Weather & Climate in Hebron, IL

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

Hebron experiences four distinct seasons with an average annual temperature of 49°F (9°C). Winters average 22°F in January while summers reach 73°F in July. The area gets 260 sunny days per year, above the national average. Annual precipitation totals 37.0 inches. The area receives 34.5 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 925 feet.

Temperature

22°F Jan (-6°C) 73°F Jul (23°C)

Annual Average	48.6°F
	10% below US avg
January Average	22°F (-6°C)
July Average	73°F (23°C)
Sunny Days	260 days/yr

Geography

Elevation	925 ft (282 m)
Area	0.8 sq mi (1.9 km²)
Population Density	744/sq mi
Coordinates	42.4654°N, 88.4344°W
Timezone	America/Chicago
County	McHenry County County
Nearest Airport	Kenosha Regional (ENW) 27 miles away

Precipitation & Snow

Annual Rainfall 37.0"

3% below US avg

Snowfall 34.5"

Wettest Month (Jul) 4.13"

Driest Month (Feb) 1.26"

Air Quality

AQI Median	43.0
Rating	Good

Natural Hazard Risk

Overall Risk	Relatively Moderate
Risk Score	90.8 / 100
Social Vulnerability	10.6 / 100
Community Resilience	84.0 / 100

Hazard Breakdown

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

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

Earthquake History

7 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.2.

Jun 28, 2004	12 km NW of Dayton, Illinois	M4.2	118 km	10 km
Feb 10, 2010	2 km NW of Lily Lake, Illinois	M3.8	55 km	10 km
Sep 2, 1999	8 km W of Amboy, Illinois	M3.5	117 km	5 km
Nov 4, 2013	1 km SSW of Lyons, Illinois	M3.2	90 km	1 km
Jul 15, 2024	2 km WNW of Somonauk, Illinois	M3.1	94 km	10 km
Mar 25, 2015	3 km WNW of Lake in the Hills, Illinois	M2.9	31 km	6 km
Jun 10, 2013	4 km NNE of Virgil, Illinois	M2.6	53 km	5 km

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

Tornado History

546 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF5. Total: 76 fatalities, 1,686 injuries.

Date	Rating	Distance	Path	Fatalities
Aug 28, 1990	EF5	88 km	16.4 mi	29
Apr 9, 2015	EF4	98 km	30.1 mi	2
Apr 27, 1984	EF4	58 km	6.5 mi	1
Jun 13, 1976	EF4	95 km	3.3 mi	2
Sep 28, 1972	EF4	51 km	5.2 mi	0
Apr 21, 1967	EF4	38 km	8.8 mi	1
Apr 21, 1967	EF4	48 km	25.5 mi	24
Apr 11, 1965	EF4	28 km	9.1 mi	6
Jun 20, 2021	EF3	83 km	17.6 mi	0
Jan 7, 2008	EF3	13 km	10.8 mi	0
Jan 7, 2008	EF3	34 km	13.2 mi	0
Aug 18, 2005	EF3	96 km	18.6 mi	1
Jun 5, 1980	EF3	79 km	10.7 mi	0
Mar 12, 1976	EF3	93 km	22.6 mi	0
Jan 24, 1967	EF3	78 km	24.9 mi	0
Jul 19, 1963	EF3	20 km	10.6 mi	0
Jun 22, 2024	EF2	58 km	6.0 mi	0
Feb 8, 2024	EF2	79 km	25.9 mi	0
Nov 22, 2010	EF2	47 km	18.1 mi	0
Jul 22, 2010	EF2	48 km	1.0 mi	0

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

Wildfire History

2 wildfires (100+ acres) recorded within 100 km. Largest: IBSP SOUTH F1 RX (690 acres, 2024).

Year	Name	Acres Burned	Distance
2024	IBSP SOUTH F1 RX	690	51 km
2024	RX-HWY Y - SOUTH	553	61 km

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	22°F (-6°C)	1.5 in	Coldest
February	24°F (-5°C)	1.3 in	Driest
March	35°F (1°C)	2.5 in
April	47°F (8°C)	3.6 in
May	58°F (14°C)	3.5 in
June	68°F (20°C)	4.1 in
July	73°F (23°C)	4.1 in	Warmest, Wettest
August	70°F (21°C)	4.1 in
September	62°F (17°C)	3.9 in
October	50°F (10°C)	2.6 in
November	37°F (3°C)	2.7 in
December	25°F (-4°C)	2.1 in

Hebron has a seasonal temperature swing of 51°F / from 22°F in January to 73°F in July. Total annual precipitation is 36.0 inches, with July being the wettest month (4.1") and February the driest (1.3").

View full profile of Hebron, IL →