Weather & Climate in Iatan, MO

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

Iatan experiences four distinct seasons with an average annual temperature of 54°F (12°C). Winters average 27°F in January while summers reach 78°F in July. The area gets 266 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 38.6 inches. The area receives 3.7 inches of snow annually. Air quality is rated Good with a median AQI of 41. The city sits at an elevation of 846 feet.

Temperature

27°F Jan (-3°C) 78°F Jul (26°C)

Annual Average	54.0°F
	0% below US avg
January Average	27°F (-3°C)
July Average	78°F (26°C)
Sunny Days	266 days/yr

Geography

Elevation	846 ft (258 m)
Area	0.2 sq mi (0.6 km²)
Population Density	159/sq mi
Coordinates	39.4753°N, 94.9827°W
Timezone	America/Chicago
Nearest Airport	Kansas City International (MCI) 19 miles away

Precipitation & Snow

Annual Rainfall 38.6"

2% above US avg

Snowfall 3.7"

Wettest Month (May) 5.08"

Driest Month (Jan) 1.02"

Air Quality

AQI Median	41.0
Rating	Good

Earthquake History

8 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.6.

Dec 17, 2009	2 km NW of Auburn, Nebraska	M3.6	128 km	5 km
Jul 16, 2004	6 km SSE of Riverton, Iowa	M3.5	138 km	5 km
May 18, 2005	Missouri	M3.3	143 km	5 km
Mar 23, 2007	5 km N of Nortonville, Kansas	M3.1	31 km	5 km
Feb 11, 1995	6 km E of Clearmont, Missouri	M3.1	115 km	5 km
May 13, 1999	6 km WSW of Kansas City, Kansas	M3.0	48 km	5 km
Mar 31, 1993	2 km SE of Nemaha, Nebraska	M2.9	110 km	5 km
Jul 15, 2025	3 km W of Hale, Missouri	M2.5	138 km	8 km

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

Tornado History

638 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 17 fatalities, 506 injuries.

Date	Rating	Distance	Path	Fatalities
May 28, 2019	EF4	78 km	29.1 mi	0
May 29, 2004	EF4	77 km	22.0 mi	3
May 4, 2003	EF4	51 km	5.0 mi	0
May 4, 2003	EF4	47 km	21.0 mi	2
May 4, 1977	EF4	65 km	12.0 mi	0
May 4, 1977	EF4	86 km	48.6 mi	0
Apr 23, 1975	EF4	90 km	11.4 mi	1
Jun 8, 1966	EF4	38 km	19.9 mi	1
Aug 6, 1962	EF4	69 km	11.0 mi	0
May 7, 1961	EF4	34 km	26.2 mi	0
May 19, 1960	EF4	89 km	27.5 mi	1
May 22, 1952	EF4	59 km	26.9 mi	0
May 21, 2019	EF3	95 km	5.9 mi	0
Mar 6, 2017	EF3	86 km	17.7 mi	0
May 28, 2013	EF3	100 km	4.4 mi	0
May 2, 2008	EF3	47 km	0.9 mi	0
May 29, 2004	EF3	14 km	7.0 mi	0
Apr 26, 1984	EF3	39 km	32.0 mi	0
May 6, 1983	EF3	100 km	19.0 mi	1
Jun 19, 1981	EF3	61 km	7.7 mi	1

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

Wildfire History

14 wildfires (100+ acres) recorded within 100 km. Largest: UNNAMED (3,244 acres, 1995).

Year	Name	Acres Burned	Distance
1995	UNNAMED	3,244	99 km
2020	BOURBONAIS CREEK	2,803	93 km
2021	345	2,430	97 km
2021	4 DELTA 21	1,708	83 km
2011	182	1,575	83 km
1996	UNNAMED	1,575	97 km
2018	FY 18 182 ROAD BROADCAST BURN	1,009	77 km
2020	MOSQR-FY20-RX-WUI	964	75 km
2012	HIGHWAY E	897	97 km
2016	SQR BM SL DESOTO 2016 WUI RX	866	74 km
1988	NORTH POOL	698	74 km
2020	UNNAMED	645	73 km
2009	UNIT 6	625	72 km
2002	SCRDGRS 6	536	71 km

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	27°F (-3°C)	1.0 in	Coldest, Driest
February	33°F (0°C)	1.2 in
March	44°F (6°C)	2.6 in
April	55°F (13°C)	3.6 in
May	65°F (18°C)	5.1 in	Wettest
June	73°F (23°C)	4.9 in
July	78°F (26°C)	4.3 in	Warmest
August	76°F (25°C)	3.9 in
September	68°F (20°C)	4.8 in
October	57°F (14°C)	3.4 in
November	42°F (6°C)	2.4 in
December	31°F (-0°C)	1.5 in

Iatan has a seasonal temperature swing of 51°F / from 27°F in January to 78°F in July. Total annual precipitation is 38.6 inches, with May being the wettest month (5.1") and January the driest (1.0").

View full profile of Iatan, MO →