All Countries
Centralia, IL
Full City Profile · Illinois · Clinton County County
2.8
/5.0
C+
Fair
12,009
Population
1,465/sq mi density
$47,308
Median Income
$28,698 per capita
$81,600
Home Value
$107,115 Zillow
$775
Median Rent
31.2% income on rent
56°F
Avg Temperature
293 sunny days/yr
1,473
Violent Crime/100K
4,639 property/100K
C+
Overall
2.8 / 5.0
Fair overall score based on economy, affordability, safety and education
C+
Economy
2.9 / 5.0
$47,308 median income, 5.8% unemployment
A+
Affordability
5.0 / 5.0
$81,600 home value, $775/mo rent
F
Safety
1.0 / 5.0
1,473 violent crimes/100K (288% above avg)
C
Education
2.4 / 5.0
17.8% bachelor's degree or higher
Centralia enjoys a temperate climate with an average annual temperature of 56°F (13°C). Winters average 30°F in January while summers reach 78°F in July. The area gets 293 sunny days per year. Annual precipitation totals 45.9 inches. Air quality is rated Good with a median AQI of 43.
Temperature
30°F Jan (-1°C)
78°F Jul (26°C)
| Annual Average | 55.7°F |
| 3% above US avg | |
| January Average | 30°F (-1°C) |
| July Average | 78°F (26°C) |
| Sunny Days | 293 days/yr |
Geography
| Elevation | 505 ft (154 m) |
| Area | 8.2 sq mi (21.2 km²) |
| Population Density | 1,465/sq mi |
| Coordinates | 38.5221°N, 89.1235°W |
| Timezone | America/Chicago |
| County | Clinton County County |
| Nearest Airport | St Louis Regional (ALN) 56 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 65.6 / 100 |
| Social Vulnerability | 27.6 / 100 |
| Community Resilience | 88.8 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Very Low |
| Earthquake | Relatively Moderate |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Relatively Low |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively Low |
| Ice Storm | Very Low |
| Drought | Relatively Low |
| Cold Wave | Relatively Moderate |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 30°F (-1°C) | 2.0 in | Coldest, Driest |
| February | 33°F (1°C) | 2.4 in | |
| March | 44°F (7°C) | 4.1 in | |
| April | 55°F (13°C) | 3.9 in | |
| May | 65°F (18°C) | 4.3 in | Wettest |
| June | 74°F (23°C) | 3.9 in | |
| July | 78°F (26°C) | 3.9 in | Warmest |
| August | 76°F (24°C) | 3.0 in | |
| September | 69°F (20°C) | 3.1 in | |
| October | 57°F (14°C) | 3.0 in | |
| November | 45°F (7°C) | 3.7 in | |
| December | 34°F (1°C) | 3.5 in |
Centralia has a seasonal temperature swing of 48°F / from 30°F in January to 78°F in July. Total annual precipitation is 40.8 inches, with May being the wettest month (4.3") and January the driest (2.0").