Weather & Climate in Rome, IL

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

Rome experiences four distinct seasons with an average annual temperature of 53°F (11°C). Winters average 26°F in January while summers reach 76°F in July. Annual precipitation totals 36.4 inches. The area receives 20.0 inches of snow annually, a moderate snowfall amount. Air quality is rated Good with a median AQI of 44. 69% of days have good air quality. The city sits at an elevation of 488 feet.

Temperature

26°F Jan (-3°C) 76°F Jul (24°C)
Annual Average52.6°F
3% below US avg
January Average26°F (-3°C)
July Average76°F (24°C)

Geography

Elevation488 ft (149 m)
Area1.9 sq mi (5.0 km²)
Population Density848/sq mi
Coordinates40.8774°N, 89.5132°W
TimezoneAmerica/Chicago
CountyPeoria County County
Nearest AirportGeneral Downing - Peoria International (PIA)
17 miles away

Precipitation & Snow

Annual Rainfall 36.4"
4% below US avg
Snowfall 20.0"
Wettest Month (May) 5.04"
Driest Month (Feb) 1.92"

Air Quality

AQI Median44.0
RatingGood
Good Days %68.6%
Unhealthy Days0

Natural Hazard Risk

Overall RiskRelatively Moderate
Risk Score90.7 / 100
Social Vulnerability50.0 / 100
Community Resilience93.6 / 100

Hazard Breakdown

Tornado Relatively High
Hurricane Very Low
Earthquake Relatively Low
Wildfire Very Low
Flood Relatively Moderate
Hail Relatively High
Strong Wind Relatively High
Heat Wave Relatively Moderate
Winter Weather Relatively High
Lightning Relatively High
Ice Storm Relatively High
Drought Relatively Moderate
Cold Wave Relatively High
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 83 km 10 km
Feb 10, 2010 2 km NW of Lily Lake, Illinois M3.8 148 km 10 km
Sep 2, 1999 8 km W of Amboy, Illinois M3.5 94 km 5 km
Jul 15, 2024 2 km WNW of Somonauk, Illinois M3.1 109 km 10 km
Jun 10, 2013 4 km NNE of Virgil, Illinois M2.6 149 km 5 km
Mar 15, 2025 6 km W of Dwight, Illinois M2.6 88 km 5 km
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.

Tornado History

680 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 24 fatalities, 587 injuries.

Date Rating Distance Path Fatalities
Nov 17, 2013 EF4 29 km 46.4 mi 3
Jul 13, 2004 EF4 18 km 9.6 mi 0
May 13, 1995 EF4 87 km 7.0 mi 0
Mar 29, 1981 EF4 96 km 5.1 mi 0
May 5, 1977 EF4 73 km 7.3 mi 0
Jun 29, 1976 EF4 22 km 4.9 mi 0
Apr 4, 2023 EF3 92 km 19.9 mi 0
Feb 28, 2017 EF3 13 km 17.8 mi 0
Feb 28, 2017 EF3 69 km 11.5 mi 2
Jun 5, 2010 EF3 70 km 8.6 mi 0
Apr 20, 2004 EF3 46 km 15.8 mi 8
May 10, 2003 EF3 47 km 17.5 mi 0
Apr 19, 1996 EF3 64 km 9.4 mi 0
May 13, 1995 EF3 62 km 25.0 mi 0
May 9, 1995 EF3 53 km 22.0 mi 0
Jun 30, 1977 EF3 89 km 6.1 mi 0
Mar 4, 1976 EF3 36 km 0.8 mi 0
Jul 23, 1975 EF3 78 km 11.1 mi 0
Jul 23, 1975 EF3 66 km 14.0 mi 2
Jun 13, 1975 EF3 66 km 6.6 mi 0
Source: NOAA Storm Prediction Center (EF0+, 1950-2024, US only).

Monthly Weather

Month Avg Temperature Precipitation Summary
January 26°F (-3°C) 2.1 in Coldest
February 30°F (-1°C) 1.9 in Driest
March 41°F (5°C) 2.6 in
April 53°F (12°C) 3.9 in
May 63°F (17°C) 5.0 in Wettest
June 73°F (23°C) 3.5 in
July 76°F (24°C) 3.5 in Warmest
August 74°F (24°C) 3.5 in
September 67°F (20°C) 2.9 in
October 55°F (13°C) 2.8 in
November 42°F (6°C) 2.6 in
December 31°F (-1°C) 2.1 in

Rome has a seasonal temperature swing of 50°F / from 26°F in January to 76°F in July. Total annual precipitation is 36.4 inches, with May being the wettest month (5.0") and February the driest (1.9").

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