Rockdale, IL
Full City Profile · Illinois · Kendall County County
2.5
/5.0
C+
Fair
2,598
Population
1,843/sq mi density
$56,799
Median Income
$26,405 per capita
$183,500
Home Value
$222,082 Zillow
$1,219
Median Rent
32.8% income on rent
50°F
Avg Temperature
204
Violent Crime/100K
51 property/100K
C+
Overall
2.5 / 5.0
Fair overall score based on economy, affordability, safety and education
C
Economy
2.2 / 5.0
$56,799 median income, 8.4% unemployment
A+
Affordability
4.9 / 5.0
$183,500 home value, $1,219/mo rent
F
Safety
1.0 / 5.0
204 violent crimes/100K
D
Education
2.0 / 5.0
12.1% bachelor's degree or higher
Rockdale experiences four distinct seasons with an average annual temperature of 50°F (10°C). Winters average 24°F in January while summers reach 74°F in July. Annual precipitation totals 38.0 inches. The area receives 16.9 inches of snow annually.
Temperature
24°F Jan (-5°C)
74°F Jul (23°C)
| Annual Average | 50.4°F |
| 7% below US avg | |
| January Average | 24°F (-5°C) |
| July Average | 74°F (23°C) |
Geography
| Elevation | 575 ft (175 m) |
| Area | 1.4 sq mi (3.7 km²) |
| Population Density | 1,843/sq mi |
| Coordinates | 41.5049°N, 88.1248°W |
| Timezone | America/Chicago |
| County | Kendall County County |
| Nearest Airport | Joliet Regional (JOT) 3 miles away |
Precipitation & Snow
Air Quality
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 80.3 / 100 |
| Social Vulnerability | 10.6 / 100 |
| Community Resilience | 96.0 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Very Low |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively Low |
| Ice Storm | Relatively Low |
| Drought | Relatively Low |
| Cold Wave | Relatively High |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Tsunami History
1 tsunami recorded within 500 km. Highest wave on record: 3.0 m (10 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1954 | MICHIGAN CITY, IN (LAKE MICHIGAN) | Avalanche | 3.0 m | 7 | 106 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 24°F (-5°C) | 2.0 in | Coldest |
| February | 28°F (-2°C) | 1.8 in | Driest |
| March | 38°F (3°C) | 2.3 in | |
| April | 49°F (10°C) | 3.9 in | |
| May | 60°F (16°C) | 4.5 in | |
| June | 70°F (21°C) | 4.3 in | |
| July | 74°F (23°C) | 4.6 in | Warmest, Wettest |
| August | 72°F (22°C) | 4.0 in | |
| September | 66°F (19°C) | 3.2 in | |
| October | 53°F (12°C) | 3.1 in | |
| November | 40°F (5°C) | 2.5 in | |
| December | 29°F (-1°C) | 1.9 in |
Rockdale has a seasonal temperature swing of 50°F / from 24°F in January to 74°F in July. Total annual precipitation is 38.0 inches, with July being the wettest month (4.6") and February the driest (1.8").