Weather & Climate in Oakdale, IL

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

Oakdale experiences four distinct seasons with an average annual temperature of 55°F (13°C). Winters average 31°F in January while summers reach 77°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 45.6 inches. The area receives 10.6 inches of snow annually. Air quality is rated Good with a median AQI of 43. The city sits at an elevation of 519 feet.

Temperature

31°F Jan (-1°C) 77°F Jul (25°C)

Annual Average	55.1°F
	2% above US avg
January Average	31°F (-1°C)
July Average	77°F (25°C)
Sunny Days	293 days/yr

Geography

Elevation	519 ft (158 m)
Area	0.6 sq mi (1.6 km²)
Population Density	179/sq mi
Coordinates	38.2648°N, 89.5035°W
Timezone	America/Chicago
County	Washington County County
Nearest Airport	St Louis Regional (ALN) 52 miles away

Precipitation & Snow

Annual Rainfall 45.6"

20% above US avg

Snowfall 10.6"

Wettest Month (May) 4.29"

Driest Month (Jan) 2.17"

Air Quality

AQI Median	43.0
Rating	Good

Natural Hazard Risk

Overall Risk	Relatively Low
Risk Score	55.2 / 100
Social Vulnerability	42.1 / 100
Community Resilience	98.5 / 100

Hazard Breakdown

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

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

Earthquake History

93 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.2.

Apr 18, 2008	7 km NNE of Bellmont, Illinois	M5.2	143 km	14 km
Sep 26, 1990	4 km SE of Chaffee, Missouri	M4.8	124 km	1 km
Apr 18, 2008	9 km NNE of Bellmont, Illinois	M4.7	144 km	15 km
Feb 5, 1994	2 km WNW of Dongola, Illinois	M4.2	104 km	16 km
Apr 21, 2008	7 km NNE of Bellmont, Illinois	M4.0	143 km	18 km
Jun 7, 2011	18 km NNW of Potosi, Missouri	M3.9	124 km	21 km
Sep 19, 2017	4 km N of Bellmont, Illinois	M3.8	140 km	12 km
Apr 25, 2008	8 km NNE of Bellmont, Illinois	M3.7	144 km	13 km
Nov 20, 2012	7 km N of Bellmont, Illinois	M3.6	141 km	19 km
Jan 2, 2006	3 km NNE of Eldorado, Illinois	M3.6	106 km	7 km
May 1, 2016	5 km SE of New Grand Chain, Illinois	M3.5	125 km	16 km
Jun 5, 2008	8 km WNW of Mount Carmel, Illinois	M3.4	146 km	16 km
May 30, 2015	4 km ENE of Geff, Illinois	M3.4	102 km	26 km
Mar 2, 1990	9 km NW of Vernon, Illinois	M3.4	71 km	0 km
Aug 27, 1993	5 km SSE of Olympian Village, Missouri	M3.3	84 km	22 km
May 1, 2008	8 km NNE of Bellmont, Illinois	M3.3	145 km	14 km
May 2, 2003	10 km ENE of Thompsonville, Illinois	M3.2	81 km	0 km
Dec 27, 1992	2 km E of Pocahontas, Missouri	M3.2	86 km	10 km
Apr 6, 1994	2 km NE of Tamaroa, Illinois	M3.2	28 km	15 km
Oct 24, 1990	5 km ENE of Woodlawn, Illinois	M3.2	47 km	1 km

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

Tornado History

609 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF5. Total: 65 fatalities, 1,074 injuries.

Date	Rating	Distance	Path	Fatalities
Dec 18, 1957	EF5	30 km	5.4 mi	1
Feb 28, 2017	EF4	75 km	53.5 mi	1
Nov 17, 2013	EF4	18 km	10.6 mi	2
Feb 29, 2012	EF4	98 km	26.1 mi	8
Sep 22, 2006	EF4	71 km	27.5 mi	0
Jun 2, 1990	EF4	90 km	106.0 mi	1
Jun 2, 1990	EF4	96 km	23.0 mi	0
May 29, 1982	EF4	61 km	17.0 mi	10
Apr 3, 1981	EF4	74 km	11.9 mi	0
Feb 10, 1959	EF4	100 km	23.9 mi	21
Dec 18, 1957	EF4	63 km	28.3 mi	11
Dec 18, 1957	EF4	37 km	16.8 mi	1
May 26, 2024	EF3	87 km	4.9 mi	0
Dec 10, 2021	EF3	73 km	4.2 mi	6
May 31, 2013	EF3	82 km	10.6 mi	0
Dec 31, 2010	EF3	88 km	6.7 mi	1
Mar 11, 2006	EF3	74 km	5.1 mi	0
Mar 11, 2006	EF3	66 km	53.5 mi	2
May 6, 2003	EF3	100 km	2.0 mi	0
Apr 21, 2002	EF3	68 km	31.5 mi	1

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

Wildfire History

15 wildfires (100+ acres) recorded within 100 km. Largest: RED SHALE UNIT RX (2,123 acres, 2021).

Year	Name	Acres Burned	Distance
2021	RED SHALE UNIT RX	2,123	75 km
2014	UNNAMED	1,627	97 km
2019	ATWOOD RIDGE RX	1,622	97 km
2024	RED SHALE RX	1,259	76 km
2019	KINKAID RX	1,215	51 km
2022	KINKAID STATE FISH AND WILDLIFE AREA RX	1,115	51 km
2021	STATE OF ILLINOIS TRACT RX	1,011	45 km
2021	MILL CREEK RX	898	76 km
2024	HAMPTON NORTH RX	807	73 km
2018	UNNAMED	729	50 km
2024	HERRIN FLATS RX	713	76 km
2020	UNNAMED	687	50 km
2024	HAMPTON RX	628	74 km
2022	BLOWDOWN 16 RX	553	54 km
2019	PINE HILLS RX	542	82 km

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

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	31°F (-1°C)	2.2 in	Coldest, Driest
February	34°F (1°C)	2.5 in
March	45°F (7°C)	3.9 in
April	55°F (13°C)	3.9 in
May	65°F (18°C)	4.3 in	Wettest
June	74°F (23°C)	3.8 in
July	77°F (25°C)	3.9 in	Warmest
August	76°F (24°C)	3.2 in
September	69°F (21°C)	3.2 in
October	58°F (14°C)	3.0 in
November	46°F (8°C)	3.7 in
December	35°F (2°C)	3.2 in

Oakdale has a seasonal temperature swing of 46°F / from 31°F in January to 77°F in July. Total annual precipitation is 40.8 inches, with May being the wettest month (4.3") and January the driest (2.2").

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