Weather & Climate in Ruma, IL

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

Ruma enjoys a temperate climate with an average annual temperature of 56°F (13°C). Winters average 32°F in January while summers reach 78°F in July. The area gets 293 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 43.6 inches. The area receives 9.2 inches of snow annually. Air quality is rated Good with a median AQI of 43. The city sits at an elevation of 460 feet.

Temperature

32°F Jan (-0°C) 78°F Jul (25°C)

Annual Average	55.7°F
	3% above US avg
January Average	32°F (-0°C)
July Average	78°F (25°C)
Sunny Days	293 days/yr

Geography

Elevation	460 ft (140 m)
Area	0.3 sq mi (0.8 km²)
Population Density	592/sq mi
Coordinates	38.1306°N, 90.0003°W
Timezone	America/Chicago
County	Monroe County County
Nearest Airport	Farmington Regional (FAM) 32 miles away

Precipitation & Snow

Annual Rainfall 43.6"

15% above US avg

Snowfall 9.2"

Wettest Month (May) 4.17"

Driest Month (Jan) 2.09"

Air Quality

AQI Median	43.0
Rating	Good

Natural Hazard Risk

Overall Risk	Very Low
Risk Score	41.9 / 100
Social Vulnerability	10.6 / 100
Community Resilience	94.9 / 100

Hazard Breakdown

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

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

Earthquake History

78 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.8.

Sep 26, 1990	4 km SE of Chaffee, Missouri	M4.8	114 km	1 km
Feb 5, 1994	2 km WNW of Dongola, Illinois	M4.2	111 km	16 km
Feb 21, 2012	4 km SSE of Bertrand, Missouri	M3.9	149 km	8 km
Jun 7, 2011	18 km NNW of Potosi, Missouri	M3.9	79 km	21 km
Jan 2, 2006	3 km NNE of Eldorado, Illinois	M3.6	142 km	7 km
May 1, 2016	5 km SE of New Grand Chain, Illinois	M3.5	135 km	16 km
Mar 2, 1990	9 km NW of Vernon, Illinois	M3.4	108 km	0 km
May 30, 2015	4 km ENE of Geff, Illinois	M3.4	148 km	26 km
Aug 27, 1993	5 km SSE of Olympian Village, Missouri	M3.3	39 km	22 km
Oct 24, 1990	5 km ENE of Woodlawn, Illinois	M3.2	93 km	1 km
Apr 6, 1994	2 km NE of Tamaroa, Illinois	M3.2	69 km	15 km
Jan 29, 1993	7 km WNW of Brownstown, Illinois	M3.2	131 km	5 km
Dec 27, 1992	2 km E of Pocahontas, Missouri	M3.2	78 km	10 km
May 2, 2003	10 km ENE of Thompsonville, Illinois	M3.2	119 km	0 km
Jul 1, 2017	9 km SSE of Mulberry Grove, Illinois	M3.1	105 km	17 km
Jan 23, 1991	3 km WSW of Logan, Illinois	M3.1	101 km	1 km
Mar 12, 2002	6 km S of Marble Hill, Missouri	M3.1	98 km	10 km
Feb 28, 1994	5 km NW of Harrison, Illinois	M3.0	64 km	5 km
Mar 1, 2006	2 km N of Buncombe, Illinois	M3.0	114 km	6 km
Jun 27, 2005	6 km E of Grand Tower, Illinois	M3.0	75 km	10 km

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

Tornado History

629 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF5. Total: 105 fatalities, 1,650 injuries.

Date	Rating	Distance	Path	Fatalities
Dec 18, 1957	EF5	66 km	5.4 mi	1
Feb 28, 2017	EF4	45 km	53.5 mi	1
Nov 17, 2013	EF4	58 km	10.6 mi	2
Apr 22, 2011	EF4	80 km	21.3 mi	0
Sep 22, 2006	EF4	52 km	27.5 mi	0
May 29, 1982	EF4	85 km	17.0 mi	10
Apr 3, 1981	EF4	67 km	11.9 mi	0
Jun 22, 1969	EF4	98 km	20.2 mi	2
Jun 22, 1969	EF4	66 km	15.1 mi	4
Jan 24, 1967	EF4	78 km	25.0 mi	3
Feb 10, 1959	EF4	69 km	23.9 mi	21
Dec 18, 1957	EF4	82 km	16.8 mi	1
Dec 18, 1957	EF4	66 km	28.3 mi	11
Feb 24, 1956	EF4	88 km	77.6 mi	6
Dec 10, 2021	EF3	95 km	24.8 mi	1
Dec 10, 2021	EF3	70 km	4.2 mi	6
Oct 24, 2021	EF3	74 km	18.8 mi	0
Oct 24, 2021	EF3	59 km	16.7 mi	0
May 31, 2013	EF3	90 km	31.7 mi	0
May 31, 2013	EF3	76 km	10.6 mi	0

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

Wildfire History

20 wildfires (100+ acres) recorded within 100 km. Largest: SMITH MILL HOLLOW (3,978 acres, 2022).

Year	Name	Acres Burned	Distance
2022	SMITH MILL HOLLOW	3,978	90 km
2021	COUNCIL BLUFF	3,035	94 km
2024	COUNCIL BLUFF WEST RX	2,846	94 km
2005	UNNAMED	2,751	93 km
2019	UNNAMED	2,688	94 km
2010	COUNCIL BLUFF LAKE	2,651	95 km
2006	UNNAMED	2,512	95 km
2021	RED SHALE UNIT RX	2,123	95 km
2021	BEAR PAW	2,080	97 km
2024	BEAR PAW RX	2,067	97 km
2004	CICERO CREEK	1,846	89 km
2021	BERRYMAN BLOCK B AND C	1,728	96 km
2014	UNNAMED	1,627	100 km
2019	ATWOOD RIDGE RX	1,622	100 km
2015	UNNAMED	1,586	93 km
2010	DELBRIDGE SOUTH	1,574	93 km
2000	UNNAMED	1,552	77 km
1999	UNNAMED	1,483	77 km
2024	HARMON SPRING RX	1,330	95 km
2018	UNNAMED	1,285	95 km

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	32°F (-0°C)	2.1 in	Coldest, Driest
February	35°F (2°C)	2.4 in
March	45°F (7°C)	3.9 in
April	56°F (13°C)	3.7 in
May	65°F (18°C)	4.2 in	Wettest
June	74°F (23°C)	3.5 in
July	78°F (25°C)	3.9 in	Warmest
August	76°F (25°C)	3.5 in
September	69°F (21°C)	3.5 in
October	58°F (14°C)	3.0 in
November	46°F (8°C)	3.8 in
December	35°F (2°C)	3.4 in

Ruma has a seasonal temperature swing of 46°F / from 32°F in January to 78°F in July. Total annual precipitation is 40.8 inches, with May being the wettest month (4.2") and January the driest (2.1").

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