Weather & Climate in Herrin, IL

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

Herrin enjoys a temperate climate with an average annual temperature of 56°F (13°C). Winters average 32°F in January while summers reach 78°F in July. The area gets 305 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 49.0 inches (wetter than the 38-inch national average). The area receives 11.4 inches of snow annually. Air quality is rated Good with a median AQI of 43. The city sits at an elevation of 420 feet.

Temperature

32°F Jan (0°C) 78°F Jul (26°C)

Annual Average	56.0°F
	4% above US avg
January Average	32°F (0°C)
July Average	78°F (26°C)
Sunny Days	305 days/yr

Geography

Elevation	420 ft (128 m)
Area	9.5 sq mi (24.5 km²)
Population Density	1,269/sq mi
Coordinates	37.7984°N, 89.0307°W
Timezone	America/Chicago
County	Jackson County County
Nearest Airport	Cairo Regional (CIR) 52 miles away

Precipitation & Snow

Annual Rainfall 49.0"

29% above US avg

Snowfall 11.4"

Wettest Month (May) 4.76"

Driest Month (Jan) 2.83"

Air Quality

AQI Median	43.0
Rating	Good

Natural Hazard Risk

Overall Risk	Relatively Moderate
Risk Score	87.1 / 100
Social Vulnerability	76.6 / 100
Community Resilience	65.2 / 100

Hazard Breakdown

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

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

Earthquake History

177 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	124 km	14 km
Sep 26, 1990	4 km SE of Chaffee, Missouri	M4.8	88 km	1 km
Apr 18, 2008	9 km NNE of Bellmont, Illinois	M4.7	125 km	15 km
Jun 18, 2002	6 km SW of Parkers Settlement, Indiana	M4.6	114 km	16 km
Feb 5, 1994	2 km WNW of Dongola, Illinois	M4.2	50 km	16 km
Apr 21, 2008	7 km NNE of Bellmont, Illinois	M4.0	124 km	18 km
Jun 6, 2003	1 km NE of Bardwell, Kentucky	M4.0	102 km	3 km
Feb 21, 2012	4 km SSE of Bertrand, Missouri	M3.9	109 km	8 km
Dec 7, 2000	7 km W of Evansville, Indiana	M3.9	124 km	5 km
Sep 19, 2017	4 km N of Bellmont, Illinois	M3.8	120 km	12 km
Apr 25, 2008	8 km NNE of Bellmont, Illinois	M3.7	125 km	13 km
Mar 2, 2010	2 km ENE of East Prairie, Missouri	M3.7	116 km	8 km
Jan 2, 2006	3 km NNE of Eldorado, Illinois	M3.6	54 km	7 km
Nov 20, 2012	7 km N of Bellmont, Illinois	M3.6	123 km	19 km
Jun 20, 2005	4 km WSW of Blandville, Kentucky	M3.6	97 km	19 km
Mar 15, 2017	9 km ESE of Wyatt, Missouri	M3.6	102 km	8 km
Jun 15, 2004	3 km S of Canalou, Missouri	M3.5	133 km	5 km
Jul 16, 2004	6 km SE of Wyatt, Missouri	M3.5	105 km	4 km
May 1, 2016	5 km SE of New Grand Chain, Illinois	M3.5	65 km	16 km
Mar 2, 1990	9 km NW of Vernon, Illinois	M3.4	118 km	0 km

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

Tornado History

543 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF5. Total: 63 fatalities, 965 injuries.

Date	Rating	Distance	Path	Fatalities
Dec 18, 1957	EF5	37 km	5.4 mi	1
Feb 28, 2017	EF4	86 km	53.5 mi	1
Nov 17, 2013	EF4	78 km	10.6 mi	2
Feb 29, 2012	EF4	35 km	26.1 mi	8
Sep 22, 2006	EF4	72 km	27.5 mi	0
May 6, 2003	EF4	59 km	33.0 mi	2
Jun 2, 1990	EF4	70 km	106.0 mi	1
Jun 2, 1990	EF4	99 km	23.0 mi	0
May 29, 1982	EF4	9 km	17.0 mi	10
Dec 18, 1957	EF4	54 km	16.8 mi	1
Dec 18, 1957	EF4	41 km	28.3 mi	11
May 26, 2024	EF3	24 km	4.9 mi	0
Feb 28, 2017	EF3	89 km	44.1 mi	1
Nov 17, 2013	EF3	97 km	14.1 mi	0
Nov 17, 2013	EF3	79 km	42.5 mi	3
Sep 22, 2006	EF3	70 km	3.5 mi	0
Mar 11, 2006	EF3	85 km	53.5 mi	2
Nov 6, 2005	EF3	96 km	11.2 mi	0
May 6, 2003	EF3	73 km	2.0 mi	0
Apr 28, 2002	EF3	55 km	19.3 mi	1

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

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: UNNAMED (2,286 acres, 2019).

Year	Name	Acres Burned	Distance
2019	UNNAMED	2,286	61 km
2021	RED SHALE UNIT RX	2,123	14 km
2014	UNNAMED	1,627	51 km
2019	ATWOOD RIDGE RX	1,622	51 km
2021	GAP VIEW RX	1,575	58 km
2022	DENNISON HOLLOW RX	1,573	56 km
2021	UNNAMED	1,510	49 km
2022	ONE HORSE GAP RX	1,502	60 km
2014	UNNAMED	1,493	56 km
2015	UNNAMED	1,447	56 km
2021	BEATTY BRANCH RX	1,396	59 km
2020	UNNAMED	1,334	70 km
2016	UNNAMED	1,299	60 km
2024	RED SHALE RX	1,259	15 km
2017	UNNAMED	1,257	61 km
2021	OZARK HILL PRAIRIE RX	1,235	61 km
2014	UNNAMED	1,216	61 km
2019	KINKAID RX	1,215	36 km
2013	UNNAMED	1,203	59 km
2022	KINKAID STATE FISH AND WILDLIFE AREA RX	1,115	36 km

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	32°F (0°C)	2.8 in	Coldest, Driest
February	36°F (2°C)	3.0 in
March	46°F (8°C)	4.7 in
April	56°F (14°C)	4.3 in
May	66°F (19°C)	4.8 in	Wettest
June	74°F (24°C)	4.1 in
July	78°F (26°C)	3.6 in	Warmest
August	77°F (25°C)	3.5 in
September	70°F (21°C)	3.2 in
October	58°F (15°C)	3.0 in
November	47°F (8°C)	4.2 in
December	36°F (2°C)	3.9 in

Herrin has a seasonal temperature swing of 46°F / from 32°F in January to 78°F in July. Total annual precipitation is 45.1 inches, with May being the wettest month (4.8") and January the driest (2.8").

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