low
Hail	Relatively Moderate
Strong Wind	Relatively Low
Heat Wave	Very Low
Winter Weather	Relatively Moderate
Lightning	Very Low
Ice Storm	Relatively Moderate
Drought	Relatively Moderate
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: M3.6. Most recent: M2.5 on Mar 6, 2024.

Feb 6, 1996	1 km N of Wausa, Nebraska	M3.6	138 km
Jan 4, 2021	5 km N of Tyndall, South Dakota	M3.1	124 km
Jun 30, 2021	4 km E of Rembrandt, Iowa	M2.7	129 km
Mar 6, 2024	6 km SSE of Santee, Nebraska	M2.5	134 km

Source: USGS (M2.5+, 1990–2025)

Tornado History

641 tornadoes (EF0+) within 100 km since 1950. Strongest: EF5. Total: 15 fatalities, 285 injuries.

Date	Rating	Distance	Fatalities
Jun 16, 1992	EF5	51 km	1
Jun 13, 1968	EF5	97 km	9
Jun 25, 2010	EF4	39 km	0
Mar 29, 1998	EF4	91 km	1
Jun 7, 1993	EF4	83 km	0
Jun 7, 1993	EF4	49 km	0
Jun 16, 1992	EF4	70 km	0
Jul 28, 1986	EF4	96 km	0
Jun 7, 1965	EF4	72 km	1
Jun 23, 1952	EF4	92 km	0
Aug 7, 1994	EF3	47 km	0
Jun 7, 1993	EF3	78 km	0
Jun 7, 1993	EF3	64 km	0
Jun 7, 1993	EF3	74 km	0
May 7, 1993	EF3	72 km	0
Jun 16, 1992	EF3	87 km	0
Apr 20, 1985	EF3	56 km	0
Aug 3, 1981	EF3	61 km	0
Jul 5, 1978	EF3	31 km	0
Oct 1, 1971	EF3	91 km	0

Source: NOAA SPC (EF0+, 1950–2024)

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	16°F (-9°C)	0.5 in	Coldest, Driest
February	21°F (-6°C)	0.5 in
March	33°F (1°C)	1.7 in
April	47°F (8°C)	2.6 in
May	59°F (15°C)	3.2 in
June	69°F (20°C)	3.9 in	Wettest
July	73°F (23°C)	3.2 in	Warmest
August	70°F (21°C)	3.3 in
September	61°F (16°C)	2.7 in
October	49°F (9°C)	2.0 in
November	32°F (-0°C)	1.3 in
December	19°F (-7°C)	0.6 in

Larchwood has a seasonal temperature swing of 58°F / from 16°F in January to 73°F in July. Total annual precipitation is 25.4 inches, with June being the wettest month (3.9") and January the driest (0.5").

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