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Weather & Climate in Milan, IL

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

Milan experiences four distinct seasons with an average annual temperature of 51°F (11°C). Winters average 23°F in January while summers reach 76°F in July. The area gets 275 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 38.3 inches. The area receives 36.1 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 673 feet.

Temperature

23°F Jan (-5°C) 76°F Jul (24°C)
Annual Average51.2°F
5% below US avg
January Average23°F (-5°C)
July Average76°F (24°C)
Sunny Days275 days/yr

Geography

Elevation673 ft (205 m)
Area6.5 sq mi (16.7 km²)
Population Density805/sq mi
Coordinates41.4355°N, 90.5627°W
TimezoneAmerica/Chicago
CountyRock Island County County
Nearest AirportQuad Cities International (MLI)
3 miles away

Precipitation & Snow

Annual Rainfall 38.3"
1% above US avg
Snowfall 36.1"
Wettest Month (Jul) 4.57"
Driest Month (Feb) 1.14"

Air Quality

AQI Median43.0
RatingGood

Natural Hazard Risk

Overall RiskRelatively Moderate
Risk Score84.1 / 100
Social Vulnerability60.2 / 100
Community Resilience87.3 / 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 Moderate
Winter Weather Relatively High
Lightning Relatively High
Ice Storm Relatively Moderate
Drought Relatively Moderate
Cold Wave Relatively High
Landslide Relatively Low
Source: FEMA National Risk Index v1.20 (Dec 2025)

Earthquake History

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

Jun 28, 2004 12 km NW of Dayton, Illinois M4.2 139 km 10 km
Sep 2, 1999 8 km W of Amboy, Illinois M3.5 99 km 5 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Tornado History

635 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 6 fatalities, 246 injuries.

Date Rating Distance Path Fatalities
Mar 29, 1981 EF4 58 km 5.1 mi 0
Jun 29, 1976 EF4 98 km 4.9 mi 0
Apr 11, 1965 EF4 55 km 91.5 mi 1
Jun 1, 2007 EF3 56 km 15.8 mi 0
May 15, 1998 EF3 99 km 47.0 mi 0
May 9, 1995 EF3 30 km 10.0 mi 0
May 9, 1995 EF3 65 km 22.0 mi 0
Jun 19, 1993 EF3 99 km 14.0 mi 0
Jul 13, 1992 EF3 95 km 5.0 mi 0
Mar 13, 1990 EF3 30 km 15.5 mi 0
May 8, 1988 EF3 39 km 32.0 mi 0
Aug 15, 1978 EF3 26 km 6.4 mi 0
Mar 4, 1976 EF3 87 km 0.8 mi 0
Jun 13, 1975 EF3 88 km 6.6 mi 0
Jun 20, 1974 EF3 65 km 10.6 mi 1
Jun 14, 1974 EF3 11 km 48.6 mi 0
May 13, 1974 EF3 21 km 3.6 mi 0
Jul 17, 1972 EF3 88 km 81.5 mi 0
Jan 24, 1967 EF3 81 km 7.4 mi 0
Apr 19, 1966 EF3 9 km 2.0 mi 0
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).

Wildfire History

5 wildfires (100+ acres) recorded within 100 km. Largest: UNIT 3 (1,206 acres, 1999).

Year Name Acres Burned Distance
1999 UNIT 3 1,206 57 km
2002 HSB 03 2 1,130 57 km
2000 DESTRUST A 756 57 km
2006 HSB 003 674 57 km
2004 HSB 009 608 57 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month Avg Temperature Precipitation Summary
January 23°F (-5°C) 1.4 in Coldest
February 27°F (-3°C) 1.1 in Driest
March 38°F (3°C) 2.6 in
April 50°F (10°C) 3.7 in
May 61°F (16°C) 3.9 in
June 71°F (22°C) 4.3 in
July 76°F (24°C) 4.6 in Warmest, Wettest
August 73°F (23°C) 4.0 in
September 65°F (18°C) 3.8 in
October 53°F (12°C) 2.7 in
November 39°F (4°C) 2.4 in
December 26°F (-3°C) 2.0 in

Milan has a seasonal temperature swing of 52°F / from 23°F in January to 76°F in July. Total annual precipitation is 36.5 inches, with July being the wettest month (4.6") and February the driest (1.1").

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