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Irwin, IL
Full City Profile · Illinois · Kankakee County County
3.4
/5.0
B
Good
60
Population
1,200/sq mi density
$87,083
Median Income
$42,092 per capita
$144,600
Home Value
$198,049 Zillow
$1,125
Median Rent
17.5% income on rent
51°F
Avg Temperature
275 sunny days/yr
64
Violent Crime/100K
700 property/100K
B
Overall
3.4 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.7 / 5.0
$87,083 median income, 0.0% unemployment
A+
Affordability
5.0 / 5.0
$144,600 home value, $1,125/mo rent
F
Safety
1.0 / 5.0
64 violent crimes/100K
B
Education
3.0 / 5.0
25.6% bachelor's degree or higher
Irwin experiences four distinct seasons with an average annual temperature of 51°F (11°C). Winters average 24°F in January while summers reach 75°F in July. The area gets 275 sunny days per year. Annual precipitation totals 41.7 inches. The area receives 20.7 inches of snow annually. Air quality is rated Good with a median AQI of 43.
Temperature
24°F Jan (-4°C)
75°F Jul (24°C)
| Annual Average | 51.2°F |
| 5% below US avg | |
| January Average | 24°F (-4°C) |
| July Average | 75°F (24°C) |
| Sunny Days | 275 days/yr |
Geography
| Elevation | 657 ft (200 m) |
| Area | 0.0 sq mi (0.1 km²) |
| Population Density | 1,200/sq mi |
| Coordinates | 41.0531°N, 87.9839°W |
| Timezone | America/Chicago |
| County | Kankakee County County |
| Nearest Airport | Joliet Regional (JOT) 34 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 88.2 / 100 |
| Social Vulnerability | 50.0 / 100 |
| Community Resilience | 83.7 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Relatively Low |
| Strong Wind | Relatively Moderate |
| 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 | 117 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 24°F (-4°C) | 1.5 in | Coldest |
| February | 27°F (-3°C) | 1.5 in | Driest |
| March | 38°F (3°C) | 2.9 in | |
| April | 49°F (10°C) | 3.9 in | |
| May | 61°F (16°C) | 4.1 in | |
| June | 70°F (21°C) | 4.1 in | Wettest |
| July | 75°F (24°C) | 3.9 in | Warmest |
| August | 72°F (22°C) | 3.5 in | |
| September | 65°F (18°C) | 3.6 in | |
| October | 53°F (12°C) | 2.8 in | |
| November | 40°F (5°C) | 3.1 in | |
| December | 28°F (-2°C) | 2.6 in |
Irwin has a seasonal temperature swing of 50°F / from 24°F in January to 75°F in July. Total annual precipitation is 37.5 inches, with June being the wettest month (4.1") and February the driest (1.5").