Weather & Climate in Sloan, IA

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

Sloan experiences four distinct seasons with an average annual temperature of 49°F (9°C). Winters average 19°F in January while summers reach 74°F in July. The area gets 291 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 29.9 inches (drier than the 38-inch national average). The area receives 31.0 inches of snow annually, a moderate snowfall amount. Air quality is rated Good with a median AQI of 43. The city sits at an elevation of 1,073 feet.

Temperature

19°F Jan (-7°C) 74°F Jul (24°C)

Annual Average	48.5°F
	10% below US avg
January Average	19°F (-7°C)
July Average	74°F (24°C)
Sunny Days	291 days/yr

Geography

Elevation	1,073 ft (327 m)
Area	0.6 sq mi (1.6 km²)
Population Density	1,524/sq mi
Coordinates	42.2331°N, 96.2248°W
Timezone	America/Chicago
County	Woodbury County County
Nearest Airport	Sioux Gateway/Brig General Bud Day Field (SUX) 14 miles away

Precipitation & Snow

Annual Rainfall 29.9"

21% below US avg

Snowfall 31.0"

Wettest Month (Jun) 4.02"

Driest Month (Jan) 0.59"

Air Quality

AQI Median	43.0
Rating	Good

Natural Hazard Risk

Overall Risk	Relatively Moderate
Risk Score	83.3 / 100
Social Vulnerability	39.4 / 100
Community Resilience	87.8 / 100

Hazard Breakdown

Tornado	Relatively High
Earthquake	Very Low
Wildfire	Relatively Low
Flood	Relatively Moderate
Hail	Relatively High
Strong Wind	Relatively High
Heat Wave	Relatively Moderate
Winter Weather	Relatively High
Lightning	Relatively Low
Ice Storm	Relatively High
Drought	Relatively Moderate
Cold Wave	Relatively Moderate
Landslide	Relatively 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: M3.6.

Feb 6, 1996	1 km N of Wausa, Nebraska	M3.6	113 km	5 km
Aug 9, 1997	9 km NW of Clarkson, Nebraska	M3.4	93 km	5 km
Feb 5, 2025	8 km SSE of Tilden, Nebraska	M2.7	133 km	5 km
Jun 30, 2021	4 km E of Rembrandt, Iowa	M2.7	113 km	10 km
Mar 6, 2024	6 km SSE of Santee, Nebraska	M2.5	144 km	5 km

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

Tornado History

569 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 12 fatalities, 236 injuries.

Date	Rating	Distance	Path	Fatalities
Jun 16, 2014	EF4	82 km	23.9 mi	1
Jun 16, 2014	EF4	54 km	15.8 mi	0
Jun 16, 2014	EF4	73 km	11.5 mi	1
Jun 16, 2014	EF4	99 km	12.1 mi	0
Oct 4, 2013	EF4	71 km	18.3 mi	0
Oct 4, 2013	EF4	15 km	24.7 mi	0
Jun 23, 2003	EF4	95 km	13.0 mi	1
Jul 28, 1986	EF4	79 km	52.5 mi	0
Jul 7, 1977	EF4	40 km	22.6 mi	0
Jun 23, 1952	EF4	65 km	24.1 mi	0
Jul 15, 1950	EF4	57 km	10.0 mi	0
Jun 17, 2014	EF3	91 km	4.0 mi	0
Apr 9, 2011	EF3	34 km	3.4 mi	0
Apr 9, 2011	EF3	78 km	10.1 mi	0
Apr 9, 2011	EF3	96 km	29.4 mi	0
Jun 11, 2008	EF3	49 km	14.2 mi	4
May 16, 1999	EF3	72 km	6.2 mi	0
May 16, 1999	EF3	76 km	7.5 mi	2
Jul 5, 1994	EF3	12 km	1.8 mi	0
Jun 16, 1992	EF3	74 km	26.0 mi	0

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

Wildfire History

1 wildfire (100+ acres) recorded within 100 km. Largest: UNNAMED (629 acres, 2010).

Year	Name	Acres Burned	Distance
2010	UNNAMED	629	97 km

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	19°F (-7°C)	0.6 in	Coldest, Driest
February	26°F (-3°C)	0.7 in
March	37°F (3°C)	2.0 in
April	50°F (10°C)	2.8 in
May	62°F (17°C)	3.9 in
June	71°F (22°C)	4.0 in	Wettest
July	74°F (24°C)	3.4 in	Warmest
August	73°F (23°C)	3.1 in
September	64°F (18°C)	2.9 in
October	52°F (11°C)	2.1 in
November	36°F (2°C)	1.3 in
December	23°F (-5°C)	0.8 in

Sloan has a seasonal temperature swing of 55°F / from 19°F in January to 74°F in July. Total annual precipitation is 27.5 inches, with June being the wettest month (4.0") and January the driest (0.6").

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