Weather & Climate in Iuka, IL

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

Iuka experiences four distinct seasons with an average annual temperature of 55°F (13°C). Winters average 30°F in January while summers reach 78°F in July. The area gets 293 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 45.9 inches (wetter than the 38-inch national average). The area receives 10.2 inches of snow annually. Air quality is rated Good with a median AQI of 43. The city sits at an elevation of 515 feet.

Temperature

30°F Jan (-1°C) 78°F Jul (25°C)

Annual Average	54.9°F
	2% above US avg
January Average	30°F (-1°C)
July Average	78°F (25°C)
Sunny Days	293 days/yr

Geography

Elevation	515 ft (157 m)
Area	0.7 sq mi (1.9 km²)
Population Density	618/sq mi
Coordinates	38.6178°N, 88.7883°W
Timezone	America/Chicago
County	Marion County County
Nearest Airport	Lawrenceville-Vincennes International (LWV) 65 miles away

Precipitation & Snow

Annual Rainfall 45.9"

21% above US avg

Snowfall 10.2"

Wettest Month (May) 4.37"

Driest Month (Jan) 2.17"

Air Quality

AQI Median	43.0
Rating	Good

Natural Hazard Risk

Overall Risk	Relatively Low
Risk Score	77.1 / 100
Social Vulnerability	68.6 / 100
Community Resilience	96.5 / 100

Hazard Breakdown

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

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

Earthquake History

69 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.2.

Apr 18, 2008	7 km NNE of Bellmont, Illinois	M5.2	81 km	14 km
Apr 18, 2008	9 km NNE of Bellmont, Illinois	M4.7	82 km	15 km
Jun 18, 2002	6 km SW of Parkers Settlement, Indiana	M4.6	113 km	16 km
Feb 5, 1994	2 km WNW of Dongola, Illinois	M4.2	143 km	16 km
Apr 21, 2008	7 km NNE of Bellmont, Illinois	M4.0	82 km	18 km
Dec 7, 2000	7 km W of Evansville, Indiana	M3.9	124 km	5 km
Nov 11, 1991	3 km W of Flat Rock, Illinois	M3.8	99 km	0 km
Sep 19, 2017	4 km N of Bellmont, Illinois	M3.8	79 km	12 km
Apr 25, 2008	8 km NNE of Bellmont, Illinois	M3.7	82 km	13 km
Nov 20, 2012	7 km N of Bellmont, Illinois	M3.6	79 km	19 km
Jan 2, 2006	3 km NNE of Eldorado, Illinois	M3.6	92 km	7 km
May 30, 2015	4 km ENE of Geff, Illinois	M3.4	41 km	26 km
Mar 2, 1990	9 km NW of Vernon, Illinois	M3.4	42 km	0 km
Jun 5, 2008	8 km WNW of Mount Carmel, Illinois	M3.4	84 km	16 km
May 1, 2008	8 km NNE of Bellmont, Illinois	M3.3	83 km	14 km
May 13, 2025	7 km SSW of Lerna, Illinois	M3.3	92 km	10 km
Jan 29, 1993	7 km WNW of Brownstown, Illinois	M3.2	51 km	5 km
Dec 27, 1992	2 km E of Pocahontas, Missouri	M3.2	144 km	10 km
May 2, 2003	10 km ENE of Thompsonville, Illinois	M3.2	73 km	0 km
Oct 24, 1990	5 km ENE of Woodlawn, Illinois	M3.2	34 km	1 km

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

Tornado History

477 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF5. Total: 46 fatalities, 714 injuries.

Date	Rating	Distance	Path	Fatalities
Dec 18, 1957	EF5	72 km	5.4 mi	1
Nov 17, 2013	EF4	62 km	10.6 mi	2
Jun 2, 1990	EF4	49 km	106.0 mi	1
Jun 2, 1990	EF4	58 km	12.5 mi	0
Jun 2, 1990	EF4	28 km	23.0 mi	0
Jan 7, 1989	EF4	89 km	19.0 mi	0
May 29, 1982	EF4	96 km	17.0 mi	10
Dec 18, 1957	EF4	45 km	16.8 mi	1
Mar 31, 2023	EF3	71 km	40.9 mi	6
Feb 28, 2017	EF3	79 km	44.1 mi	1
Apr 21, 2002	EF3	30 km	31.5 mi	1
Apr 19, 1996	EF3	52 km	17.0 mi	0
Nov 19, 1991	EF3	100 km	1.5 mi	0
Dec 2, 1982	EF3	80 km	10.5 mi	2
Aug 21, 1977	EF3	91 km	26.9 mi	6
Jul 28, 1976	EF3	80 km	0.1 mi	0
Aug 10, 1974	EF3	67 km	0.1 mi	0
Apr 1, 1974	EF3	93 km	3.3 mi	0
May 15, 1968	EF3	100 km	2.0 mi	4
Mar 6, 1961	EF3	58 km	21.2 mi	0

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	30°F (-1°C)	2.2 in	Coldest, Driest
February	33°F (1°C)	2.4 in
March	44°F (7°C)	4.1 in
April	55°F (13°C)	4.0 in
May	64°F (18°C)	4.4 in	Wettest
June	73°F (23°C)	4.0 in
July	78°F (25°C)	3.8 in	Warmest
August	75°F (24°C)	3.1 in
September	68°F (20°C)	3.0 in
October	57°F (14°C)	3.0 in
November	45°F (7°C)	3.9 in
December	34°F (1°C)	3.5 in

Iuka has a seasonal temperature swing of 48°F / from 30°F in January to 78°F in July. Total annual precipitation is 41.5 inches, with May being the wettest month (4.4") and January the driest (2.2").

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