Joliet, IL
Full City Profile · Illinois · Kendall County County
3.3
/5.0
B
Good
149,785
Population
2,260/sq mi density
$88,026
Median Income
$35,820 per capita
$248,600
Home Value
$269,608 Zillow
$1,237
Median Rent
30.5% income on rent
50°F
Avg Temperature
352
Violent Crime/100K
1,259 property/100K
B
Overall
3.3 / 5.0
Good overall score based on economy, affordability, safety and education
A
Economy
4.0 / 5.0
$88,026 median income, 5.8% unemployment
A+
Affordability
5.0 / 5.0
$248,600 home value, $1,237/mo rent
F
Safety
1.0 / 5.0
352 violent crimes/100K
B
Education
3.0 / 5.0
25.0% bachelor's degree or higher
Joliet 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 | 617 ft (188 m) |
| Area | 62.8 sq mi (162.6 km²) |
| Population Density | 2,260/sq mi |
| Coordinates | 41.5177°N, 88.1488°W |
| Timezone | America/Chicago |
| County | Kendall County County |
| Nearest Airport | Joliet Regional (JOT) 1 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 | 107 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 |
Joliet 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").