Sign In Register

Weather & Climate in Stockton, IL

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

Stockton experiences four distinct seasons with an average annual temperature of 48°F (9°C). Winters average 19°F in January while summers reach 72°F in July. The area gets 260 sunny days per year, above the national average. Annual precipitation totals 39.4 inches. The area receives 30.2 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 975 feet.

Temperature

19°F Jan (-7°C) 72°F Jul (22°C)
Annual Average47.5°F
12% below US avg
January Average19°F (-7°C)
July Average72°F (22°C)
Sunny Days260 days/yr

Geography

Elevation975 ft (297 m)
Area1.6 sq mi (4.1 km²)
Population Density993/sq mi
Coordinates42.3525°N, 90.0020°W
TimezoneAmerica/Chicago
CountyJo Daviess County County
Nearest AirportDubuque Regional (DBQ)
36 miles away

Precipitation & Snow

Annual Rainfall 39.4"
4% above US avg
Snowfall 30.2"
Wettest Month (Jun) 4.25"
Driest Month (Jan) 1.18"

Air Quality

AQI Median43.0
RatingGood

Natural Hazard Risk

Overall RiskRelatively Low
Risk Score51.3 / 100
Social Vulnerability48.8 / 100
Community Resilience59.5 / 100

Hazard Breakdown

Tornado Relatively Moderate
Hurricane Very Low
Earthquake Very Low
Wildfire Very Low
Flood Relatively Low
Hail Relatively Moderate
Strong Wind Relatively Moderate
Heat Wave Relatively Low
Winter Weather Relatively Low
Lightning Very Low
Ice Storm Relatively Low
Drought Relatively Moderate
Cold Wave Relatively Moderate
Landslide Relatively Moderate
Source: FEMA National Risk Index v1.20 (Dec 2025)

Earthquake History

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

Jun 28, 2004 12 km NW of Dayton, Illinois M4.2 135 km 10 km
Feb 10, 2010 2 km NW of Lily Lake, Illinois M3.8 131 km 10 km
Sep 2, 1999 8 km W of Amboy, Illinois M3.5 85 km 5 km
Jul 15, 2024 2 km WNW of Somonauk, Illinois M3.1 132 km 10 km
Mar 25, 2015 3 km WNW of Lake in the Hills, Illinois M2.9 136 km 6 km
Jun 10, 2013 4 km NNE of Virgil, Illinois M2.6 130 km 5 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tornado History

550 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF5. Total: 44 fatalities, 940 injuries.

Date Rating Distance Path Fatalities
Jun 7, 1984 EF5 69 km 36.0 mi 9
Apr 9, 2015 EF4 81 km 30.1 mi 2
Jul 3, 1983 EF4 70 km 0.5 mi 0
Mar 29, 1981 EF4 75 km 5.1 mi 0
Apr 21, 1967 EF4 90 km 25.5 mi 24
Apr 11, 1965 EF4 95 km 91.5 mi 1
Jun 16, 2014 EF3 81 km 1.0 mi 0
Jan 7, 2008 EF3 96 km 13.2 mi 0
Aug 18, 2005 EF3 79 km 18.6 mi 1
Jun 19, 1993 EF3 59 km 14.0 mi 0
Jul 13, 1992 EF3 95 km 5.0 mi 0
Jun 17, 1992 EF3 70 km 16.0 mi 0
Mar 13, 1990 EF3 87 km 15.5 mi 0
May 8, 1988 EF3 93 km 32.0 mi 0
May 8, 1988 EF3 32 km 16.0 mi 0
Aug 5, 1979 EF3 51 km 5.7 mi 0
Jun 20, 1974 EF3 47 km 10.6 mi 1
May 13, 1974 EF3 95 km 3.6 mi 0
Sep 9, 1970 EF3 57 km 4.7 mi 0
Aug 2, 1967 EF3 98 km 0.1 mi 2
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).

Wildfire History

1 wildfire (100+ acres) recorded within 100 km. Largest: COLD SPRINGS (552 acres, 2009).

Year Name Acres Burned Distance
2009 COLD SPRINGS 552 47 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month Avg Temperature Precipitation Summary
January 19°F (-7°C) 1.2 in Coldest, Driest
February 23°F (-5°C) 1.2 in
March 34°F (1°C) 2.4 in
April 47°F (8°C) 3.4 in
May 59°F (15°C) 3.6 in
June 68°F (20°C) 4.3 in Wettest
July 72°F (22°C) 3.7 in Warmest
August 70°F (21°C) 4.3 in
September 62°F (16°C) 3.9 in
October 50°F (10°C) 2.6 in
November 36°F (2°C) 2.5 in
December 23°F (-5°C) 1.7 in

Stockton has a seasonal temperature swing of 53°F / from 19°F in January to 72°F in July. Total annual precipitation is 34.8 inches, with June being the wettest month (4.3") and January the driest (1.2").

View full profile of Stockton, IL →