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 51°F (10°C). Winters average 24°F in January while summers reach 74°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 38.8 inches. The area receives 20.3 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 488 feet.

Temperature

24°F Jan (-5°C) 74°F Jul (24°C)

Annual Average	50.8°F
	6% below US avg
January Average	24°F (-5°C)
July Average	74°F (24°C)
Sunny Days	275 days/yr

Geography

Elevation	488 ft (149 m)
Area	1.9 sq mi (5.0 km²)
Population Density	848/sq mi
Coordinates	40.8774°N, 89.5132°W
Timezone	America/Chicago
County	Peoria County County
Nearest Airport	General Downing - Peoria International (PIA) 17 miles away

Precipitation & Snow

Annual Rainfall 38.8"

2% above US avg

Snowfall 20.3"

Wettest Month (Jun) 4.06"

Driest Month (Feb) 1.38"

Air Quality

AQI Median	43.0
Rating	Good

Natural Hazard Risk

Overall Risk	Relatively Moderate
Risk Score	90.7 / 100
Social Vulnerability	50.0 / 100
Community Resilience	93.6 / 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	24°F (-5°C)	1.5 in	Coldest
February	27°F (-3°C)	1.4 in	Driest
March	39°F (4°C)	2.9 in
April	51°F (10°C)	3.8 in
May	62°F (16°C)	4.0 in
June	71°F (22°C)	4.1 in	Wettest
July	74°F (24°C)	3.9 in	Warmest
August	73°F (23°C)	3.5 in
September	65°F (19°C)	3.9 in
October	54°F (12°C)	2.8 in
November	40°F (5°C)	2.8 in
December	28°F (-2°C)	2.3 in

Rome has a seasonal temperature swing of 51°F / from 24°F in January to 74°F in July. Total annual precipitation is 36.8 inches, with June being the wettest month (4.1") and February the driest (1.4").

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